Shock absorber

US5477949A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Andreas Forster · Schweinfurt, DE
• Hubert Beck · Eitorf, DE

Key dates

• Filing date: Mar 31, 1994
• Grant date: Dec 26, 1995
• Expiry date: Mar 31, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/364
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A piston rod guide is provided for a shock absorber assembly, wherein the piston rod guide has a reflux passage for returning damping fluid back to the annular space formed between the cylinder walls of the shock absorber. The reflux passage is configured in a manner such that the returning damping fluid is returned to the annular space in a manner which substantially reduces foaming of the damping fluid within the cylinders.