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. 26, 2011
Filed:
Jul. 31, 2008
Charles Horner, South Bend, IN (US);
Robert Spaargaren, Granger, IN (US);
Charles Horner, South Bend, IN (US);
Robert Spaargaren, Granger, IN (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A boosted brake having a booster with a decompression arrangement wherein an output push rod has a head with a plurality of openings that extend into a stem and create a plurality of arcuate grooves. The openings receive a plurality of projections that extend from a piston retained in a sleeve held in a movable partition. A spring acts on the projections and urges the piston into engagement with a reaction disc through which an actuation force is supplied a master cylinder. A predetermined reaction force from the master cylinder acts on piston and overcomes the spring to allow the reaction disc to expand and thereby modify the reaction force. The arcuate grooves in the stem allow for a maximum diameter for spring with a minimum diameter for stem that corresponds to a diameter of piston in order to creates a desired braking in response to an emergency brake application.