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| Number | Title | Issue Date |
| 6277049 | Shift control system responsive to low oil temperature A shift control system executing a shift of an automatic transmission with a manual shift mode from a first speed position to a second speed position. A controller of the shift control system controls a first valve for varying a pressure applied to a firs... | 08/21/2001 |
| 4901602 | Planetary gear assembly for a planetary transmission A planetary gear assembly is disclosed for a planetary gear transmission which also includes a sun gear and a casing. The planetary gear assembly is comprised of a ring-shaped planetary ring gear (7) and two planetary discs (6) supporting the planetary ri... | 02/20/1990 |
| 4858500 | Apparatus for controlling lock-up clutch in automatic transmission system having main transmission and sub-transmission A transmission control device according to the present invention comprises a main transmission having a torque converting device provided with a direct clutch for effecting engagement and disengagement of the input member with output member of a torque co... | 08/22/1989 |
| 4823630 | Distributor for independently distributing rotational drive in a sailing craft A distributor for independent plural drive inputs (14,15) to plural drive outputs (12,13), especially for sailing craft, enables permutation of drives e.g. both to one output, both to the other or independently to each. Dog clutches (34-37) are engageable... | 04/25/1989 |
| 4811627 | Main transmission gearbox for a twin-engined helicopter In a main transmission gearbox for a helicopter having two engines, a lifting rotor and an anti-torque rotor, each of the two engines drives a main kinematic chain comprising from upstream down, an input shaft, a twistable shaft, a gear train forming a fi... | 03/14/1989 |
| 4750386 | Engine air/fuel ratio controller The air/fuel ratio of an engine during its open loop fuel controlled warm up period is established by one schedule while the vehicle automatic transmission is in drive and established by another schedule while the vehicle automatic transmission is in neut... | 06/14/1988 |
| 4724724 | System for controlling line pressure of a continuously variable transmission for a motor vehicle A control system for a motor vehicle provided with a continuously variable transmission and with an electromagnetic clutch for transmitting torque of an engine to the transmission. The transmission has a line pressure control valve having ports and a spoo... | 02/16/1988 |
| 4722250 | Accumulator back pressure control apparatus for automatic transmission An accumulator control device for controlling the back pressure of an accumulator includes an accumulating control valve having a first port communicating with a control oil source and a second port communicating with an accumulator back pressure chamber.... | 02/02/1988 |
| 4721018 | Transmission control having a plurality of speed changing ratios for controlling a transmission system A transmission control device for controlling the operation of a transmission system including a main transmission and a sub transmission comprises a control circuit adapted for effecting a change-over of the main transmission between different speed gear... | 01/26/1988 |
| 4719819 | Power transmission system for a vehicle An improved power transmission system for use with a light saddle-type vehicle with an internal combustion engine of cross-mounted type has an improved construction such that there are provided a split type crank case adapted to be split generally central... | 01/19/1988 |
| 4718305 | Planetary backward and forward drive apparatus There is disclosed a planetary backward and forward drive apparatus comprising a planetary gear mechanism disposed between an input and an output shafts. The planetary gear mechanism includes a carrier connected to the input shaft, two step planet gears s... | 01/12/1988 |
| 4716775 | Transmission having cassette type supplementary change speed apparatus A transmission comprising a main change speed mechanism, an auxiliary change speed mechanism, a rear differential mechanism and a cassette type supplementary change speed mechanism. The supplementary change speed mechanism acts on the transmission through... | 01/05/1988 |
| 4716785 | Playback industrial robot provided with a driving device having an electric motor A playback industrial robot comprises at least one driving device provided with an electric motor having a motor shaft. The driving device comprises a reduction gear mechanism for reducing a rotational speed of the motor shaft of the motor, an output shaf... | 01/05/1988 |
| 4715249 | Speed change device A speed change device that includes an annular ring journaled on the periphery of a swash plate having a plurality of equally spaced radially extending frusto-conical rollers on the periphery thereof adapted to intermittently engage a selectively shaped f... | 12/29/1987 |
| 4715247 | Transmission apparatus with reduced frictional force This invention relates to reduction in frictional torque of a harmonic drive type transmission apparatus having a circular spline, a flexspline, and a wave generator. A wave generator bearing of the wave generator has a retainer for holding a number of ba... | 12/29/1987 |
| 4713980 | Lubrication mechanism in power transfer device for four wheel drive A power transfer device adapted for use in combination with a power transmission. The transfer device includes a housing, an input shaft rotatably mounted within the housing for drive connection to an output shaft of the transmission, an output shaft rota... | 12/22/1987 |
| 4713979 | Transmission with reverse mechanism A transmission includes a forward shift drum and an overlying and coaxial reverse shift drum. The drums are rotatable, but not longitudinally translatable with respect to each other. The drums each include lead grooves for guiding a shift fork pin thereal... | 12/22/1987 |
| 4713985 | Transmission apparatus A transmission apparatus having an annular casing formed integrally, in its inner face, with a plurality of wave-shaped inner teeth, a plurality of drive roll elements rolling along the toothed inner face of the annular casing, a carrier for swingably sup... | 12/22/1987 |
| 4712449 | Apparatus for limiting differential rotation An apparatus is provided for limiting the relative rotation between two drive members, including a differential having two input gears associated with the drive members, a carrier, and two coaxial differential gears carried by the carrier. One differentia... | 12/15/1987 |
| 4709595 | Cruise control system for vehicle A cruise control system for a vehicle having an automatic transmission comprises a vehicle speed sensor for detecting the actual vehicle speed, an engine output power control mechanism, and a vehicle speed controller which compares the actual vehicle spee... | 12/01/1987 |
| 4708032 | Transmission control device having selectable rotation speed detector A transmission control device in accordance with the present invention for controlling a transmission system which is composed of a main transmission and a sub transmission, has a first rotational speed detector which is disposed on the input side of the ... | 11/24/1987 |
| 4704920 | Power transmission device of four wheel drive vehicle An output shaft is disposed in parallel relation to an engine crank shaft. The output shaft is formed with a gear portion. A first drive shaft is formed with another gear portion which is meshed with the gear portion formed on the output shaft, and dispos... | 11/10/1987 |
| 4704922 | Control apparatus for use in a power transmission system of construction vehicles A control apparatus for a power transmission of vehicles such as construction machine having at least one work implement actuated by a hydraulic cylinder unit, a transmission gear with hydraulically operated speed-change clutch, and a torque converter int... | 11/10/1987 |
| 4704921 | Differential gear drive having two output shafts between which there is a limited speed ratio A differential gear drive having two output shafts each coupled through a differential gear train to a common input gear. The differential gear train comprises an annulus gear engaging the input gear, planet gears and a sun wheel. The output shaft is conn... | 11/10/1987 |
| 4702120 | Key-shift transmission In a transmission comprising a plurality of freely rotatable gears on a change-speed shaft, shift keys slidably disposed within the shaft are supported by a shift collar pivotally but non-slidably by an engagement of the keys with the inner circumference ... | 10/27/1987 |
| 4700589 | Coronel radiant drive systems The disclosure discribes an all-gear transmission which recirculates and compounds rotary motion and which results in shift-free progressively accelerated output from a limited RPM input range. A variation of the transmission provides a friction-free all-... | 10/20/1987 |
| 4697478 | Automatic cruise control system for a motor vehicle An automatic vehicle cruise speed control system having an electronic control unit for controlling the engine throttle valve in accordance with the vehicle speed to maintain the speed at a substantially constant value. In an operation on a slope, the tran... | 10/06/1987 |
| 4693143 | Control device for an automatic transmission system A transmission system of the present invention which has a main transmission and a sub transmission includes a first output shaft speed detecting means for detecting the rotational speed of the output shaft of the main transmission and a second output sha... | 09/15/1987 |
| 4691597 | Control system for a four-speed automatic transmission Control device of an automatic transmission having four forward speeds with shifting under torque together with a hydrokinetic torque converter with an integrated torsional damper, and one reverse speed, of the type comprising a planetary gear train contr... | 09/08/1987 |
| 4688450 | Method and system for shift control in an automatic transmission for a vehicle A method and system for shift control in an automatic transmission for a vehicle, wherein, during shifting, engine torque is changed to thereby maintain the shift characteristics satisfactorily, and wherein at least engine torque control in association wi... | 08/25/1987 |
| 4685353 | Transmission and steering system for cross-country vehicle Two-sided drive for a cross-country vehicle provided with an engine and a variable main drive with reversal device coupled to two similar planetary gear units of which: a. the planet bearers of the units are coupled to the out-going shafts of the propulsi... | 08/11/1987 |
| 4683777 | Inhibitor means for a starter device in a multi-transmission motor vehicle An engine starter device for a motor cycle including an engine, a primary transmission having a neutral gear position, and a secondary transmission having a reverse gear position. The engine starter device starts the engine only when the primary transmiss... | 08/04/1987 |
| 4683763 | Rotary motion feed-through apparatus A feed-through apparatus for use in rotating a shaft which typically forms part of a system. The apparatus includes a feed-through shaft which is to be rotated and structure for rotatably mounting the shaft on a panel or wall. A cap rotatably coupled to t... | 08/04/1987 |
| 4682510 | High torque drive means for two closely spaced shafts which are also subjected to strong axial thrusts and application thereof to a double screw extruder An apparatus for rotationally driving two closely spaced shafts comprises a driven gear on each shaft and two drive apparatus for driving each of the driven gears. The shafts are constrained to rotate at the same speed by interengaging teeth of the driven... | 07/28/1987 |
| 4682512 | Power train for heavy lift helicopters A highly efficient ultra-light weight heavy lift helicopter transmission is disclosed herein which, by these very characteristics, allows greater helicopter payloads and gross weights than now can be attained using present state of the art design approach... | 07/28/1987 |
| 4680983 | Transmission direction selection system A drive direction selection system for a vehicle transmission including a source of electrical power, a first circuit for supplying an electrical signal from the source to a forward drive direction engagement means and a second circuit for supplying an el... | 07/21/1987 |
| 4677877 | Accessory drive with band brake A multi-speed accessory drive (10) employing a planetary gear reduction set (12). A cone clutch (89) linked to an output member (84), actuator (200) for moving the cone clutch (89) into engagement with the output pulley (84) and a band brake for selective... | 07/07/1987 |
| 4677880 | Method of controlling automatic transmission in accordance with engine operation A method of controlling a shifting operation of a synchro mesh type automatic transmission in a vehicle, such as an automobile. The method includes the steps of (i) detecting the running state of the vehicle, (ii) determining an optimum gear position from... | 07/07/1987 |
| 4677875 | Transfer case for multiple drive axle vehicle The transfer case comprises differential gearing in the form of a single planetary gear set having an annulus, a first set of planet gears in engagement with the annulus, a second set of planet gears in engagement with corresponding planet gears of the fi... | 07/07/1987 |
| 4676116 | Countershaft transmission A compact countershaft transmission includes three shafts, a plurality of gears, and low, high and reverse clutch assemblies to provide either one or two forward speeds and one reverse speed. The low and high clutch assemblies are arranged along the secon... | 06/30/1987 |
