Patents of the Synthesis Engineering Design Team




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Patent Numbers and Short Descriptions
Patent #5,016,488 Shift mechanism for engaging sliding gear in manual transmission; awarded May 1991. - Patent for a progressive gear shift linkage for a sliding gear engagement and disengagement. - Improves shift feel, reduces engagement effort and improves driver feedback and control. - 14 Claims.
Patent #5,234,389 Releasable overrunning coupling power transmission mechanism acting in cooperation with a friction brake; awarded August 1993. - Patent for a mechanical clutch system and the method for controlling the application and deactivation of the clutch. - Combines the functions of mechanical and friction clutches in greatly reduced package. - 8 Claims.
Patent #5,492,509 Operating range selection of an automatic transmission; awarded February 1996. - Patent for an electro-hydraulic range selection control system in an automatic transmission. - Electronically controlled function of a previously mechanical only system. - 4 Claims.
Patent #5,513,732 Regulation of hydraulic pressure in a system having multiple pressure sources; awarded May 1996. - Patent for pressure regulation and active control of hydraulic fluid for a system having multiple pressure sources. - Improved efficiency, function and control using multi-pump system. - 15 Claims.
Patent #5,696,679 Integrated electronic control of pawl-gear park function of an automatic transmission; awarded December 1997. - Patent for electronic control of a mechanical safety system having redundant and interlocking control features. - Improved operation over a purely mechanical system with added safety and reliability. - 8 Claims.
Patent #5,762,580 Operating range selection of an automatic transmission; awarded June 1998. - Patent for an electro-hydraulic full system range selection and safety interlock system for an automatic transmission. - The practical, full system implementation of shift-by-wire control system logic. - 6 Claims.
Patent #5,826,612 Orifice scheduling ball check valve; awarded October 1998. - Patent for a check valve for use in an hydraulic control circuit used to control flow. - A simpler more responsive system for controlling flow. - 3 Claims.
Patent #6,139,468 Electronically actuated transmission range control system; awarded October 2000. - Patent for a range selection control system in an automatic transmission. - An electo-hydraulic control system with verification redundancy, more system flexibility and full vehicle integration. - 7 Claims.

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