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:
Aug. 02, 1994
Filed:
Jan. 11, 1993
Eric L Jensen, Dayton, OH (US);
Rachel J Belvo, Miamisburg, OH (US);
Randall L Derr, Bellbrook, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A twin-tube hydraulic damper includes a fluid-filled cylinder tube closed at its lower end by a cylinder end. A piston is slidably mounted in the cylinder tube and divides an interior volume of the cylinder tube into upper and lower chambers. A plurality of intake slots permit fluid to flow from a reservoir to the lower chamber. A plurality of exit flow openings permit fluid to flow from the lower chamber to the reservoir. A cut-off cap is slidably mounted on the cylinder end and sprung away from the cylinder end by a reaction spring. An annular wall formed on the cylinder end receives the cap as the piston engages an activation spring near the travel limit of a compression stroke. Reduced fluid flow through the exit flow openings increases the damping force to reduce harsh impacts.