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:
Jun. 24, 1980
Filed:
Oct. 02, 1978
Applicant:
Inventor:
Gene P Baynes, Kettering, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
9136 / ; 60548 ; 60554 ; 9139 / ;
Abstract
A hydraulic brake booster having a mechanical ratio changing mechanism between the booster input rod and one of the booster valve control members. The mechanism includes reaction levers pivotally mounted on the input valve control member and on a support member so that in normal booster operation the levers operate to move the input valve control member at a faster rate than the input rod, while the levers pivot to permit direct mechanical transmission of force from the input rod through the booster when no power or insufficient power is available to operate the booster.