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:
Jan. 29, 1980
Filed:
Apr. 03, 1978
Elgin J Karklins, Kettering, OH (US);
Michael L Oliver, Xenia, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
This hydraulic shock absorber has a piston rod guide in the upper end of the pressure cylinder with a conical recess in which a toroidal piston rod seal of elastomer material is trapped under axial compression loads by a seal cover secured to the reservoir tube. The tapered wall of the recess acting on spaced and upwardly extending peripheral ribs of the seal causes the seal body to radially constrict inwardly so that inner annular sealing lips thereof sealingly engage the piston rod of the shock absorber. Oil pressure in pockets formed between the peripheral ribs also exerts a force to constrict the seal for improved sealing.