The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 22, 1994

Filed:

Jun. 02, 1993
Applicant:
Inventors:

Robert C Downs, Clarkston, MI (US);

Kyle K Kinsey, Highland, MI (US);

Assignee:

Saturn Corporation, Troy, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05G / ; G05G / ;
U.S. Cl.
CPC ...
74535 ; 74575 ; 7457 / ; 7457 / ; 192 / ; 188 31 ; 188 69 ;
Abstract

A countershaft type power transmission has a plurality of selectively engageable friction clutches for establishing a plurality of forward drive ratios and a reverse drive ratio between meshing gear members on an input shaft, a countershaft and an output shaft. One of the power paths established by the meshing gears includes a gear member rotationally fast on the output shaft. A parking pawl member is selectively engageable with this gear member to prevent output shaft rotation when parking is desired. The pawl has teeth formed thereon having a profile which permit continuous simultaneous engagement between two teeth on the pawl and two teeth on the gear member regardless of the rotational bias imposed on the output shaft during parking.


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