Shock absorber with a check valve and a check valve for a shock absorber

US5518089A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Gunther Handke · Euerbach, DE
• Otto Samonil · Niederwerrn, DE
• Andreas Zietsch · Röthlein, DE

Key dates

• Filing date: Apr 29, 1994
• Grant date: May 21, 1996
• Expiry date: Apr 29, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/465
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A shock absorber with a check valve device and a check valve device for a shock absorber is disclosed. The check valve device located in the bypass of a shock absorber between a high-pressure segment and a low-pressure segment has a check valve which can be moved by an external control into a standby opening status, in which the actual opening can be performed as a function of the pressure prevailing in the high-pressure segment, when the pressure falls below a predetermined value. By coordinating the stroke distance of a check valve body with a magnet armature, and taking into consideration a control chamber discharge cross section, noises and fluctuations of the damping force characteristic can be eliminated even with a very soft comfort setting of the check valve device.