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. 09, 2017
Filed:
Dec. 01, 2011
Marc Rodriguez, Beverley Hills, MI (US);
Olivier Bernadat, Le Perreux, FR;
Laurent Lhuillier, Le Blanc Mesnil, FR;
Marc Noblet, Paris, FR;
Julien Gateau, Gentilly, FR;
Daniel Grech, Lamorlaye, FR;
Carole Charpentier, Montmorency, FR;
Marc Rodriguez, Beverley Hills, MI (US);
Olivier Bernadat, Le Perreux, FR;
Laurent Lhuillier, Le Blanc Mesnil, FR;
Marc Noblet, Paris, FR;
Julien Gateau, Gentilly, FR;
Daniel Grech, Lamorlaye, FR;
Carole Charpentier, Montmorency, FR;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A primary piston composed of a skirt and an intermediate back wall having a rear face receiving the servobrake thrust rod and a forward face for the telescoping rod and the spring pushing the secondary piston. The front of the skirt has longitudinal grooves open in front and closed in the rear. The thickness of the skirt beneath the grooves and the part of the skirt between two successive grooves in the peripheral direction form a front face enabling the principal piston to push the secondary piston. The principal piston is made of a single piece of plastic material.