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:
Mar. 24, 1981
Filed:
Nov. 14, 1978
Applicant:
Inventors:
Atsushi Ohmi, Anjo, JP;
Yoichi Furuta, Gifu, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F15B / ; F01B / ; F16J / ;
U.S. Cl.
CPC ...
9136 / ; 9137 / ; 92 48 ; 92 99 ;
Abstract
A tandem diaphragm brake booster includes first and second diaphragms disposed in a housing and a pair of diaphragm pistons which are axially movable for assisting braking efforts through manual operation. The two diaphragm pistons are connected to each other by a key member which also serves to prevent an air valve from accidentally returning.