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:
Jul. 21, 1981
Filed:
Apr. 04, 1979
Applicant:
Inventor:
Satoru Satoh, Matsuyama, JP;
Assignee:
Jidosha Kiki Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F15B / ;
U.S. Cl.
CPC ...
9137 / ; 92 48 ;
Abstract
A tandem type power servo booster including a housing having front and rear shells with front and rear pistons within the housing. The rear piston is coupled to a valve and an inner cylindrical member extends from the valve with the front piston secured to it. A push rod is inserted into the cylindrical member and a bias spring is also disposed therein. The front piston and the cylindrical member are formed from pressed metal and the inner diameter of the cylindrical member is larger than an outer diameter of the recessed portion.