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:
May. 21, 2002
Filed:
May. 25, 2000
Philippe G. Castel, Paris, FR;
Jean-Michel Dubus, Port Mort, FR;
Bernard Petin, Claye Souilly, FR;
Joseph M. Genaudeau, Noisiel, FR;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
This brake booster comprises an enclosure ( ), a diaphragm ( ) dividing the enclosure into a front chamber ( ) connected to a source of vacuum and a rear chamber ( ), a piston ( ) that can move axially in the enclosure and on which the diaphragm is mounted, a plunger ( ) mounted so that it can move axially in the piston between a forward unstable braking position and a retreated stable position of rest, and a valve ( ) intended to collaborate with seats ( ) on the piston and on the plunger. The or each seat ( ) on the piston ( ) is formed on the edge of a passage ( ) allowing the said chambers ( ) to communicate.