Ring piston seal for a hydraulically controlled disconnect system

US6076645A · kind A · utility

Assignee

• INA Wälzlager Schaeffler oHG · DE

Inventors

• Ludwig Winkelmann · Erlangen, DE
• Harald Peschke · Veitsbronn, DE

Key dates

• Filing date: Sep 3, 1998
• Grant date: Jun 20, 2000
• Expiry date: Sep 3, 2018

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2300/12
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulically controlled disconnect system for a friction clutch of motor vehicles is provided and is constructed as a slave cylinder which includes a pressure housing (2) which is arranged concentrically in relation to a gear box input shaft (3). A guiding sleeve is arranged radially apart from the pressure housing to create a circularly configured pressure chamber (9) in which a ring piston (7) is axially guided and movable. A reinforced seal (8a) on the pressure chamber side of the ring piston (7). The seal (8a) includes sealing lips (14, 15) which are arranged radially spread apart. In accordance with the invention, the reinforcement (18a) of the seal (8a) is held form-locking on the ring piston (7) with a degree of axial and radial freedom.