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. 05, 2005
Filed:
Oct. 12, 2001
Ulysse Verbo, Aulnay-sous-Bois, FR;
Jean-marc Attard, Chantilly, FR;
Antony Auguste, Villiers sur Marne, FR;
Ulysse Verbo, Aulnay-sous-Bois, FR;
Jean-Marc Attard, Chantilly, FR;
Antony Auguste, Villiers sur Marne, FR;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A braking device for a motor vehicle, including a master cylinder () with a primary piston () subjected to an actuating force of an input force exerted by a manual operating member () and a boost force exerted by a booster () coupled to the manual operating member () and an emergency assist valve (VA). Valve (VA) comprises: a reaction piston () sliding in a bore () of the primary piston () and urged toward a position of rest by by an elastic return member (); a rapid piston () having a cross section smaller than the reaction piston () and sliding in a sealed manner in a bore () of a bushing () in bore (; and a ratio control () actuated by a plunger distributor () driven by the manual operating member (). The elastic return member () is arranged outside of the primary piston () and a transmission element (T) is provided to transmit a return force of the elastic return member () to the reaction piston ().