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:
Oct. 06, 1981
Filed:
Sep. 05, 1979
Applicant:
Inventor:
James H Lucas, Milwaukee, WI (US);
Assignee:
Allis-Chalmers Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ; F16D / ; F16K / ; F15B / ;
U.S. Cl.
CPC ...
192-357 ; 192-362 ; 192 / ; 192 / ; 74481 ; 1375961 ; 13762569 ; 251297 ;
Abstract
A transmission speed range selector valve pressure biased to the high speed range position and spring biased toward the low speed range position. A detent mechanism for retaining the valve in the low speed range arrests the movement of the valve when the pressure of the pressure biasing fluid decreases allowing the spring to move the valve toward the low speed range and thereby downshift the transmission when fluid is throtted to the speed range selector valve.