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:
Mar. 02, 1976
Filed:
Aug. 21, 1974
Roland Blanz, Heidelberg, DT;
Graubremse GmbH, Heidelberg, DT;
Abstract
A change-over valve including a housing and a slide sealingly guided therein is provided for use with a two-line trailer brake system having two brake circuits. The slide is retained in a normal position, at which supply tubes leading to compressed air supply tanks for the brake circuits are closed, by a piston loaded with compressed air from a supply tube, but is manually movable to a maneuvering position, at which the brakes of the system are released. The slide is provided with two channels and two associated check valves arranged so that when the slide is in the normal position it closes the supply tubes leading to the compressed air supply tanks for the brake circuits and so that when the slide is in the maneuvering position it connects those supply tubes via its channels and the associated check valves to a common space, which is connected to one or more emergency brake chambers for emergency brake pistons of the trailer brake system.