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assembly  clutch  device  direction  driving  engagement  force  friction  includes  member  piston  portion  pressure  shaft 
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Vehicle driving apparatus

Tue, 22 Sep 2015 08:00:00 EDT

A vehicle driving apparatus includes a rotating electrical machine and an engagement device, which are disposed on a power transmission path linking an input member drive-coupled to an internal combustion engine and an output member drive-coupled to a wheel. The engagement device includes an engagement input coupled to the input member, an engagement output that forms a pair with the engagement input and is coupled to the rotating electrical machine, a friction member disposed between the engagement input and the engagement output, and a pressing member that presses the friction member in a pressing direction. An oil pressure chamber is formed between the pressing member and either the engagement input or the engagement output. A biasing spring biases the pressing member in the pressing direction when no oil pressure is supplied to the oil pressure chamber and is disposed on an exterior of the oil pressure chamber.



Brake assist function

Tue, 26 May 2015 08:00:00 EDT

A method of controlling a vehicle having a transmission system, an engine system, and a braking system includes detecting a braking condition of the braking system. The braking condition is at least one of a brake temperature being above a predetermined brake temperature limit and a braking load being above a predetermined braking load limit. The method also includes detecting a second condition of at least one of the transmission system and the engine system. The method also includes determining whether the second condition satisfies predetermined criteria. Furthermore, the method includes detecting an absolute vehicle acceleration that is below a predetermined acceleration limit. Moreover, the method includes downshifting from a current gear to a lower gear to thereby cause engine braking when the braking condition is satisfied, the second condition satisfies the predetermined criteria, and the absolute vehicle acceleration is below the predetermined acceleration limit.



Clutch backing plate for bearing support

Tue, 26 May 2015 08:00:00 EDT

A clutch assembly includes a first set of clutch plates and a second set of clutch plates interweaved with the first set of clutch plates. The second set of clutch plates is coupled to a rotatable inner hub, and a stationary backing plate is mounted about the inner hub. The first set of clutch plates is coupled to the backing plate such that the first set of clutch plates and the second set of clutch plates are compressed together with one of the first set or the second set of clutch plates abutting against the backing plate when the clutch assembly is engaged. The clutch assembly further includes a connecting hub coupled to the inner hub, such that the connecting hub supports the stationary backing plate with a bearing disposed between the connecting hub and the backing plate.



Clutch with pressure sustaining system

Tue, 26 May 2015 08:00:00 EDT

An assembly includes an output shaft, an input shaft with an internal reservoir, and a clutch. The clutch is adapted to selectively engage and couple the input shaft to the output shaft. The clutch has a pressure chamber that communicates with the reservoir of the input shaft. The reservoir has a sufficient volume to provide the pressure chamber with a fluid pressure adequate to maintain engagement of the clutch during an interruption of a fluid supply to the input shaft and clutch.



Clutch assembly

Tue, 26 May 2015 08:00:00 EDT

The invention relates to a clutch assembly (8) for providing selective engagement with a rotatable shaft, in particular for selecting between manual and powered driving of an output drive such as a door, shutter or gate. The clutch assembly (8) comprises a stop (16) arranged to rotate with the shaft (18), a cam (20) arranged to move relative to the shaft (18), and a follower (24) arranged to rotate around the shaft (18) and axially movable along the shaft in and out of engagement with the stop (16). The follower (24) is operatively associated with the cam (20) so that movement of the follower relative to the cam brings the follower into engagement with the stop (16) by axial movement, so causing rotation of the shaft (18).



Driven component with clutch for selective operation of component

Tue, 26 May 2015 08:00:00 EDT

A component, such as an engine accessory for an automotive engine, that has clutch with a helical clutch coil and an axially movable armature. The helical clutch coil is normally engaged so as to transmit rotary power between a driving member and a driven member. The armature can be moved to apply a force to a tang of the helical clutch coil that causes the helical clutch coil to disengage to an extent where full rotary power is not passed through the clutch to drive the component.



Shaft connection structure and shaft connection method

Tue, 26 May 2015 08:00:00 EDT

A shaft connection structure connects a pair of rotating shafts by a fit between a pair of spline shafts, wherein the pair of rotating shafts are provided with corresponding ones of the pair of spline shafts. The shaft connection structure includes a shaft connection assist device. The shaft connection assist device includes a centering ring and centering pins. The centering ring is arranged outside of a first one of the spline shafts and coaxially with the first spline shaft. The centering pins are provided outside of a second one of the spline shafts. The centering pins engage with an outer peripheral surface of the centering ring and bring a shaft axis of the first spline shaft and a shaft axis of the second spline shaft into a range enabling the fit therebetween.



Switchable coupling

Tue, 26 May 2015 08:00:00 EDT

A switchable coupling with a coupling system between a driving element and an output element is provided. The switchable coupling includes an actuator, an elastic actuating element and a switching element movable between starting, central and end positions. In the central position the switchable coupling has a different state (open or closed) than in the starting position. The switchable coupling further includes a bolt constrained between first and second bolt stops. Axial movement of the switching element causes operative surfaces connected to the switching element or the bolt to engage with elements on other of the switching element and the bolt, such that the bolt rotates relative to the switching element. The bolt alternately moves relative to the switching element into a first relative position blocking switching element movement in the central position, and into a second relative position permitting movement of the switching element toward the starting position.



Elevator and arrangement for emergency stopping an elevator car

Tue, 26 May 2015 08:00:00 EDT

An elevator may include an elevator car, a set of hoisting ropes, a hoisting machine, a traction sheave, and a brake. The elevator car may be suspended on the hoisting ropes. The hoisting machine may drive the traction sheave to move the elevator car using the hoisting ropes. The brake may include a brake wheel and brake shoes. The brake may exert an effect on rotation of the traction sheave. During braking, the effect of the brake on the rotation of the traction sheave may depend on a direction of rotation of the traction sheave. The effect of the brake on the rotation of the traction sheave may be greater when the direction of rotation of the traction sheave during braking corresponds to the elevator car moving downward than when the direction of rotation of the traction sheave during braking corresponds to the elevator car moving upward.



Automatic shift device for automated transmission for vehicle

Tue, 26 May 2015 08:00:00 EDT

An automatic shift device for an automated transmission for a vehicle includes a rotation shaft, a clutch ring, a clutch hub, a sleeve, a dog clutch portion, a shaft moving apparatus, and a control portion. The control portion includes a push force reduction control portion performing a push force reduction control reducing a push force of the sleeve that the shaft moving apparatus applies on the clutch rear teeth in response to a back and forth movement of the sleeve after the sleeve reaches an end surface of the clutch rear tooth. The control portion includes a retry control portion performing a retry control that re-applies the push force of the sleeve in response to a predetermined retry condition after the push force reduction control is performed.



Motor drive assembly for a vehicle and a motor vehicle

Tue, 19 May 2015 08:00:00 EDT

A motor drive assembly can prevent a two-way roller clutch of the current speed ratio and a two-way roller clutch of the next speed ratio from engaging simultaneously, and includes a first-speed friction plate formed with engaging protrusions on the first-speed side, and a shift ring formed with engaging recesses. While the shift ring is in a first-speed shift position SP1f, the engaging protrusions are adapted to be engaged in the engaging recesses, thereby preventing rotation of the shift ring relative to the first-speed friction plate. The shift ring is provided with projections on its inner periphery. The drive assembly further includes an annular protrusion formed with cutouts. When the projections are axially and circumferentially displaced from the respective cutouts, the projections are adapted to interfere with the annular protrusion, thereby preventing axial movement of the shift ring between the first-speed shift position SP1f and a second-speed shift position SP2f.



Friction ring

Tue, 19 May 2015 08:00:00 EDT

A friction ring (12) for reel shafts (10), having on its inner periphery a friction surface (22) for frictional engagement with the reel shaft (10), and on its outer periphery a plurality of radially projecting leaf springs (24) that are inclined relative to the radial direction in a uniform direction (D) of rotation, each leaf spring having a base portion (26) held in a slot (28) of the friction ring (12), wherein each leaf spring (24) is adapted to be bent back into a recess (30) of the friction ring (12) on the side facing forward in the direction (D) of rotation and is supported on a wall (32) of this recess on the opposite side.



Motorcycle including centrifugal clutch

Tue, 19 May 2015 08:00:00 EDT

A centrifugal clutch is disclosed. The centrifugal clutch has a first plate provided in a clutch housing, a second plate provided in a clutch boss, a pressure plate capable of being moved close to and away from the first and second plates, and a centrifugal weight arranged to push the pressure plate toward the first and second plates by receiving centrifugal force. The centrifugal clutch is arranged so that torque T transmitted between the first and second plates is temporarily reduced and then increased as an engine rotational speed is increased from a time when an engine is stopped.



Switchable bi-directional wedge clutch

Tue, 19 May 2015 08:00:00 EDT

A switchable clutch, including: a first clutch including a first outer race with first and second race plates; a second clutch including a second outer race with third and fourth race plates; an inner hub; and a selector system axially disposed between the first and second clutches, in contact with the first and second outer races, and including a selector plate. For a first operational mode, the selector plate rotates to a first circumferential position to non-rotatably connect the first outer race and the inner hub. For a second operational mode, the selector plate rotates to a second circumferential position to non-rotatably connect the second outer race and the inner hub. For a third operational mode: the selector plate rotates to a third circumferential position and the inner hub is rotatable with respect to the first and second outer races. The first and third plates are axially displaceable.



Method for operation of a braking system for a motor vehicle

Tue, 12 May 2015 08:00:00 EDT

Disclosed is a method for operating an electromechanically operable parking brake for motor vehicles with a driving engine furnished with a mechanical gear box, being substantially composed of an operating element, an electronic control unit, to which are sent wheel rotational speed values from wheel rotational speed sensors, at least one unit for generating a brake application force, and brake devices on at least one axle being lockable by the unit, with the electronic control unit actuating the unit after detection of a starting maneuver of the motor vehicle in the sense of a release operation of the parking brake. In order to render a release operation of the parking brake as comfortable as possible after detection of a starting maneuver of the motor vehicle, the method at issued arranges that the electronic control unit (6) actuates the unit (1) in order to reduce the brake application force to an inclination-responsive holding force when a starting maneuver is detected and before the release operation of the parking brake is performed.



Segment type friction material

Tue, 12 May 2015 08:00:00 EDT

A segment-type friction material comprises segment pieces each having a supply passage formed thereon to supply lubricating oil to a surface of each of the segment pieces. The segment-type friction material further comprises oil grooves each having an outer peripheral opening portion extended in a curved shape or a linear shape. Thereby, lubricating oil is sufficiently supplied to the surface of each of the segment pieces from an outer peripheral side thereof or an inner peripheral side thereof and a clearance between the segment-type friction material and its associated separator plate is assured. Moreover, a space for the lubricating oil to flow through an outer periphery is sufficiently assured and a drag torque is reduced.



Coupling system and method for a vehicle

Tue, 12 May 2015 08:00:00 EDT

A coupling system and method for a powered component on a vehicle includes a powered component, a rotating member mechanically driven by an engine on the vehicle and a radial coupling between the powered component and the rotating member for mechanically powering the powered component.



Torque transmission device

Tue, 12 May 2015 08:00:00 EDT

It is an object of the present invention to provide a compact torque transmission device. The torque transmission device includes an input-side member, an output-side member, a clutch and a pressing mechanism. The clutch is configured to transmit or cut torque between the input-side member and the output-side member. The pressing mechanism includes a pressing member for pressing the clutch, and a pressing device. The pressing device is a device for pressing the pressing member, and is disposed on the inner peripheral side of the clutch.



Driving device for belt axle of winch

Tue, 12 May 2015 08:00:00 EDT

The present invention discloses a driving device for a belt axle of a winch, which addresses the problems existing in conventional winches, for example the driving devices being out of work attributing to wearing of the unidirectional teeth on the fixed base and rotary body of the winch. The rotary cylinder of the driving device of the invention is provided with insertion holes into which a crow bar can be inserted. The fixed base is fixedly connected with the belt axle of the winch. The rotary cylinder is covered on the fixed base and fixed thereto in the axial direction. A unidirectional mechanism is located between the rotary cylinder and the belt axle to be engaged by unidirectional teeth. As the shift element and shift plates can be conveniently removed, the worn shift plates or shift element can be conveniently replaced after being used for a long period.



Starting device

Tue, 12 May 2015 08:00:00 EDT

A lockup clutch mechanism of a hydraulic transmission device includes a lockup piston that is capable of moving toward a front cover to press first and second friction plates, and a flange member that together with the lockup piston defines an engagement-side oil chamber. The front cover and the lockup piston define a first lubricant passage that supplies hydraulic oil to the first and second friction plates. A second lubricant passage communicating with the first lubricant passage is formed in a centerpiece of the front cover. A first shaft oil passage communicating with the engagement-side oil chamber and a second shaft oil passage communicating with the second lubricant passage are formed in an input shaft.



Machine tool, in particular handheld machine tool

Tue, 12 May 2015 08:00:00 EDT

A power tool, in particular a hand-held power tool, preferably embodied as a cordless screwdriver, is equipped with a torque limiting unit in which the release torque is settable by way of a locking brace that is equipped with a spring brace for locking elements that abut axially against parts of a planetary drive, in particular the ring gear thereof or the planet carrier thereof as a last gear stage, the spring elements of the spring brace and the locking elements being located with a radial offset from one another.



Synchronization device

Tue, 12 May 2015 08:00:00 EDT

A synchronization device for a transmission includes a sliding sleeve, a blocking synchronizer ring and a change wheel. In a force flow region between the blocking synchronizer ring and the change wheel, ramps for producing a servo force axial with respect to the shaft are provided on at least one component part.



Twin clutch controlling apparatus

Tue, 05 May 2015 08:00:00 EDT

A twin clutch controlling apparatus includes a clutch actuator for controlling a twin clutch TCL, and a manual operation clutch capacity arithmetic operation section for converting an operation amount of a clutch lever L into an electric signal to arithmetically operate a manual operation clutch capacity arithmetic operation value (tqc1tmt) corresponding to the manual operation. The twin clutch controlling apparatus is configured so as to accept a changeover from an Auto mode to a Temp mode in response to an operation of the clutch lever L. When an operation of the clutch lever L is detected during automatic control in the Auto mode, an event that the manual operation clutch capacity arithmetic operation value (tqc1tmt) comes to have a value similar to that of the clutch capacity (tqc1at) calculated in the Auto mode is included in conditions for a changeover to the Temp mode to occur.



Image forming apparatus

Tue, 05 May 2015 08:00:00 EDT

An image forming apparatus includes a housing; a driving portion provided in the housing and configured to generate a driving force; an interchangeable member interchangeably provided in the housing and having a driving-force-receiving portion at which the driving force is received, the interchangeable member being configured to rotate by receiving the driving force at the driving-force-receiving portion; a driving-force-transmitting portion provided in the housing and connecting the driving portion and the interchangeable member to each other, the driving-force-transmitting portion being configured to transmit the driving force from the driving portion to the interchangeable member; and a connecting-and-disconnecting mechanism that allows the driving force to be transmitted between the driving portion and the driving-force-transmitting portion when the interchangeable member rotates, and prevents the driving force from being transmitted between the driving portion and the driving-force-transmitting portion when the interchangeable member is to be attached to the housing.



Clutch assembly with a tab rivet connection and method thereof

Tue, 05 May 2015 08:00:00 EDT

A clutch assembly, including: a hub including a first radially disposed portion with a plurality of circumferentially aligned slots passing though the first radially disposed portion; and a ring gear carrier including a plurality of protrusions disposed in the plurality of circumferentially aligned slots and in compressive engagement with the hub to fixedly connect the hub to the carrier. Each slot in the plurality of circumferentially aligned slots extends further in a circumferential direction than in a radial direction. Each protrusion in the plurality of protrusions extends further in the circumferential direction than in the radial direction.



Bi-directional overrunning clutch having split roll cage and drag mechanism

Tue, 05 May 2015 08:00:00 EDT

A bi-directional overrunning clutch includes a housing and a pair of hubs substantially coaxially aligned within the housing. A pair of roll cages position a plurality of rollers between each hub and an inner cam surface of the housing. The rollers are positioned to wedge between the hub and the inner cam surface when one of the hub and the housing is rotated with respect to the other. End caps are attached to the housing adjacent to the hubs. A friction disk mechanism includes a friction plate rotating in combination with each the roll cage and a spring compressed between the end cap and the roll cage for biasing the friction member into frictional contact with the hub. An intermittent coupler is located between each roll cage and configured to engage the roll cages so as to permit indexing of one roll cage relative to the other.



System and method for actuating a mechanical diode clutch assembly

Tue, 05 May 2015 08:00:00 EDT

The present disclosure provides an actuation assembly for applying a mechanical diode clutch. The clutch includes an outer member, an inner member, and a strut. The actuation assembly includes a plate having an apply portion and a plurality of legs, where each of the plurality of legs has a first end coupled to the apply portion and a second end adapted to couple to a shift sleeve. A mechanism is coupled to the apply portion of the plate. The mechanism includes at least one biasing member. The plate is moveable between an unapply position and an apply position such that a movement from the unapply position to the apply position induces contact between the mechanism and the strut.



Recirculating ball screw assembly

Tue, 05 May 2015 08:00:00 EDT

Ball screws are described that may be incorporated into other devices such as a pulley assembly or a differential device. The ball screws include a threaded shaft defining a central longitudinal axis with a threaded nut threadedly coupled thereto to define at least one track in between them. Each track forms a continuous loop around an infield protrusion and is filled with a plurality of rolling elements filling. Each rolling element has the same radius from the central longitudinal axis such that the nut can rotate at higher speeds without the rolling elements locking up as a result of centripetal force.



Coupling assembly

Tue, 05 May 2015 08:00:00 EDT

A coupling arrangement for a drive train of a motor vehicle includes at least one clutch arranged on a rotating shaft in order to couple the rotating shaft selectively with a drive element of the drive train, and at least one activation device to activate the clutch. The activation device is adapted to bring an engagement segment selectively into engagement with a threaded segment rotating with the shaft in order to cause a relative movement of the engagement segment and the threaded segment along the axis of the rotating shaft and thus activate the clutch in the axial direction.



Hydraulic pressure control device

Tue, 05 May 2015 08:00:00 EDT

A hydraulic pressure control device including a pump driven to generate hydraulic pressure; a first pressure regulation valve that regulates hydraulic pressure in a first passage coupled to a pump along with discharge of oil; a second pressure regulation valve that receives the hydraulic pressure in the first passage and regulates the hydraulic pressure to an engagement pressure to engage a lock-up clutch according to a first signal pressure to output the engagement pressure to a second passage that supplies the oil to an engagement chamber; and a third pressure regulation valve that receives the hydraulic pressure in the first passage or the engagement pressure output to the second passage and regulates the received pressure according to the first signal pressure or a second signal pressure that synchronizes with the first signal pressure to output the resulting pressure to a third passage that supplies the oil to the disengagement chamber.



Housing member for clutch mechanism

Tue, 05 May 2015 08:00:00 EDT

A housing member for a friction clutch and a method for making it. The housing member is made for use with two differently sized fan members. Two annular raised mounting pilot surfaces are provided, one of which is machine finished for mounting one of the two fan members. Two sets of fan member mounting holes are also provided, one set of which is used to mount one of the two fan members thereon.



Wedge one-way clutch with gear thrust activation

Tue, 28 Apr 2015 08:00:00 EDT

A clutch assembly, including: a one-way clutch connected to first and second components and a helical gear engaged with the one way clutch. The helical gear is arranged to rotate in a rotational direction such that the helical gear displaces in an axial direction. The displacement of the helical gear in the axial direction and rotation of the helical gear in the rotational direction are arranged to rotationally lock the one-way clutch to non-rotatably connect the first and second components.



Lubrication structure of driving force transmission apparatus

Tue, 28 Apr 2015 08:00:00 EDT

A lubrication structure of a driving force transmission apparatus includes a rotating shaft, a friction engagement device, a piston member, a piston housing, a component, a piston chamber, a moving member, a holding member, a rotation stopper, and a hydraulic oil path. The rotating shaft has a shaft direction and is rotatable around the shaft direction. The friction engagement device includes a friction engagement unit which is arranged around an outer circumference of the rotating shaft and in which a plurality of friction materials are alternately laminated along the shaft direction. The piston member is provided movably along the shaft direction to press the friction engagement unit so that the plurality of friction materials engage with each other. The piston housing houses the piston member.



Two stage piston for faster clutch apply

Tue, 28 Apr 2015 08:00:00 EDT

A clutch assembly, including: a secondary piston assembly; a primary piston including a portion located radially outward of the secondary piston assembly; a first chamber at least partially formed by a first side of the primary piston; a second chamber at least partially formed by the secondary piston assembly and a second side of the primary piston; and a check valve connecting the first and second chambers. For a first force applied by fluid in the first chamber: the primary piston remains axially stationary; the fluid flows from the first chamber into the second chamber; and the secondary piston assembly displaces in a first axial direction to contact a clutch pack. For an increase of the first force to a second force: fluid flow between the first and second chambers is blocked by the check valve; and the primary piston and the secondary piston assembly displace in the first axial direction to close the clutch pack.



Connecting device for two shafts having a rebound cushion

Tue, 28 Apr 2015 08:00:00 EDT

A connecting device (1) for the rotationally fixed connection of first and second shafts (2, 3) that can rotate relative to one another. The connecting device (1) comprises an axially movable connecting element (5) designed such that, in a first axial position (A), the connecting element (5) forms an interlock between the first and second shafts (2, 3) and, in a second axial position (B), the connecting element (5) releases the interlock. The connecting device (1) also comprises an actuating system (6, 8, 9, 10, 11) for moving the connecting element between the first and second axial positions (A, B) and a stop (16) which limits the axial movement of the connecting element (5) in the first or second axial position (A, B). An impact damper (17) is provided for the stop (16) in order to reduce annoying noise when the connecting element (5) strikes against the stop (16).



Device for generating limit torque with function of yielding torque change in real time

Tue, 28 Apr 2015 08:00:00 EDT

A device for generating limit torque with a function of yielding a torque change in real time includes a spring, a rotating portion having a cam surface formed therein, a transmitting portion transmitting an elastic force of the spring to the cam surface, a fixed portion with respect to which the relative rotation of the rotating portion is generated, and a limit-torque control portion provided to the fixed portion so as to control limit torque of the rotating portion by adjusting the elastic force of the spring. In the device, the limit-torque control portion controls the limit torque of the spring by changing the elastic force of the spring in real time.



One way wedge clutch with reduced freewheel friction

Tue, 28 Apr 2015 08:00:00 EDT

A one-way clutch, including: a plurality of first ramps with respective first face surfaces orthogonal to an axis of rotation or forming a first acute angle with the first line. The clutch includes at least one wedge plate including a smooth second outer circumference and a first inner circumference with a plurality of second ramps with respective second face surfaces orthogonal to the axis of rotation in the radial direction or forming a second acute angle with the second line. The clutch includes an outer race including a second inner circumference. The outer race is rotatable with respect to the inner race in a circumferential direction. For relative rotation of the outer race in the direction, at least one, but not all, first face surfaces is in contact with second face surface. Rotation of the outer race in an opposite circumferential direction locks the inner and outer races.



Method for controlling a hydrodynamic retarder which can be disengaged mechanically via a separating clutch

Tue, 28 Apr 2015 08:00:00 EDT

There is provided a method for controlling a hydrodynamic retarder. The method includes determining a presence of a retarder switch-off request, and keeping a separating clutch closed, after the determining, for a preset time span and emptying a working chamber of the hydrodynamic retarder of a working medium by continuous actuation of a rotating bladed rotor and interruption of infeed of the working medium into the working chamber. The method further included varying the preset time span according to at least one of the following parameters or at least one parameter correlated with one of the following parameters: a rotational speed of the rotating bladed rotor, an output pressure, against which the working medium is emptied from the working chamber, a filling level of the working chamber with the working medium, a temperature of the working medium, and a braking torque of the hydrodynamic retarder.



Dog clutch control apparatus for automated transmission

Tue, 28 Apr 2015 08:00:00 EDT

A dog clutch control apparatus for an automated transmission includes a rotary shaft, a dog clutch transmission mechanism including a clutch ring, a clutch hub, a sleeve including a spline, an axial driving device, a dog clutch portion provided at the clutch ring, a rotation speed detection sensor, the spline including high teeth and a low tooth, clutch rear teeth and clutch front teeth formed at the dog clutch portion, and a control unit controlling an operation of the axial driving device based on a deceleration gradient of a rotation speed of either one of the sleeve and the clutch ring detected by the rotation speed detection sensor and controlling the axial driving device so that a decreased thrust load is applied to the clutch rear teeth from the sleeve in a case where the deceleration gradient is smaller than a first predetermined value.



Power transmission unit for an electromotively operated drive and magneto-rheological clutch

Tue, 28 Apr 2015 08:00:00 EDT

A power transmission unit includes a first input shaft and a second input shaft which can be mutually driven by a motor shaft in opposite directions. A driven shaft can be coupled, depending on the desired sense of rotation of the driven shaft, to the first or to the second input shaft, and can engage with a first output shaft and with a second output shaft. The first output shaft can be directly coupled with the first input shaft via a first magneto-rheological clutch, and the second output shaft can be directly coupled with the second input shaft via a second magneto-rheological clutch. A magneto-rheological clutch includes a coil powered by wireless energy transmission between a sender connected to a stationary housing and a receiver rotating with the coil.



Method and system for diagnosing the operating status of an assisted start-up mode for a motor vehicle

Tue, 21 Apr 2015 08:00:00 EDT

A method and system for diagnosing an operating status of an assisted start-up mode for a motor vehicle. The system includes a driving engine, a transmission including a mechanism determining a piece of engine rotation speed information, a piece of information on a position of an accelerator pedal of the vehicle, a piece of information on a position of a transmission, and a piece of information on torque transmitted to wheels, a detection mechanism producing a malfunction signal for the assisted start-up using the information received, a plurality of encoding mechanisms to produce a follow-up signal for each piece of calculated information received, and a memory saving the follow-up signals.



Transmission clutch assembly

Tue, 21 Apr 2015 08:00:00 EDT

A clutch assembly is disclosed that combines a positively engaging dog clutch and one way clutch. The two devices are design such that the one way clutch never interferes with the engagement or disengagement of the dog clutch. In one embodiment, the one way clutch transmits torque in particular rotational positions and the dog teeth are circumferentially placed such that they do not engage in any of these positions. In another embodiment, the dog clutch piston, to which the teeth are secured, is permitted to rotate enough to accommodate any interference between dog teeth during engagement. In either embodiment, the teeth faces that transmit torque in the same direction as the one way clutch may be angled such that torque in that direction tends to disengage the dog clutch.



Dual piston transmission clutch

Tue, 21 Apr 2015 08:00:00 EDT

A transmission assembly may include a first clutch and a second clutch. The second clutch may include a clutch pack, a pressure chamber, a first piston, and a second piston. The first piston may be configured to push against the clutch pack when pressurized fluid is directed into the pressure chamber. The second piston may be configured to push against the first piston when pressurized fluid is directed into the pressure chamber at a time when the first clutch is unactuated and inhibited from pushing against the first piston at a time when the first clutch is actuated.



Clutch release bearing device

Tue, 21 Apr 2015 08:00:00 EDT

The clutch release bearing device comprising a bearing 12 provided with a non-rotating ring 18, a rotating ring 20 and at least one row of rolling elements 22 arranged between the rings, and a wear ring 44 arranged on the rotating ring and capable of coming into contact with a clutch mechanism diaphragm, the wear ring 44 comprising at least one ball joint 84 bearing against a guide portion 42; 92 of the rotating ring and of which the axis 90 may be angularly tilted relative to the axis 14 of the bearing. The wear ring 44 is provided with a guide portion 80 comprising an internal surface in contact with an external bearing surface of the rotating ring, the ball joint 84 and joining portions 86; 94 capable of permitting angular tilting of the ball joint relative to the guide portion.



Pneumatic clutch with improved capacity and longevity

Tue, 21 Apr 2015 08:00:00 EDT

Pneumatic fan drive assembly with improved capacity, longevity and heat control. The output member is positioned radially internally of the output member. The friction mechanism has longer movement (moment) arms and torque. The friction engagement has an increased friction surface arm. A portion of the heat generated by the friction mechanism is evacuated to the atmosphere rather than being completely internalized in the assembly. The friction material for the friction lining alternatively can be formed of a plasma spray.



Dog clutch for automated transmission

Tue, 21 Apr 2015 08:00:00 EDT

A dog clutch for an automated transmission includes a rotary shaft rotatably connecting to one of an input shaft and an output shaft of the automated transmission, a clutch ring rotatably supported by the rotary shaft and rotatably connecting to the other of the input shaft and the output shaft, a clutch hub fixed to the rotary shaft, a sleeve including first teeth and second teeth, an axial driving device moving the sleeve, and a dog clutch portion arranged at the clutch ring, the dog clutch portion including: clutch forward teeth each having an engagement portion contactable with each of the first teeth, and inclined surfaces extending from the engagement portion toward both sides in a circumferential direction and inclined toward a rear end position of the dog clutch portion; and a clutch rearward tooth portion engageable with the second teeth and including clutch rearward teeth.



Wheel disconnect system

Tue, 21 Apr 2015 08:00:00 EDT

An integrated wheel disconnect system is provided, including, a mechanically actuated engagement interlock selector assembly. The engagement interlock selector assembly including a housing, an interlock mechanism disposed in the housing, a spring disposed in the housing, and an actuator assembly, arranged to displace the interlock mechanism towards or away from the spring. The engagement interlock selector assembly is operated by an actuator module, such as a pin, sliding along an external ramp on the interlock mechanism, the mechanism moving axially to selectively engage and disengage the wheel hub from the drive axle.



Dual clutch for a dual clutch transmission

Tue, 21 Apr 2015 08:00:00 EDT

The invention relates to a dual clutch for a dual clutch transmission for transmitting a torque from a drive shaft to at least one drive shaft, which comprises a first clutch, a second clutch, and an electrical actuating device. The actuating device comprises a coupling slide, wherein a first slide of the coupling slide acts on the first clutch, and a second slide of the coupling slide acts on the second clutch, and the two slides are movable in such a way that by displacing the slides a recoupling process is controlled.



Ratchet drive for a ratchet wrench

Tue, 21 Apr 2015 08:00:00 EDT

A powered ratchet drive for a ratchet wrench includes a pair of elongate pawls for driving an output member of the wrench. Each pawl may have a lower portion pivotally attached to a rocker and an upper portion comprising teeth for engagement with teeth of the output member to turn the output member. The upper portion of the pawl extends outward at an angle with respect to the lower portion. The ratchet may include a compression spring secured inside a cavity of each pawl for biasing the pawl into engagement with the output member. The ratchet also includes a reversing switch mechanism for selectively configuring the ratchet in a forward-driving configuration and in a reverse-driving configuration. The switch mechanism includes a cam disposed between the pawls. The cam has a groove for receiving one of the pawls during operation depending on the configuration of the ratchet.



Starting apparatus

Tue, 21 Apr 2015 08:00:00 EDT

In a hydraulic transmission apparatus, a lockup piston of a lockup clutch mechanism is placed on the opposite side of first and second friction plates from a sidewall portion of a front cover. A damper device is placed on the opposite side of the lockup piston from the first and second friction plates. An outer peripheral portion of the lockup piston is located closer to the outer periphery than an outer peripheral portion of a flange member. A part of the lockup piston is placed in a region located between first and second springs and a third spring of the damper device in a radial direction and in the range of an axial width of the third spring located closer to the lockup piston.