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:
Jul. 11, 1989
Filed:
Aug. 25, 1987
Bernard C Hudgens, West Lafayette, IN (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
An apparatus for damping relative movement of parts. The apparatus includes a cylinder defining a fluid chamber. A piston is located in the fluid chamber and divides the fluid chamber into first and second fluid chamber portions. The piston is connected to one of the parts and the cylinder is connected to the other of the parts. The piston and cylinder move relatively in compression and expansion strokes to damp relative movement of the parts. A fluid reservoir is in fluid communication with the first fluid chamber portion. A first valve controls fluid flow from the first fluid chamber portion into the fluid reservoir upon movement of the piston and cylinder during a compression stroke. A damping control provides a variable damping force resisting movement of the piston and cylinder during an expansion stroke. The damping control includes a second valve movable with the piston for controlling the fluid flow from the second fluid chamber portion to the first fluid chamber portion. The second valve opens by fluid pressure in the fluid second chamber portion. A variable force is applied to the second valve to resist opening of the second valve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile