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:
Nov. 18, 2008
Filed:
Mar. 06, 2007
Nicolas Savagner, Le Mesnil Eudes, FR;
Thierry Maille, Rocques, FR;
Alain Fantazi, Dives sur mer, FR;
Nicolas Savagner, Le Mesnil Eudes, FR;
Thierry Maille, Rocques, FR;
Alain Fantazi, Dives sur mer, FR;
Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH, Munich, DE;
Abstract
A combined service brake and spring brake cylinder for the braking system of a motor vehicle, in particular for utility vehicles, includes service and spring brake pistons guided inside a casing which is common for the two brake cylinders. The spring brake piston is loaded by at least one storage spring and has an external diameter greater than that of the service brake piston. The spring brake piston is in the form of an annular piston, and at least a part of the rod thereof is constructed in the form of a piston tube, which surrounds the service brake piston and forms an external radial running and sealing surface therefor.