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| Number | Title | Issue Date |
| 7735618 | Clutch control device A clutch control device for controlling the operation of a hydraulically operated clutch with a flow control valve. The control device includes a volume flow regulating valve that enables both volume flow regulated filling and volume flow regulated emptying of a hyd... | 06/15/2010 |
| 7654377 | Hydraulic actuator for a vehicular power train An actuator system includes a piezoelectric pump; an accumulator including a cylinder, a piston located in the cylinder, a port located at a first side of the piston and hydraulically connected to the pump outlet and a switching circuit, a relief port hydraulically ... | 02/02/2010 |
| 7635057 | Device for the control at least of a hydraulically operable switching element of an automatic transmission A device for controlling a hydraulically operable switching element (2) of an automatic transmission of a vehicle with a position valve mechanism (3) having a main switch piston (6) which is spring biased into a first switch position and a secon... | 12/22/2009 |
| 7392892 | Controlled leak compliance and method for hydraulic clutch control systems The present invention provides a controlled leak within the clutch feed passage of the hydraulic clutch control system. The controlled leak will operate to provide compliance to the hydraulic clutch control system and may prevent pressure overshoot conditions during... | 07/01/2008 |
| 7357235 | Automatic gearbox with a hydraulically actuated shifting element An automatic gearbox for a vehicle with at least one hydraulically actuated shifting element made as a transmission brake or transmission clutch. The shifting element has an inner disk carrier and an outer disk carrier where inner disks and outer disks are arranged ... | 04/15/2008 |
| 7356399 | Failure determination system for stepless speed changer and failure determination device for start clutch There is provided a failure determination system for a continuously variable transmission of a belt type, which is capable of determining failure of control valves for performing speed varying operation, and enhancing maintainability. An ECU controls a transmission ... | 04/08/2008 |
| 7350634 | Method for adjusting an incremental path measurement unit in an actuation device of a pressure-closed clutch as well as an actuation device Actuation devices are disclosed for a pressure-closed clutch where the position of an actuation member is acquired by an incremental sensor. In an embodiment of the actuation device, the signal of the incremental sensor is acquired in case of a sudden change in the ... | 04/01/2008 |
| 7337887 | Method of actuating a clutch A method of actuating a clutch in a power transmission device having a first rotary member and a second rotary member includes compressing a spring, releasing the spring to pressurize a fluid, supplying the pressurized fluid to a piston, and applying a force from th... | 03/04/2008 |
| 7335133 | Control apparatus method for automatic transmission A control apparatus for an automatic transmission includes an engine; a torque converter connected with the engine; an oil pump driven by the engine; a starting clutch adapted to be engaged by an engagement pressure produced by the oil pump to transmit propelling po... | 02/26/2008 |
| 7331564 | Normally open high flow hydraulic pressure control actuator A solenoid-operated valve includes a valve body defining a valving bore for providing a path of communication between axially spaced inlet and outlet ports. A solenoid assembly is attached to the valve body and includes an inductor coil, a fixed flux guide and an ar... | 02/19/2008 |
| 7325885 | Regulator valve for a torque-transmitting mechanism and method of engaging a torque-transmitting mechanism A regulator valve for controlling the pressure of fluid engaging a torque-transmitting mechanism in a transmission includes a valve body forming a valve bore of a plurality of passages. A spool valve slides within the valve body. A check valve selectively opens and ... | 02/05/2008 |
| 7314128 | Clutch control regulator valve with end of fill detection A torque-transmitting regulating system employs a valve mechanism, which distributes fluid pressure from a pressure source to a torque-transmitting mechanism by control for the engagement and disengagement thereof. The valve mechanism has associated therewith a pres... | 01/01/2008 |
| 7296669 | Simple action actuator with a hydraulic fast-opening valve for controlling a clutch An actuator with a simple function for the control of a friction clutch in the drive train of a motor vehicle having a cylinder/piston unit for generating the contact pressure of the clutch should be fast, inherently safe and nevertheless simple and inexpensive. For... | 11/20/2007 |
| 7282005 | Hydraulic control apparatus of automatic transmission A hydraulic control apparatus of an automatic transmission. The hydraulic control apparatus of the automatic transmission has a hydraulic servo for controlling an engaging state of a clutch C-1 on the basis of supplied oil pressure, a linear solenoid valve fo... | 10/16/2007 |
| 7255214 | Damper lock-out clutch and motor/generator cooling multiplexed control system and method for an electrically variable hybrid transmissions The present invention provides a multiplexed control system, employing a single solenoid valve, to selectively control the damper lock-out clutch and motor/generator cooling of an electronically variable hybrid transmission. The present invention also contemplates a... | 08/14/2007 |
| 7247112 | Method and apparatus for cooling and lubricating a hybrid transmission A method and apparatus for efficiently cooling and lubricating rotating components in a hybrid transmission is provided. By efficiently managing cooling flow to and between the rotating elements, flow requirements and associated pumping requirements within the drive... | 07/24/2007 |
| 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 |
| 7222703 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, made with a pump connected to a relevant reservoir, characterized in that the reservoir is disposed inside a containment body and exhibits a concave portion shaped complementarily to a handlebar's portion to... | 05/29/2007 |
| 7214165 | Method of automatically flushing debris from an electrically-operated hydraulic valve The normal control of an electrically-activated hydraulic valve armature is overridden to automatically and periodically open the armature for flushing out debris that has accumulated between the armature and a seat that the armature is designed to engage. The valve... | 05/08/2007 |
| 7210376 | Device for transmitting torque between two rotatable, coaxial schaft members A device for transmitting torque between two rotatable, coaxial shaft members (1, 2) contains a clutch (35) between the two shaft members and engageable—to counteract rotational speed differential between the shaft members—by a hydraulic piston ( | 05/01/2007 |
| 7210566 | Friction coupling assembly with auxiliary clutch control of fluid pump A friction coupling assembly for a gear drive unit. The friction clutch assembly comprises an input member and at least one output member, a friction clutch for selectively coupling the input member with the at least one output member and an actuator assembly for se... | 05/01/2007 |
| 7210371 | Control lever assembly A control lever assembly suitable for use in connection with an offroad motorcycle. The lever assembly includes a control lever having a finger grip portion and a mount portion. A control lever support has a first flange and a second flange defining a space therebet... | 05/01/2007 |
| 7204151 | Seal load inspection apparatus A metal cap 12 is fitted over a vessel (vial 2), into which a rubber plug 4 is driven, and using a pressure block 10, a load is applied to the cap 12 through the top surface 12b thereof to maintain the rubber plug ... | 04/17/2007 |
| 7204088 | Lever device for hydraulic operation In a lever device for a hydraulic operation where hydraulic pressure is generated in a master cylinder by rotation of a lever, to make invariable an operation of a pushrod, which operates a piston of the master cylinder by being pushed at one end thereof by an adjus... | 04/17/2007 |
| 7204170 | Device for transmitting torque between two rotatable, coaxial shaft members A device for transmitting torque between two rotatable, coaxial shaft members contains a clutch between the two shaft members and engageable to counteract rotational speed differential between the shaft members by a hydraulic piston under the control of an electrica... | 04/17/2007 |
| 7201266 | Hydraulic clutch actuation system A torque transfer mechanism for controlling the magnitude of a clutch engagement force exerted on a clutch pack that is operably disposed between a first rotary member and a second rotary member includes a hydraulic clutch actuation system. The hydraulic clutch actu... | 04/10/2007 |
| 7188717 | Control apparatus for power train including continuously variable transmission A control apparatus for a power train including a continuously variable transmission and a clutch arranged in series with the continuously variable transmission is provided in which an engaging pressure of the clutch is first reduced until a slip occurs, and is then... | 03/13/2007 |
| 7182194 | Low power modulating clutch control system with combination accumulator and piston actuator A power transmission device includes a rotary input member receiving drive torque from a source of torque, a rotary output member for providing drive torque to an output device and a torque transfer mechanism for transferring drive torque between the input member an... | 02/27/2007 |
| 7174246 | Method and system for regulating the torque-transmission capacity of a frictionally engaged, torque transmitting assembly A method and system for regulating the torque transmitting capacity of a frictionally-engaged torque-transmitting assembly located in the drive train of a motor vehicle. The torque-transmitting assembly has an input and an output, the values of which, such as input ... | 02/06/2007 |
| 7169081 | Method for actuating a clutch at low temperatures A method for clutch actuation at low temperatures for a motor vehicle having a hydraulically actuatable clutch, below a predetermined temperature a situation-dependent pre-opening of the clutch is executed when a braking is probable. ... | 01/30/2007 |
| 7163096 | Double clutch drive with position maintaining function A double clutch drive has a first and a second clutch, wherein for normal operation for the closing and opening of the first clutch a first hydraulic device governed by an electronic control is provided, and for the closing and opening of the second clutch a second ... | 01/16/2007 |
| 7163481 | Driving force transmitting system A manual valve is provided between a mechanical oil pump and a clutch of an automatic transmission device for connecting an engine with the automatic transmission device, a first check valve is provided in a passage connecting the mechanical oil pump with the manual... | 01/16/2007 |
| 7159704 | Hydraulic system A hydraulic system in a motor vehicle for operating a friction clutch is described, including a slave cylinder acting upon a spring plate of the clutch, and a manually or automatically operated master cylinder acting upon the slave cylinder. The hydraulic system inc... | 01/09/2007 |
| 7150288 | Control valve apparatus A control for parallel hybrid transmission has a valve mechanism, which is operable to supply fluid pressure to a torque-transmitting mechanism with or without the operation of the vehicle engine. The valve mechanism is responsive to an electrically driven pump to s... | 12/19/2006 |
| 7142967 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhan... | 11/28/2006 |
| 7137362 | Bi-assembly spring end cap for vehicle on/off fan drive to improve seal life, reduce vibration input loading to ball bearings and reduce component cost An on/off clutch assembly is disclosed having a two component spring end cap. The spring end cap includes a steel cap portion and a non-metallic portion. The non-metallic portion extends along the entire length of the steel cap portion and is located between the ste... | 11/21/2006 |
| 7128688 | Hydraulic control for automatic transmission A hydraulic control system for an automatic transmission includes a lubrication passage for feeding lubricating oil to a wet clutch and lubrication points of the transmission, first and second passages with a large-diameter orifice and a small-diameter orifice, resp... | 10/31/2006 |
| 7104373 | Electro-pneumatic shifting system An electro-pneumatic control system for a motorcycle transmission. A pneumatic clutch cylinder used to disengage the clutch by pulling in a clutch lever via a clutch cylinder rod. Optionally, manual override of the clutch control may be provided for by linking the c... | 09/12/2006 |
| 7104380 | Dual area piston for transmission clutch and sequential control therefor A system for actuating a clutch that alternately driveably connects and disconnects components, includes a clutch having a piston that includes a first apply area and a second apply area, a fluid pressure source, a source of variable control pressure, and a control ... | 09/12/2006 |
