The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 1991
Filed:
Jun. 07, 1990
Felix Wossner, Schweinfurt, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
According to an illustrative example of the invention, an impact damper comprises two telescopically arranged tubes. Working chambers are defined within the tubes, and a fluid is contained within the tubes. The fluid biases the tubes towards a relative rest position. This rest position is defined by abutments of both tubes. In case of impact, the tubes are moved with respect to each other, and damping fluid is urged through a damping orifice between adjacent working chambers. In case of excessive temperature, the pressure of the fluid within the telescopic tubes is raised so that the pressure of the damping fluid is also raised. This raising pressure may result in a metallic sealing through abutment of the tubes. This metallic sealing may prevent the escape of damping fluid such that the pressure can rise up to a dangerous level. For limiting the pressure rise, an emergency escape passage is provided across the location of abutment.