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:
Oct. 31, 1995
Filed:
Feb. 17, 1994
Thomas Sasse, Ennepetal, DE;
August Bilstein GmbH & Co. KG, Ennepetal, DE;
Abstract
A shock absorber for an automotive vehicle includes a damping cylinder having a cylinder chamber containing damping fluid; a damping piston axially slidably received in the damping cylinder and dividing the cylinder chamber into first and second work chambers; pressure-responsive valves mounted on the damping piston for controlling the flow of fluid through the damping piston in the pressing and pulling phases; an axially hollow piston rod affixed to the damping piston and extending axially in the damping cylinder; an outer tube coaxially surrounding the damping cylinder and defining an equalizing chamber therewith; and a bottom valve assembly provided in the second work chamber. The equalizing chamber is in communication with the second work chamber through the bottom valve assembly. There are further provided a first bypass channel coupling the first and second work chambers with one another through the hollow piston rod; a second bypass channel coupling the second work chamber with the equalizing chamber by circumventing a bottom valve of the bottom valve assembly; and a setting device for controlling the first and second bypass channels as a function of relative rotary displacements between the damping cylinder and the piston rod.