Hydraulic brake system with slip control

US4732429A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Juan Belart · Walldorf, DE
• Wolfram Seibert · Darmstadt, DE
• Norbert Ocvirk · Offenbach, DE
• Juergen Schonlau · Eltville am Rhein, DE
• Guenter Trach · Offenbach, DE

Key dates

• Filing date: Sep 8, 1986
• Grant date: Mar 22, 1988
• Expiry date: Sep 8, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T13/145
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A hydraulic brake system with slip control comprising a master cylinder (2) pressurizable by a hydraulic power booster (1). A booster sleeve (52) is provided which annularly encloses the booster piston (4), and which is slidably accommodated in the booster housing. The sleeve's end face directed towards the pressure chamber (10) of the booster (1) is applied by the pressure in the pressure chamber (10), while an annular chamber (59) filled with pressure medium and connected to a brake circuit (32) is constituted between the booster sleeve (52) with its head portion (61) and the bore (60) in the booster housing. The booster sleeve (52) is coupled to the booster piston (4) by way of a circlip (53) such that, on movement of the booster piston (4) in the direction of brake actuation, the booster sleeve (52) and the booster piston (4) will displace uniformly. On failure of the booster (1) and displacement of the booster piston (4) exclusively by way of the brake pedal (8), the booster sleeve (52) will remain in its initial position which brings about an abrupt change in ratio.