Multimode Clutch - Erkki A. Koivunen

A collection of 50 patents (49 U.S., 1 European) credited to Erkki A. Koivunen, as sole or co-inventor.

Patent Number	Title	Date	Inventor	Assignee	Link
EP0129341A1	Dual Range Compound Drive	December 27, 1984	Co-inventor	General Motors Corporation	View
US3367211A	Transmission	February 6, 1968	Co-inventor	General Motors Corporation	View
US3596537A	Clutch Actuator	August 3, 1971	Co-inventor	General Motors Corporation	View
US3642097A	Automatic Transmission Control	February 15, 1972	Co-inventor	General Motors Corporation	View
US3645172A	Overrunning Clutch with Centrifugal Engaging Means	February 29, 1972	Sole inventor	General Motors Corporation	View
US3653118A	Method of Making a Friction Member	April 4, 1972	Co-inventor	General Motors Corporation	View
US3659480A	Vehicle Power Train	May 2, 1972	Co-inventor	General Motors Corporation	View
US3665707A	Vehicular Transmission Pump Drives	May 30, 1972	Sole inventor	General Motors Corporation	View
US3672731A	Bearing Surface	June 27, 1972	Co-inventor	General Motors Corporation	View
US3684328A	Antifriction Bearing Assembly	August 15, 1972	Co-inventor	General Motors Corporation	View
US3685619A	Dual Speed Mechanical Transmission	August 22, 1972	Sole inventor	General Motors Corporation	View
US3696893A	Brake and Clutch Releaser	October 10, 1972	Sole inventor	General Motors Corporation	View
US3727986A	Direct Pull Hydraulic Ratio Caliper Brake	April 17, 1973	Co-inventor	General Motors Corporation	View
US3771630A	Clutch With Self Adjusting Stop	November 13, 1973	Sole inventor	General Motors Corporation	View
US3779137A	Hydrostatic Slip Control	December 18, 1973	Sole inventor	General Motors Corporation	View
US3800626A	Transaxle Drive System	April 2, 1974	Co-inventor	General Motors Corporation	View
US3810682A	High Pressure Fluid Intensifier	May 14, 1974	Co-inventor	General Motors Corporation	View
US3810715A	Hydrostatic Machine Valve	May 14, 1974	Co-inventor	General Motors Corporation	View
US3814222A	Differential and Brake Assembly with Parking Brake	June 4, 1974	Sole inventor	General Motors Corporation	View
US3838611A	Transmission Having Intermediate Brake	October 1, 1974	Co-inventor	General Motors Corporation	View
US3855987A	Rotary Engine Oil Supply Device	December 24, 1974	Co-inventor	General Motors Corporation	View
US3888228A	Exhaust Gas Sensor Operational Detection System	June 10, 1975	Co-inventor	General Motors Corporation	View
US3890937A	Distributor Drive Mechanism	June 24, 1975	Co-inventor	General Motors Corporation	View
US3905274A	Pneumatic Control System	September 16, 1975	Co-inventor	General Motors Corporation	View
US3907468A	Rotary Engine Oil Tank Vent	September 23, 1975	Co-inventor	General Motors Corporation	View
US3924577A	Accessory Controlled Automatic Transmission	December 9, 1975	Co-inventor	General Motors Corporation	View
US3966032A	Hydrodynamic Drive and Slipping Clutch	June 29, 1976	Sole inventor	General Motors Corporation	View
US4159653A	Torque Equalizing Means	July 3, 1979	Co-inventor	General Motors Corporation	View
US4223569A	Transverse Transmission with Parallel, Coplanar Axis	September 23, 1980	Co-inventor	General Motors Corporation	View
US4237749A	Clutch Assembly	December 9, 1980	Co-inventor	General Motors Corporation	View
US4450735A	Planetary Transmission with a Spring Applied Fluid Released Clutch	May 29, 1984	Co-inventor	General Motors Corporation	View
US4485903A	Centrifugal Actuated Friction Clutch with a Relief Valve	December 4, 1984	Co-inventor	General Motors Corporation	View
US4513631A	Dual Input Clutch Transmission	April 30, 1985	Sole inventor	General Motors Corporation	View
US4514147A	Controlled Reaction Transmission	April 30, 1985	Sole inventor	General Motors Corporation	View
US4539866A	Continuously Variable Transmission	September 10, 1985	Sole inventor	General Motors Corporation	View
US4552545A	Centrifugal Pressure Biased Vane Actuator	November 12, 1985	Co-inventor	General Motors Corporation	View
US4608885A	Multi-Range Transmission	September 2, 1986	Co-inventor	General Motors Corporation	View
US5020556A	Vehicle Traction Control	June 4, 1991	Co-inventor	General Motors Corporation	View
US5031746A	Multi-Mode Clutch	July 16, 1991	Sole inventor	General Motors Corporation	View
US5046997A	Vehicle Transmission with Manually Shifted Lower Gears	September 10, 1991	Sole inventor	General Motors Corporation	View
US5106348A	Bi-Directional Multi-Mode Clutch	April 21, 1992	Sole inventor	General Motors Corporation	View
US5180340A	Guide Mechanism for a Traveling Chain Transmission	January 19, 1993	Co-inventor	General Motors Corporation	View
US5180341A	Derailing Mechanism for a Traveling Chain Transmission	January 19, 1993	Co-inventor	General Motors Corporation	View
US5234381A	Open-Ended Chain for a Traveling Chain Transmission	August 10, 1993	Co-inventor	General Motors Corporation	View
US5281190A	Gear Thrust Control	January 25, 1994	Co-inventor	General Motors Corporation	View
US5588928A	Self-Synchronizing Brake Band Actuating System	December 31, 1996	Sole inventor	General Motors Corporation	View
US5857931A	Traveling Chain Derailer	January 12, 1999	Co-inventor	General Motors Corporation	View
US6029785A	Force Balanced Hydraulic Clutch	February 29, 2000	Sole inventor	General Motors Corporation	View
US6071208A	Compact Multi-Ratio Automatic Transmission	June 6, 2000	Co-inventor	General Motors Corporation	View
US6209802B1	Spinning Wash Nozzle Assembly	April 3, 2001	Co-inventor	General Motors Corporation	View

Erkki Koivunen’s Patents