Brake force controller for vehicles, particularly automotive vehicles

US4099792A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Walter Schmid · Sindelfingen, DE
• Arno Jambor · Leinfelden, DE
• Karl Wilfert · Gerlingen, DE
• by Thomas Wilfert, legal heir · Markgröningen, DE

Key dates

• Filing date: Aug 30, 1976
• Grant date: Jul 11, 1978
• Expiry date: Aug 30, 1996

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/447
• WIPO field: Transport
• WIPO sector: Mechanical engineering

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.