Seal for a work cylinder operated by pressurized fluid

US5246237A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Helmut Gottling · Altwarmbüchen, DE
• Rudolf Moller · Gehrden, DE
• Gerhard Scharnowski · Gehrden, DE
• Norbert Fortmann · Hannover, DE

Key dates

• Filing date: Apr 8, 1992
• Grant date: Sep 21, 1993
• Expiry date: Apr 8, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/3236
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A seal for a work cylinder operated with pressure fluid, through which cylinder an axially displaceable coupling element connected with the work cylinder, particularly a pull means, is extended in a fluid-tight manner from the inside of the cylinder. To obtain a better sealing of the inside of the cylinder under all possible operating conditions, particularly when using coupling elements developed as pull means of a cross-sectional shape other than circular, the seal is comprised of a single cup-shaped piece, the bottom surface of the seal being provided with a cuff which tapers conically in axial direction towards the cup-shaped inside of the seal. The cuff is provided with a sealing opening which permits the passage of the coupling element therethrough. The seal is provided with a sealing ring on the outer periphery in the region of the open end.