Brake master cylinder with axially movable sleeve

US5887432A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Johannes Clauss · Bietigheim-Bissingen, DE
• Martina Richerzhagen · Clausthal-Zellerfeld, DE
• Harry Troester · Tamm, DE

Key dates

• Filing date: Jul 28, 1997
• Grant date: Mar 30, 1999
• Expiry date: Jul 28, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T7/042
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A brake master cylinder with a plunger piston is acted upon by a brake linkage. A floating piston is arranged between two working spaces and separates the first and the second working space fluidically from one another. Each of the two working spaces opens into a main brake circuit, and the floating piston is axially movable in the brake master cylinder. A sleeve is axially movable in the brake master cylinder and is provided at least between the floating piston and the wall of the brake master cylinder. The sleeve and the wall of the brake master cylinder each have an opening which, in interaction, connect the first working space, formed by the floating piston and the plunger piston, to a displacement passage at least in the case of a movement of the floating piston into a first position in the direction of a brake actuation. With a movement of the floating piston beyond the first position, the sleeve is moved axially and separates the first working space from the displacement passage.