Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7980374 | Flow accumulator and clutch control system for automatic transmissions The present invention provides a flow accumulator and a clutch control system for an automatic transmission. The flow accumulator includes a dual area piston disposed in a complementary dual diameter cylinder. The small end of the piston is pressurized by fluid from... | 07/19/2011 |
| 7757831 | Method and apparatus for controlling a motor vehicle clutch A method, and apparatus in the form of a hydraulic unit, for triggering at least one clutch in a hydraulic circuit for an axle transmission of a vehicle. The method and apparatus make it possible to simply and very quickly make available an adequate amount of workin... | 07/20/2010 |
| 7578378 | Valve arrangement for vibration decoupling, which can be connected between a master cylinder and a slave cylinder of a hydraulic force transmission system A valve arrangement for vibration decoupling has a housing, in which two valve bodies are accommodated, a first of which is biased by a spring in a reference direction towards a stop integral with the housing and has a through-path for fluid. The other housing is bi... | 08/25/2009 |
| 7438168 | Cushion plate A cushion plate is provided, for example, between a piston of a hydraulic servo and an adjacent friction plate in a frictional engagement element of an automatic transmission. The cushion plate is deflected by a pressing force of the piston to absorb an engagement s... | 10/21/2008 |
| 7430936 | Method for the control of operational sequencing in an automatic transmission of auxiliary construction A method for controlling operational sequencing of gears in an automatic transmission (102) which has been built in an auxiliary mode. In the case of such a shifting transmission it is possible that during the engagement of its transmission gear stage, impact... | 10/07/2008 |
| 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 |
| 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 |
| 7350354 | Hydraulic actuation apparatus for a motor vehicle clutch A hydraulic actuation apparatus for a motor vehicle clutch includes a master cylinder, a slave cylinder, a hydraulic line forming a main fluid channel connecting the master cylinder to the slave cylinder to form a pressure space, and a damping member arranged in the... | 04/01/2008 |
| 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 |
| 7270224 | Device for the optimization of hydraulically controlled engagement of clutches used in marine transmissions Optimization of hydraulically controlled engagement of clutches in marine transmissions by a device having two clutch control pistons, two solenoid valves arranged between the pumps, aid pistons, a bistable valve connected between the solenoid valves and pistons, a ... | 09/18/2007 |
| 7258217 | Frictional engagement structure using multiple disks A frictional engagement structure includes a first drum arranged at the inner periphery of a transmission casing, a second drum arranged at the inner periphery of the first drum, first friction plates splined to the casing or the first drum, second friction plates s... | 08/21/2007 |
| 7249664 | Fan drive having pressure control (fluid) of a wet friction fan drive A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit (36) includes a pitot tube (152... | 07/31/2007 |
| 7219430 | Oscillating razors A wet shave razor is provided that includes (a) a handle having a hollow head; (b) a cartridge having a body, the body having a surface for engaging the skin of the user and having at least one blade mounted therein; (c) an interconnect member, joined to the cartrid... | 05/22/2007 |
| 7202426 | Master cylinder position switch A clutch assembly having a master cylinder that includes non-contacting position switches is disclosed. The master cylinder controls a slave cylinder that shifts the release bearing of the clutch system. A cruise control interrupt switch and an ignition system inter... | 04/10/2007 |
| 7168545 | Coupling A coupling, used in drivelines or for driving agricultural implements, has a first coupling element (1) and a second coupling element (2). An actuating element (4) is axially displaceable relative to the first coupling element (1) between... | 01/30/2007 |
| 7113855 | Process for controlling front or rear spoilers Method of controlling front or rear spoilers in which at least the rotational speed, the engine torque, the temperature and the standing time (tSTAND) are determined. The required engine power is determined from the detected engine torque, and the front o... | 09/26/2006 |
| 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 |
| 7083034 | Shift apparatus A gear shift device (2) for a motor vehicle comprises one cylinder (4) loaded with a pressure medium. Situated in said gear shift cylinder (4) is one gear shift piston (12) which divides the gear shift cylinder (4) into two working... | 08/01/2006 |
| 7063200 | Pulsation dampening apparatus and clutch master cylinder A pulsation dampening apparatus and a clutch master cylinder used for a hydraulic clutch operation system which has a hydraulic circuit. The apparatus has a housing which has a dampening chamber in the hydraulic circuit and a dampening assembly accommodated in the h... | 06/20/2006 |
| 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 |
| 7048104 | Selective bypass of solenoid-controlled supply to friction elements of an automatic transmission A hydraulic system for controlling the engagement and disengagement of a friction element includes a source of line pressure, a source of exhaust pressure, a manual valve having a forward state and a reverse state, connected to the exhaust pressure source and line p... | 05/23/2006 |
| 7044281 | Clutch engagement control system A clutch engagement control system 100 for engaging a friction clutch 1 by means of an actuator 3, can comprise a magnetostrictive sensor 71 for detecting the state of power transmission over the friction clutch 1, and can be confi... | 05/16/2006 |
| 7036646 | Wet-type multiple disc clutch A wet-type multiple disc clutch comprises a clutch plate set having a plurality of friction plates and a plurality of separator plates alternately interposed between a clutch case and a clutch hub. An oil pressure piston slidably retained in a cylinder chamber is di... | 05/02/2006 |
| 7017438 | Hydraulic gear selection drive means and associated transmission assembly In a transmission of the constant mesh type a number of gear selectors are driven by using a hydraulic coupling between input and output pistons. The hydraulic coupling functions as a hydraulic spring and force multiplier. A hydraulic actuator (23) is receive... | 03/28/2006 |
| 6952922 | Choke valve of clutch release cylinder A choke valve of the clutch release cylinder wherein the actuating oil is slowly discharged when the clutch pedal is released, and when the clutch pedal is depressed, resistance to the actuating oil is minimized for the actuating oil to be swiftly and smoothly suppl... | 10/11/2005 |
| 6920971 | Cushioned hydraulic clutch/brake piston A hydraulic clutch/brake mechanism has an actuator piston assembly therein to control actuation of the associated clutch/brake. The actuator piston assembly has a damping arrangement disposed therein that is operative to damp the movement of the actuator piston asse... | 07/26/2005 |
| 6918478 | Method and unit for controlling a clutch powered by a hydraulic actuator A method and unit for controlling a clutch powered by a hydraulic actuator having a work chamber connected to a solenoid valve; a target value of the pressure of the fluid inside the work chamber is generated, an actual value of the pressure of the fluid inside the ... | 07/19/2005 |
| 6915890 | Learning method for oncoming clutch fill level and volume A method for adaptively learning clutch volumes and fill level to compensate for build tolerances and clutch wear includes increasing a fill level of a clutch during an oncoming fill phase of a clutch to clutch transmission. A state of a regulator valve of the clutc... | 07/12/2005 |
| 6913554 | Methods and systems for improving the operation of transmissions for motor vehicles The present invention is directed to methods and systems for improving the operation of transmissions for automotive vehicles, and in particular the “factory installed” automotive transmissions installed by the original automobile manufacturer. The methods and s... | 07/05/2005 |
| 6907975 | Clutch, in particular for motor vehicle, with pneumatic control A clutch for a motor vehicle having an annular diaphragm (54) with a concave clutch characteristic curve and a pneumatic actuator (76) acting on the diaphragm (54) for clutch release. A mechanism (86, 88) is provided to generate a supplem... | 06/21/2005 |
| 6905433 | Device for control of a hydraulically actuatable shifting element A device for control of a hydraulically actuatable shifting element of a motor vehicle transmission, having one clutch piston which defines, with a first surface, a hydraulically pressurizable piston space and, with a second surface of different size, a hydraulicall... | 06/14/2005 |
| 6899211 | Pinless accumulator piston A replacement accumulator piston for various General Motors transmissions, which absorbs clutch apply fluid pressure to cushion the application of a clutch band against fluid shock is disclosed. The present pinless accumulator piston design eliminates the accumulato... | 05/31/2005 |
| 6892869 | Multi-plate friction clutch A multi-plate friction clutch includes: a clutch piston 10 which is fitted to a clutch outer and capable of being hydraulically operated to press a group of first and second friction plates toward a pressure-receiving plate; an annular retaining groove formed... | 05/17/2005 |
| 6889804 | Clutch control method The present invention provides a clutch connection method which controls the disconnection/connection of a wet friction clutch on the basis of a duty pulse outputted from an electronic control unit. When the clutch is connected, the electronic control unit initially... | 05/10/2005 |
| 6889805 | Clutch hydraulic mechanism A check valve is installed in a hydraulic line for hydraulic oil to be fed to a forward movement hydraulic clutch, while an accumulator for accumulating some amount of the hydraulic oil fed to the hydraulic clutch is installed between the check valve and the hydraul... | 05/10/2005 |
| 6796330 | Pressure control apparatus for a torque-transmitting mechanism A pressure control apparatus is disposed in a pressure control system for a transmission to set pressure control at a torque-transmitting mechanism. The pressure control apparatus includes a torque-transmitting mechanism control valve, which distributes pressure fro... | 09/28/2004 |
| 6789657 | Pressure regulation of speed sensing electronic limited slip differential for axles A clutch pack actuation system for compressing the annular clutch pack of a limited slip differential includes a pump which can provide a supply of pressurized fluid, an annular member provided between the pump and the annular clutch pack, and an annular piston whic... | 09/14/2004 |
| 6782984 | Control method for lockup clutch A control method of a lockup clutch includes eliminating a loss stroke of a piston by a pre-charge of a supplied hydraulic pressure, increasing a force applied to the piston by further supply of the hydraulic pressure after the pre-charge, controlling a slip rotatio... | 08/31/2004 |
