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:
Jan. 03, 1984
Filed:
Jun. 23, 1981
Applicant:
Inventor:
Lucas H Haar, Niddatal, DE;
Assignee:
ITT Industries, Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B / ; F16J / ;
U.S. Cl.
CPC ...
9136 / ; 9137 / ; 92 9 / ; 9216 / ;
Abstract
In order to reduce the forces transmitted by the reaction device of a vacuum brake booster, there is provided a first booster piston directly connected to the booster's output member and a second booster piston of smaller size acting solely on the reaction device. Both booster pistons are controlled by a control valve carried by the second booster piston. The second booster piston is arranged inside an internal cylindrical sleeve penetrating the first booster piston and interconnecting the transverse end walls of the booster housing.