Method of making a shock absorber and a shock absorber made by the method

US5524871A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Horst Muller · Florstadt, DE
• Karl Hofmann · Neckarrems, DE
• Frank Ilzig · Schweinfurt, DE
• Werner Baloun · Arnstein, DE
• Ludwig Gampl · Schwanfeld, DE
• Norbert Vockentanzer · Schweinfurt, DE
• Gunther Hochrein · Poppenlauer, DE
• Karel Kriz · Schweinfurt, DE

Key dates

• Filing date: Nov 14, 1994
• Grant date: Jun 11, 1996
• Expiry date: Nov 14, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/43
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Process for the filling of a piston-cylinder unit, for example a shock absorber, with compressed gas and for closing the gas chamber of the piston-cylinder unit with a sealing element in the form of a base. The piston-cylinder unit is placed in an apparatus which apparatus can be connected to a compressed gas source from which the gas chamber is filled. The base is inserted by the apparatus into the open end of the piston-cylinder unit, after which the piston-cylinder unit, now under pressure and closed off by the base, is closed by, the process of welding.