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:
Apr. 13, 2010
Filed:
Oct. 31, 2007
Ignacio Diaz Bueno, La Celle Saint Cloud, FR;
Christian Ast, Rueil Malmaison, FR;
Christian Caquet, Courtry, FR;
Jean-pierre Michon, Saint Pathus, FR;
Ignacio Diaz Bueno, La Celle Saint Cloud, FR;
Christian Ast, Rueil Malmaison, FR;
Christian Caquet, Courtry, FR;
Jean-Pierre Michon, Saint Pathus, FR;
Robert Bosch GmbH, , DE;
Abstract
The invention relates to a tandem pneumatic brake booster () for a vehicle. The objective is to prevent a blocking of a booster thrust rod () in the maximum travel position. The blocking appears following a sealed adhesion of a first plate skirt () on a seal () of the tandem booster. This seal blocks a vacuum in a first front chamber (). To prevent this blocking, provision is made to crenelate a first lip () pressed against the pneumatic piston () of a seal. Merlons prevent a sealed adhesion of the plate skirt () over the whole seal (). This absence of adhesion creates a leakage of air to the first front chamber () and allows a return to a rest position.