Arrangement of fluid pressure passageways in cylinder devices

US4401293A · kind A · utility

Assignee

• WABCO Steuerungstechnik GmbH · DE

Inventors

• Gerhard Rodewald · Ronnenberg, DE
• Detlef Opel · Haste, DE
• Walter Brausfeld · Hannover, DE
• Helmut Gottling · Altwarmbüchen, DE
• Hans-Friedrich Meyer · Gehrden, DE
• Rudolf Moller · Gehrden, DE

Key dates

• Filing date: Sep 24, 1981
• Grant date: Aug 30, 1983
• Expiry date: Sep 24, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8671
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An arrangement wherein fluid pressure passageways opening into inner chambers of a cylindrical housing of a valve device, are formed between abutting faces of two axially aligned cylindrical portions comprising the housing. The opening or passageway between the abutting faces is formed by complementarily engaging saw-like teeth formed around the annular abutting faces of the two housing portions. This arrangement provides a smoother surface over which the sealing gasket on a valve member must ride, thus resulting in less wear and tear on the gasket.