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:
Sep. 04, 1990
Filed:
Jan. 31, 1989
Applicant:
Inventors:
Philip Cunningham, Newport, GB;
Stuart J Briggs, Cwmbran, GB;
Assignee:
Lucas Industries public limited company, Birmingham, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
91-1 ; 913691 ;
Abstract
A vehicle brake servo booster has a housing divided into pressure chambers by a movable partition carried by a reciprocable hub member. A switch device is mounted on the housing and operable by an abutment member carried by a reciprocable piston to control an electrical circuit supplying a vehicle rear brake warning light.