| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 192560100 |
Overload release
| 63 |
| 192550200 |
With flexible shaft coupling permitting limited relative rotation
| 11 |
| 192550100 |
With overload release coupling
| 9 |
| 192540500 |
Cam operated
| 7 |
| 192540300 |
Fluid operated | 5 |
| 20090090591 | METHOD FOR DETERMINING A TORQUE CHARACTERISTIC OF AN AUTOMATED FRICTION CLUTCH - A method for determining a torque characteristic of a friction clutch located in a drive train of a motor vehicle in the force flow between a drive engine and a transmission and which is closed in its rest position. At least two marker points of a regulating-path-dependent torque characteristic are determined, one of which is determined at a slipping limit of the clutch. To enhance determination of the torque characteristic, a first marker point is determined with the clutch engaged, the transmission in neutral and the engine running, by slowly disengaging the clutch until a reduction in the speed of the transmission input shaft relative to the engine speed is detected. A corresponding pair of values of this marker point with the known braking torque of the input shaft and the set position are used for adapting an existing characteristic. | 04-09-2009 |
| 20090101464 | METHOD FOR CONTROLLING AN AUTOMATED FRICTION CLUTCH - A method for controlling an automated friction clutch arranged in a drive train of a motor vehicle in the force flow between a drive engine ( | 04-23-2009 |
| 20100101913 | CLUTCH SYSTEM AND METHOD FOR CONTROLLING A CLUTCH SYSTEM - The invention relates to a device and to a method for controlling a coupling system having a coupling provided with a hydraulic actuation system, which includes an adjustable coupling part for connecting and separating a power transmission path between a coupling input side and a coupling output side, a hydraulic connection that connects the actuation unit to an electrohydraulic actuator that is arranged outside the coupling, and a control unit for controlling the actuator. The hydraulic connection forms a hydraulic system together with hydraulic components of the actuation unit and the actuator. According to the invention, a mechanical stop that delimits the adjustment of the coupling part on the actuation unit is formed. A pressure sensor monitors the pressure in the hydraulic system or a control signal of the actuator. The pressure sensor detects an installation of the coupling part on the stop based on occurring characteristic alterations of the pressure in the hydraulic connection or the control signal and controls the electrohydraulic actuator in accordance therewith and/or produces a diagnosis signal. | 04-29-2010 |
| 20100243397 | ELECTRONICALLY-CONTROLLED HYDRAULICALLY-ACTUATED COUPLING - A power transmission device includes a rotatable input member, a rotatable output member, a clutch assembly to selectively transfer torque between the input member and the output member, and a controller for controlling the clutch assembly. The controller controls the clutch assembly based at least partly on a torque request. | 09-30-2010 |
| 20110079483 | SAFETY COUPLING FOR THE TRANSMISSION OF ROTARY MOTION - The safety coupling includes a driving part ( | 04-07-2011 |
| 192540400 |
Magnetic or electromagnetic | 3 |
| 20100170763 | TRANSMISSION DEVICE HAVING OVERLOAD PROTECTION SUBASSEMBLY - A transmission device includes a first transmission mechanism comprising a first rotatable member and a first transmission member fixed to the first rotatable member for rotating together with the first rotatable member; and a second transmission mechanism comprising a second rotatable member and a second transmission member fixed to the second rotatable member for rotating together with the second rotatable member. The second transmission member received in the first transmission member, and the second transmission member being magnetically connected with the first transmission member. When a load applied to the first transmission mechanism is less than a predetermined value of the first transmission mechanism, the first transmission member rotates together with the second transmission member by a magnetic force generated therebetween, which in turn makes the first transmission mechanism rotates with the second transmission mechanism together. | 07-08-2010 |
| 20100307884 | ELECTROMAGNETIC CLUTCH - An electromagnetic clutch includes an external drive source, a driven apparatus having a rotary shaft, a power transmission path, first and second rotating parts, a power source, an electromagnetic coil and a power cutoff mechanism. A power transmission path is formed between the external drive source and the driven apparatus, and in which the first and the second rotating parts, the electromagnetic coil and the power cutoff mechanism are disposed. The first rotating part is driven to rotate by power from the external drive source. The second rotating part is mounted on the rotary shaft for rotation therewith. The electromagnetic coil is energized by electric current from the power source to generate electromagnetic attraction force by which the first and the second rotating parts are connected for transmitting power therebetween. The power cutoff mechanism stops excessive power transmission from the external drive source to the driven apparatus when the electromagnetic coil is energized. | 12-09-2010 |
| 20130206534 | LOAD SENSITIVE MAGNETIC CLUTCH DEVICE - A load sensitive magnetic clutch device includes: a magnetic pole rotating body having magnetic poles arranged on the circumference thereof and provided with a clutch projection of a claw clutch at an end thereof; a yoke rotating body configured to rotate about an axial center of rotation identical to that of the magnetic pole rotating body; and high-torque input means configured to rotate about the identical axial center of rotation and having a clutch engaging portion engaging the clutch projection, wherein the clutch projection is formed of a magnetic body, the clutch engaging portion includes a clutch retaining magnetic body configured to attract the clutch projection by a magnetic force, and the clutch projection is attracted by the clutch retaining magnetic body by an application of a load torque exceeding a torque which is transferrable between the magnetic pole rotating body and the yoke rotating body. | 08-15-2013 |
| 192540200 |
Hub clutch | 1 |
| 20100252387 | Torque Limited Decoupler - A decoupler assembly is provided for allowing an alternator to be rotatably driven by a serpentine belt in an engine of an automotive vehicle and for allowing the speed of the belt to oscillate relative to the alternator. A hub is fixedly carried by a drive shaft from the alternator for rotation therewith. A pulley is rotatably journaled to the hub by a ball bearing assembly. A bare, helical clutch spring is operatively coupled between the hub and pulley for transferring rotational movement from the pulley to the hub during acceleration of the pulley relative to the hub by the serpentine belt and for allowing the hub to overrun the pulley during deceleration of the pulley relative to the hub. A torque limiter, preferably a spring or sleeve, is wrapped about the torsion limiting outward expansion of the torsion isolating the torsion spring from torques above a predetermined limit. | 10-07-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20080210509 | Method for Determining A Driving Torque Correction Factor for Compensating Cooperating Driving Torques of Different Drive Devices - A method and device for determining a driving torque correction factor for compensating the driving torques of a drive unit including a first drive device and a second drive device, both of which act with their driving torque on a common drive shaft. The method includes specifying and setting a desired driving torque for one of the two drive devices, adjusting a brake torque for the other of the two drive devices to a brake torque value, which is equivalent to the value of the actual driving torque (that occurs on the basis of the desired driving torque) of one of the two drive devices, and determining the correction value as a function of the specified desired driving torque of the one drive device and as a function of the brake torque value of the other drive device, the brake torque value being adjusted at the time of the compensation of the torques. | 09-04-2008 |
| 20080277229 | Method For Controlling a Motor Vehicle Drive Train - A method for controlling a motor vehicle drive train including a combustion engine, an electric machine and a transmission, which are coupled by a summation gear system, having two input and one output elements, and a clutch. One input element is coupled to the crankshaft of the combustion engine, the other input element is coupled to the rotor of the electric machine and the output element is coupled to the input shaft of the transmission and the clutch is arranged between two elements of the summation gear system, such that when the clutch is disengaged a speed difference between the combustion engine and the transmission input shaft is synchronized by the electric machine and, if necessary, by a controlled engagement of the clutch. To improve synchronization, at the beginning of the synchronization the clutch is brought to its contact point before the engagement of the bridging clutch. | 11-13-2008 |
| 20090139822 | Torque-controlling actuator clutch and tool system having the same - A torque-controlling actuator clutch is used in a tool system with a motor for rotating a bit. The actuator clutch includes a driving shaft rotatingly driven by the motor, a driven shaft operatively connected to and rotated by the driving shaft, the bit removably attached to the driven shaft, a clutch mechanism for selectively coupling and uncoupling the driving shaft and the driven shaft and an actuator operated by a pressure of a working medium for pressing the clutch mechanism into engagement so that a torque can be transferred from the driving shaft to the driven shaft. A control unit is used to control the pressure of the working medium supplied to the actuator and the torque transferred from the driving shaft to the driven shaft. | 06-04-2009 |
| 20100294608 | Torque/rotational speed differential-dependent coupling actuation unit for engine-driven vehicles - The invention relates to a clutch operating unit for engine-driven vehicles, the clutch of which can be operated arbitrarily as well as depending on a torque/speed difference occurring at the clutch. The clutch operating unit comprises an actuator on the gear box side and the engine side. On the actuator, chutes and counter chutes and contact surfaces are formed which mutually engage; the chutes, counter chutes and contact surfaces transmitting a drive torque when the actuators are rotated in a rotating direction over the contact surfaces and, when the actuators are rotated in reverse rotating direction, converting the rotating movement into an axial movement of an actuator by means of the chutes and counter chutes, the axial movement effecting the releasing of the clutch. The clutch operating unit is characterized in that the actuator ( | 11-25-2010 |
| 20110000756 | BI-DIRECTIONAL IMPACT ABSORPTION DEVICE FOR A CLUTCH REACTION PLATE - A clutch reaction plate includes an annular device having a plurality of radially configured, alternating inwardly-oriented splines and keys, the splines and keys configured to meshingly engage a coaxial correspondingly-splined second device inserted therein. Selected ones of the splines include a bi-directional impact absorption device configured to engage selected ones of the splines of the inserted second device when a torque load is applied in one of a first rotational direction and a second, opposing rotational direction. The remaining splines engage the remaining splines of the inserted second device when the applied torque load exceeds a reaction force of the bi-directional impact absorption device. | 01-06-2011 |
| 20110192694 | TORQUE LIMITER - In a spring type torque limiter, it is proposed to prevent the cut end portions of the coil spring fitted on the inner ring from causing chatter of the torque limiter, even if the cut end portions of the coil spring are separated from the radially outer surface of the inner ring in order to prevent burrs remaining on the cut end portions of the coil spring from contacting the radially outer surface of the inner ring. The first cut end portion ( | 08-11-2011 |
| 20120103749 | CONTROL DEVICE OF VEHICLE - A control device of a vehicle includes: power dividing mechanism that has a plurality of rotating elements rotated by torque output and transmitted from an engine and a first motor/generator and switches a transmission mode according to the engaging states of the respective rotating elements; and a clutch that has a first engaging member and a second engaging member having a backlash between them in a rotating direction thereof, and that sets a transmission mode to a fixed transmission ratio mode by engaging the first engaging member connected to one of the rotating elements with the second engaging member, and sets the transmission mode to a continuously variable transmission ratio mode by releasing the engagement. In the control device of a vehicle, the magnitude of the reversed rotating torque is reduced when the direction of rotating torque acting between the first and seconds engaging members. | 05-03-2012 |
| 20140116832 | CONTROLLABLE OR SELECTABLE COUPLING ASSEMBLY HAVING AN OVERRUN MODE AND A RETAINED CONTROL ELEMENT - A controllable or selectable coupling assembly having an overrun mode and a retained control element is provided. The assembly includes first and second coupling members having first and second coupling faces, respectively, in close-spaced opposition with one another. A locking member is disposed between the coupling faces of the coupling members. The locking member is movable between first and second positions. A control element is mounted for controlled movement between the coupling faces and is operable to control position of the locking member. The control element has at least one opening which extends completely therethrough to allow the locking member to extend therethrough. A retainer mechanism is operative to allow limited movement of the control element towards the first coupling face and prevent the control element from contacting the first coupling member in the overrun mode thereby reducing spin losses when the assembly is disengaged. | 05-01-2014 |
| 20160178015 | Multi-Level Torque Clutch | 06-23-2016 |
