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Inventor:
Kuramochi; Koujiro
Address:
Okazaki, JP
No. of patents:
26
Patents:












Patent Number Title Of Patent Date Issued
5029493 Hydraulic control device in automatic transmission in vehicle equipped with electronic throttle July 9, 1991
In a vehicle in which opening of an intake throttle valve is controlled in accordance with stepping-on amount of an accelerator pedal by way of an electronic throttle opening control device, a hydraulic pressure control device is provided so as to detect a discrepancy between the steppin
4974696 Power transmission device for four wheel drive vehicles December 4, 1990
A differential motion limiting device, for a power transmission device for four wheel drive vehicle, to regulate differential motion of a center differential device includes a wet-type multi plate clutch and an hydraulic actuator. And a switching valve is attached to an oil passage to
4866935 Hydraulic torque converter September 19, 1989
In a hydraulic torque converter having a torus of flatness ratio (L/H) within the range 0.82-0.9, the outer and inner contours of the turbine in a meridional plane through the axis of the turbine each comprises a combination of a plurality of circular arcs, wherein the ratios between
4858646 Hydraulic pressure control device for clutch for controlling drive torque distribution in four w August 22, 1989
The hydraulic pressure for operating the two wheel drive/four wheel drive switchover clutch in the part-time type four wheel drive device or the central differential lock-up clutch in the full-time type four wheel drive device is produced by a combination of a pressure regulation valve a
4839041 Magnetic oil strainer June 13, 1989
A strainer is mounted in an oil passage within a valve body constituting the hydraulic control unit of an automatic transmission. The strainer includes a frame (4) fitted into the oil passage, a reticulate member (5) secured to the frame (4) so as to form a barrier across the oil passage
4836050 Transverse type automatic transmission with two separate lay shaft elements June 6, 1989
An automatic transmission includes a fluid torque converter and a first and second gear transmission mechanisn, each of which has two coaxial drive members--a power input member and a power output member--and is selectable to any one of several speed radios. Rotational power is output fr
4817472 Transmission control system with protection against excessively high speed downshifting April 4, 1989
In an automatic transmission control system incorporating the conventional line, throttle, and governor fluid pressure regulation valves, mannual selector valve, and shift valves such as 1/2, 2/3, and 3/4 shift valves, there is further incorporated a modulator fluid pressure control valv
4783960 Fluid torque converter with axially cut away stator inner shell November 15, 1988
A torque converter includes a coaxially mounted pump impeller, turbine, and stator, each of which includes an outer shell, an inner shell, and vanes extending between the outer shell and the inner shell having edges which define an inlet and outlet. The pump impeller outlet is proximate
4768633 Torque converter lock up clutch rotary shock absorber with inner plate element location construc September 6, 1988
A rotary power transmission device including a hydraulic torque converter which transmits rotary power between coaxial power input and power output shafts, and a lock up clutch system which also transmits rotary power between the power input and power output shafts, wherein the lock up
4739678 Oil separating structure of automatic transmission April 26, 1988
A four wheel drive automatic transmission, comprising: a speed-changing transmission unit; a front wheel transmission mechanism driven by the transmission unit and having a large driving gear and bearings for the large driving gear; a center differential unit having an input member d
4683903 Governor valve August 4, 1987
A governor valve for a hydraulic controller in an automatic transmission, which is disclosed herein, comprises an adapter having a line pressure supply bore made therethrough, a cylindrical governor rotary shaft loosely fitted into the adapter sleeve and having a line pressure supply por
4645441 Internal-gear pump with partition plate having a chamfered edge February 24, 1987
An internal-gear pump with a partition plate, comprising: an arcuate chamfer formed at an inner edge of an end face of the partition plate rotationally opposing an inner gear of the pump and having a curvature at least greater than that of tooth tip edges of the inner gear.
4441594 Fluid type torque converter apparatus April 10, 1984
A lockup clutch of a fluid type torque converter apparatus is disposed in parallel to a fluid type torque converter and directly connects an input shaft and an output shaft to each other. The lockup clutch comprises first and second disc elements disposed midway of a drive force transmis
4440276 Torque converter lock up clutch shock absorber with pressure transmitting hole through disk elem April 3, 1984
A rotary power transmission device including a hydraulic torque converter which transmits rotary power between coaxial power input and power output shafts, and a lock up clutch system which also transmits rotary power between the power input and power output shafts, wherein the lock up
4437358 Transmission with torque converter and lock up clutch with lubrication and pressurization system March 20, 1984
An automatic transmission includes: a gear transmission mechanism which can provide several speed stages according to selective supply of hydraulic pressures from a control system; a hydraulic fluid pump; a torque converter incorporating a lock up clutch which is selectively engaged or
4428259 Fail safe automatic transmission lock up clutch control system January 31, 1984
An automatic transmission includes a gear transmission mechanism with first and second friction mechanisms which are alternatively engaged by alternative supply of first and second actuating pressures thereto when the highest speed stage and the next to highest speed stage are altern
4428258 Transmission control system with modified back pressure accumulator January 31, 1984
A fluid pressure control system for controlling an automatic transmission which includes a gear transmission mechanism and several fluid pressure actuated friction engaging mechanisms, selective engagement of which provides various speed stages from the gear transmission mechanism. A lin
4427098 Torque transmission apparatus including direct coupling clutch and fluid-type torque converter January 24, 1984
In a torque transmission apparatus of an automatic transmission for an automotive vehicle, a direct coupling clutch is provided in parallel to a fluid type torque converter. The direct coupling clutch comprises; a first clutch element connected to an input shaft or an output shaft; a fir
4426891 Radially outward return spring for transmission brake January 24, 1984
A transmission has a gear mechanism which is selected between speeds by selective engagement of a brake including first and second friction plate elements. A piston is driven by pressure in a fluid pressure chamber so as selectively to squeeze the friction plate elements together and eng
4406181 Automatic transmission control system with holddown device September 27, 1983
An automatic transmission includes a gear transmission mechanism with several friction engaging mechanisms. Selective supply of actuating pressure to these mechanisms selectively provides different speed stages from the transmission, including a directly connected speed stage and an
4406179 Apparatus for preloading an antifriction bearing in an automatic transmission September 27, 1983
In a transmission for automobiles including; a housing containing planetary gear units respectively having at least three revolving elements, such as ring gears, sun gears and a carrier; an input shaft connected to one of the revolving elements of the planetary gear units, and an output
4399895 Torque converter lock up clutch rotary damper with reinforcing lips August 23, 1983
A rotary power transmission device includes a torque converter, which transmits rotary power between coaxial power input and power output shafts, and a lock up clutch between the power input and power output shafts, which includes first and second plate elements which can be biased t
4394827 Transmission control system with modified friction engaging mechanism actuating pressure July 26, 1983
A fluid pressure control system for controlling an automatic transmission which includes a gear transmission mechanism and several fluid pressure actuated friction engaging mechanisms, selective engagement of which provides various speed stages from the gear transmission mechanism. A lin
4391166 Hydraulic fluid pressure control system for an automatic transmission July 5, 1983
In an automatic transmission for vehicles which has a fluid torque converter, a lock-up clutch for directly connecting the input and output members of the torque converter when pressure is supplied to its pressure chamber, and a gear transmission mechanism which has several hydraulic
4380179 Engagement device in automatic transmission April 19, 1983
In an automatic transmission including sun gears, ring gears and a carrier for rotatably supporting a pinion on a shaft, the pinion being adapted to mesh with the sun gear and the ring gear; the improvements comprising a hub extending radially outside of the ring gear and having a fricti
4356742 Transmission control system providing overlapped shift line combinations November 2, 1982
A fluid pressure control system for controlling an automatic transmission, which includes a gear transmission mechanism and several fluid pressure actuated friction engaging mechanisms, and which is shifted to various speed stages including an overdrive speed stage, a directly connected










 
 
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