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| Number | Title | Issue Date |
| 7361121 | Control device and method for input clutch of work vehicle A controller serving as determination device determines whether or not a rising speed of the clutch pressure of the input clutch is less than a limit rising speed of the original pressure. A controller serving as original pressure control device adjusts the original... | 04/22/2008 |
| 7234366 | Power take-off control system A control system and method for detecting variable load types and controlling the operation of a PTO clutch to effect engagement of the clutch with variable loads, and especially to more optimally effect the engagement of a clutch with a very light load or an associ... | 06/26/2007 |
| 7234367 | Power take-off control system A control system and method for detecting variable load types and controlling the operation of a PTO clutch to effect engagement of the clutch with variable loads, and especially to more optimally effect the engagement of a clutch with a heavy load is disclosed. The... | 06/26/2007 |
| 7159701 | Automatic drag brake for a power take-off unit output shaft Improvement in a drag brake assembly for a power take-off unit, for use on trucks and the like, including a first reaction member axially located on an output shaft thereon; a brake disc rotatably affixed to and axially movable on the output shaft; a second reaction... | 01/09/2007 |
| 7066305 | Brake bands for an automatic transmission and method for controlling a gear shift in automatic transmission and feedback loop control system A brake band shifting mechanism for an automatic transmission. The brake band shifting mechanism includes a brake band encircling a brake drum of the transmission. A first end of the brake band is mounted to a secured portion of the transmission by a first linkage a... | 06/27/2006 |
| 7051856 | Method and apparatus for applying and releasing a clutch An apparatus for applying and releasing a clutch piston in a clutch cylinder against a return spring includes a fill oil chamber having first and second portions separated by a fill piston. The first portion is in fluid communication with the clutch cylinder through... | 05/30/2006 |
| 7048106 | Power take-off control system and method A PTO control system and method for engaging a PTO clutch of a vehicle or work machine such as, but not limited to, an agricultural tractor, that can effectively utilize both engine speed and PTO output speed values for determining a predicted and/or actual PTO load... | 05/23/2006 |
| 7028822 | Integrated actuator assembly An actuator assembly adapted to selectively cause an input disk of a clutch/brake assembly to engage an output disk of a clutch/brake assembly. The actuator assembly includes a movable piston integrated with the clutch/brake assembly. At least a portion of the clutc... | 04/18/2006 |
| 7012045 | Method of improving the frictional properties of functional fluids A method of improving the brake and clutch capacity of a functional fluid comprising adding a friction-modifying amount of a polyalkenyl sulfonate to the functional fluid, wherein the polyalkenyl sulfonate is an alkali metal or alkaline earth metal salt of a polyalk... | 03/14/2006 |
| 6955628 | Change-speed system for utility vehicle A change-speed system for a utility vehicle includes a gear change-speed device operated for change speed in response to an operation of an actuator, a hydraulic clutch for selectively engaging/disengaging power transmission to the gear change-speed device, a curren... | 10/18/2005 |
| 6886672 | Power transmitting apparatus for a working vehicle A power transmitting apparatus comprises a housing having an opening at its end surface in the longitudinal direction thereof to be closed by a cover member (33), which supports an end of a brake support shaft (60) rotatably supporting a brake shoe ( | 05/03/2005 |
| 6755289 | Rotational control apparatus A rotational control apparatus (10) includes multiple facings (274-276) which sandwich multiple friction plates (252, 253) rotatable with. To create turbulent air flow, the friction plates (252, 253) include an undulating outer circumfere... | 06/29/2004 |
| 6622836 | Release system for a clutch assembly A release system for a clutch assembly comprises a release slide, which is or can be connected to a stored-energy element of the clutch assembly to execute release movements, and at least one brake element, which can move along with the release slide duri... | 09/23/2003 |
| 6540054 | Method for increasing viable wear life of clutch brake friction materials A system and method for increasing the viable wear life of friction materials used on mechanical stamping hydraulic clutch/brake units by controlling the hydraulic clutch pressure to compensate for clutch wear.... | 04/01/2003 |
| 6422364 | Press drive with oil shear clutch/brake units A drive unit for a press uses an oil shear brake and an oil shear clutch which are located axially along the output member of the drive unit. A multiple piece piston moves between a brake applied/clutch disengaged position to a brake released/clutch engag... | 07/23/2002 |
| 6419060 | Clutch/brake drive A press drive has an oil shear clutch and an oil shear brake located within a chamber defined by a housing. The chamber is filled with lubricating oil. A fluid passage is formed from the chamber through an output member and then to the friction discs of t... | 07/16/2002 |
| 6289986 | Pump rod drive and torque release mechanism A pump rod drive and torque release mechanism for use in association with a downhole pump positioned within a well. The pump rod drive and torque release mechanism comprises a central housing having a generally hollow interior, a drive shaft received with... | 09/18/2001 |
| 6283263 | Clutch and brake control system for tracklaying construction vehicle A clutch and brake control system for a tracklaying construction vehicle is disclosed, which comprises a turning operation system and a driving brake operation system. The turning operation system is operative to carry out slow turning steering and quick ... | 09/04/2001 |
| 6267189 | Power take-off engagement control system An apparatus and method is disclosed for controlling engagement of a power take-off shaft (PTO) on a vehicle. The apparatus includes a clutch including an input shaft coupled to a power source and an output shaft coupled to the PTO. The apparatus also inc... | 07/31/2001 |
| 6148976 | Multi-spindle machine high speed/low speed system A clutch arrangement for a multi-spindle machine includes a starting clutch 12 and a machine brake clutch 14 positioned on a starting clutch drive shaft 16. A high speed clutch 18 and a snubbing clutch 22 are positioned on a long worm drive shaft 20. All ... | 11/21/2000 |
| 6142274 | Power take-off unit with selectively engaged brake A power take-off unit includes a hydraulically actuated brake assembly which is automatically engaged when a hydraulically actuated clutch assembly is disengaged, and further which is automatically disengaged when the clutch assembly is engaged. The power... | 11/07/2000 |
| 6131714 | Auxiliary drive for utility vehicle and method of operation thereof A power-take-off of a utility vehicle such as an agricultural tractor has a clutch (3) and a brake (18) to retain the output shaft against rotation when the clutch is disengaged. The invention provides a means of automatically disengaging the brake to per... | 10/17/2000 |
| 6095298 | Wet clutch/brake for a mechanical press A mechanical press having a wet or oil shear clutch/brake drive unit is provided including elimination of undamped clearances. Lubrication oil utilized in the press flywheel bearing is ported and communicated into the clutch brake unit for use therein, el... | 08/01/2000 |
| 6095297 | Hydraulic system for a power-take-off clutch A hydraulic system for a power-take-off in a utility vehicle is described, having a pump (8) supplying hydraulic fluid to the clutch (1), the brake (2) and a lubricating circuit, a control valve for engaging and releasing the clutch and a device containin... | 08/01/2000 |
| 6021876 | Electrical proportional pressure control valve A pressure control valve having an electric first stage pilot with a single pilot outlet port and providing a variable pressurized hydraulic fluid to the pilot outlet port and at a pressure that is proportional to an electric input signal variable between... | 02/08/2000 |
| 6000511 | Arrangement of foot operating elements for a motor vehicle An arrangement of foot operated elements for a motor vehicle includes a first element with a power booster for operating a brake and a second element with a second power booster for operating a clutch of the motor vehicle. The second power booster for act... | 12/14/1999 |
| 5868230 | Hydraulic motion control valve and lever The present invention provides a hydraulic motion control or pilot valve and lever assembly for controlling the transmission and steering of a work vehicle such as a crawler tractor, articulated wheel loader or like construction vehicle. The motion contro... | 02/09/1999 |
| 5806640 | Clutch control for locked power take off shaft during power take off clutch engagement A power take off (PTO) clutch control system for an agricultural tractor is disclosed herein. The PTO clutch is a hydraulic clutch which is operated by a proportional valve capable of pressurizing the clutch with hydraulic fluid at a pressure related to t... | 09/15/1998 |
| 5787710 | Hydraulic emergency control for friction coupling arranged between the internal combustion engine and transmission A hydraulic emergency circuit for a hydraulically-operated friction clutch disposed as a part as an electro-hydraulic clutch control between an internal combustion engine and a transmission has a hydraulic pump provided for supplying at least one working ... | 08/04/1998 |
| 5743366 | Auto-modulating hydraulic circuit and related method Disclosed is a modulating hydraulic circuit for controlling a clutch such as the clutch on a power takeoff (PTO) shaft. The circuit includes a throttling valve having (a) an inlet port for receiving hydraulic fluid from a source, and (b) a discharge port ... | 04/28/1998 |
| 5680915 | Brake and clutch control system A press includes a drive system which includes a brake and a clutch operated by fluid pressure. The brake and clutch control the movement of a crankshaft in relation to a flywheel. A unique control system supplies the pressurized fluid for operation of th... | 10/28/1997 |
| 5657843 | Press drive with oil shear clutch/brake drives A drive unit for driving a press is disclosed. The drive unit uses a hydraulically actuated oil shear brake unit located on one side of a flywheel and a hydraulically actuated oil shear clutch unit located on the opposite side if the flywheel. The brake i... | 08/19/1997 |
| 5651436 | Brake and clutch control system A control system for a press having a clutch and a brake includes a clutch control valve and a brake control valve. The clutch control valve operates the clutch by supplying pressurized air to the clutch. The brake control valve operates the brake by supp... | 07/29/1997 |
| 5575365 | Overspeed protection system for a vehicle The invention provides an overspeed protection system for a vehicle such as a mine skip travelling along a vertical set of rails 60. In use an idler wheel 62 in contact with a rail 60 rotates a shaft 12 forming part of a clutch 10 at speeds which are dire... | 11/19/1996 |
| 5549185 | Power take off torque limiting control system A power take off (PTO) clutch control system is disclosed herein. The PTO clutch is a hydraulic clutch which is operated by a proportional valve capable of pressurizing the clutch with hydraulic fluid at a pressure related to the pulse width of a pulse wi... | 08/27/1996 |
| 5494142 | Power take off clutch engagement control system A power take off (PTO) clutch control system is disclosed herein. The PTO clutch is a hydraulic clutch which is operated by a proportional valve capable of pressurizing the clutch with hydraulic fluid at a pressure related to the pulse width of a pulse wi... | 02/27/1996 |
| 5487456 | Press drive with oil shear clutch/brake drives with internal flywheel brake A base unit for driving a press is disclosed. The unit uses two hydraulic actuated oil shear brake/clutch units which are in coaxial nested relationship. The basic unit provides a core assembly which can easily be modified or adapted to be mated with any ... | 01/30/1996 |
| 5476152 | Steering control system by pilot pressure A steering control system provides a pilot pressure capable of ensuring excellent responsiveness and light operation force and constant shifting strokes of the control lever even in case of wear of the brake and the clutch. The control lever (1) for use i... | 12/19/1995 |
| 5462147 | Engagement control mechanism for a torque transmitting device A pair of selectively operable torque transmitting devices, such as a clutch and brake, are provided to control the torque and speed ratio in a planetary gear set. One device, a clutch, is spring engaged, to provide direct drive in the planetary set, and ... | 10/31/1995 |
| 5452779 | Dual piston hydraulic cylinder for clutch and upshift brake actuator A dual piston hydraulic cylinder for actuating a clutch and an upshift brake in a heavy-duty vehicle is provided which achieves consistent, selectable, sequential, and controllable operation utilizing a single control pedal. A preloaded spring located bet... | 09/26/1995 |
