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:
Jun. 14, 2005
Filed:
Sep. 17, 2003
Juan Simon Bacardit, Barcelone, ES;
Bruno Berthomieu, Barcelone, ES;
Fernando Sacristan, Barcelone, FR;
Juan Simon Bacardit, Barcelone, ES;
Bruno Berthomieu, Barcelone, ES;
Fernando Sacristan, Barcelone, FR;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A servobrake () including a pneumatic brake booster () and a master cylinder () with a main piston () that slides in a front pressure chamber (). The main piston () has a fixed first rear end () acted on by a pneumatic piston () of the booster () and a moving second rear end () acted on by a feeler () of the booster () that is a coaxial with the piston () and acts upon a reaction ram () to communicate pressure forces in a front pressure chamber () of the master cylinder to the second end (). A hydraulic isolation valve shutter (), independent of the internal piston () of the ram (), is activated when the input force of the booster () exceeds a given rate threshold so that the braking force is not reduced.