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:
Jul. 11, 1978
Filed:
Aug. 30, 1976
Walter Schmid, Maichingen, DE;
Arno Jambor, Vaihingen, DE;
Karl Wilfert, deceased, LATE OF Gerlingen-Waldstadt, DE;
by Thomas Wilfert, heir, Markgroeningen, DE;
Daimler-Benz Aktiengesellschaft, Stuttgart, DE;
Abstract
Wheel brake apparatus including a brake lining which is moveable into and out of engagement with a brake drum or break disk of a vehicle wheel to be braked. A measuring element is provided for detecting relative movement between the brake lining and the drum or disk. The brake lining is moved by way of a wheel brake piston acted upon by a pressure medium. In order to prevent a lock up of the brake, a controller piston is provided for controlling pressure medium flow to the brake piston in response to the detection of no relative movement between the brake lining and the brake disk or drum, which in turn corresponds to a complete braking action. In preferred embodiments, the controller piston controls a vent line communicating with the front and back of a braking control piston interposed between a master cylinder and the brake lining.