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.
Patent No.:
Date of Patent:
Apr. 20, 1976
Filed:
Nov. 25, 1974
Applicant:
Inventor:
James C Polak, Indianapolis, IN (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74759 ;
Abstract
A planetary transmission having three substantially equal size simple planetary gear sets, two selectively operable clutches and three selectively operable brakes for providing four forward and two reverse speed ranges. The forward and reverse low ranges provide high torque multiplication for high tractive effort while the other forward ranges permit close step ratios for traveling speed operation of the vehicle.