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:
Feb. 04, 1986
Filed:
Dec. 10, 1984
Rolf Weiler, Sindlingen, DE;
Reimund Becht, Frankfurt-Hoechst, DE;
Peter Boehm, Frankfurt am Main, DE;
ITT Industries, Inc., New York, NY (US);
Abstract
Differential pressure brake boosters are known having a reinforcement tube extending axially through the low-pressure casing with its ends fastened to both end surfaces of the casing. A mechanically actuated control valve for connecting the working chamber to the low-pressure chamber or to atmosphere is axially movable in the reinforcement tube. A sleeve surrounding a master cylinder piston push rod has radial ribs extending through longitudinal slots of the reinforcement tube to connect the push rod to the movable wall. These ribs are subjected to a high bending stress. According to the present invention the radial ribs are constructed as flat tongues disposed in a common plane, the tongues being engaged on a side thereof adjacent the low-pressure chamber by an outwardly angled collar of an extension of the housing of the control valve. The distance between the rolling diaphragm of the movable wall adjacent the reinforcement tube and the end of the longitudinal slots adjacent the work chamber is at least equal to half the power stroke of the axially movable wall.