Class 192/104F - Fluid clutches and operators

Subclass of Class 192 - Clutches and power-stop control
No. of patents: 23
Last issue date: 03/28/2006

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Number	Title	Issue Date
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
6874606	Torque limiting clutch having centrifugally regulated characteristic torque A torque limiting clutch or coupler is provided for implementation between input and output shafts. A spring biased friction stack assembly establishes a characteristic breakaway torque of the unit. A torque modifying plate is fixed to a pressure plate and, in conju...	04/05/2005
6557687	Clutch assembly and diagnostic system A process for achieving engagement of a power source with a high inertia load by use of a clutch provides for the sequential engagement of the clutch until the speed of the power source drops to a first threshold, at which time the clutch is disengaged un...	05/06/2003
6382380	Hydraulic power transmission joint A torque varying mechanism comprises an accommodation hole that has a relief hole formed in its bottom and that receives a check ball therein. The accommodation hole is configured so as to present a relationship in which the area of flow passage between t...	05/07/2002
5626215	Speed limiting accessory drive A speed limiting accessory drive for use with an engine in a vehicle. A speed limiting drive pulley (16) is affixed to a crankshaft (14) via a hub (42) and includes a pulley member (24) which drives the accessory belt (18). A Clutch assembly (36) is opera...	05/06/1997
5611416	Speed limiting accessory drive and crankshaft damper A speed limiting accessory drive and crankshaft damper for use with an engine in a vehicle. A speed limiting drive pulley (16) is affixed to a crankshaft (14) via a hub (42) and includes a pulley member (24) which drives the accessory belt (18). A damper ...	03/18/1997
5577584	Multiple pressure-to-current relations in a system having a solenoid-operated hydraulic valve A regulator valve (14) includes a valve spool (30) biased in a valve chamber (32) by control pressure whose magnitude is determined by operation of a variable force solenoid (42), first and second control areas (28, 26) exposed to friction element pressur...	11/26/1996
5257686	Viscous fluid coupling device A viscous fluid coupling device is comprised of (1) an input member, (2) a rotor secured to the input member, (3) an output member having therein an inner space and mounted rotatably on the input member, (4) a partition plate, for dividing the inner space...	11/02/1993
4541513	Fluid power transmission A fluid power transmission adapted for combination with an engine to drive auxiliary equipment thereto including a rotor arrangement for direct driving connection to the engine crankshaft and a housing assembly rotatably supported on the rotor arrangement...	09/17/1985
4471861	Speed and temperature responsive drive apparatus Speed and temperature responsive drive apparatus includes a friction clutch which may be interposed between a vehicle engine and its associated cooling system fan. The clutch is biased toward engagement by a conventional spring and also by a thermal sprin...	09/18/1984
4444073	Torque transfer mechanism with hydraulic control system for a four wheel drive vehicle A four wheel drive torque transfer mechanism with a hydraulic control system is switchable between two wheel drive and four wheel drive during running of a vehicle having an automatic transmission. When a two wheel drive mode of operation is selected, the hydr...	04/24/1984
4414925	Engine cooling fan with shearable drive to eliminate fan overspeed An engine cooling fan driven through a viscous clutch and having a mechanically shearable drive element into the powered input of the viscous clutch which shears at a predetermined low torque level to prevent fan damage due to viscous clutch lockup and li...	11/15/1983
4318311	Centrifugally actuated valve for transmission In a transmission having input and output shafts drivingly connected by fluid pressure operated ratio establishing devices an improved centrifugally actuated valve is provided to disestablish the driving connection maximum angular velocity of the input sh...	03/09/1982
4238020	Centrifugal clutch with an overspeed relief valve and clutch modulation A fluid pressure operated clutch which transmits torque from an engine output shaft to a transmission input shaft, including a rotatable flywheel connected to the output shaft, an adapter connected to the flywheel for rotation with the flywheel, the adapt...	12/09/1980
4142488	Apparatus for preventing excessive running speed for internal combustion engine, especially for motor vehicles Apparatus for preventing overspeeding of an engine is provided. In preferred embodiments, an hydraulically actuable clutch is controlled by a piston-cylinder arrangement connected to a driver operable clutch pedal. The rear side of the piston in this arra...	03/06/1979
4116321	Valve arrangement for closed-loop control system A two-stage, four-way valve has fluid input and output connections, and passes a fluid under controlled pressure to an actuator to operate any component. Such operation is sensed and, after comparison with a reference signal, a control signal regulates th...	09/26/1978
4086993	Transmission overspeed inhibitor An improvement in a drive transmission for coupling an engine to a driven load at any selected one of a plurality of drive ratios which comprises a gear section having an input shaft, an output shaft, a plurality of gears and shift devices for interconnec...	05/02/1978
4084601	Speed control valve for a fluid operated clutch A control valve for a fluid operated clutch or the like, including a valve body, a first valve mounted for reciprocation in the valve body, a second valve mounted for reciprocation in the valve body and for relative movement with respect to the first valv...	04/18/1978
4082012	Transmission and control with centrifugal dump valve A multiratio powershift transmission having fluid operated drive devices including a forward clutch with an apply chamber supplied with fluid apply pressure to engage the clutch for forward drives and exhausted to disengage the clutch for reverse drive. T...	04/04/1978
4071126	Safety apparatus in an automatic transmission for a vehicle to prevent engagement of the low speed clutch at high speeds In an automatic transmission apparatus for a vehicle of the type having a high speed clutch of oil pressure operated type interposed in a high speed power transmission system and a low speed clutch of oil pressure operated type interposed in a low speed p...	01/31/1978
3997042	Aircraft engine coupling A torque responsive coupling includes an intermediate coupling member with helical splines thereon selectively engageable with first and second axially spaced helically splined coupling discs connected respectively to an engine power shaft and to a gear r...	12/14/1976
3982615	Constant speed drive A constant speed drive system which is automatically controlled according to the load of the pump, fan, etc. driven by the system. Control of the system is achieved by means of a pump or compressor and a diaphragm-actuated spool valve, wherein a reference...	09/28/1976
3973658	Clutch control means for a pneumatic needle positioner A machine comprising a rotary drive shaft and a pneumatically operated clutch: a plurality of pressure chambers to which air is supplied for controlling said clutch; means for varying the air pressure in one of said chambers corresponding to the speed of ...	08/10/1976

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Class 192/104F - Fluid clutches and operators