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:
May. 09, 1989
Filed:
Nov. 16, 1987
Wayne V Fannin, Xenia, OH (US);
William C Kruckemeyer, Xenia, OH (US);
Scott R Kloess, Rochester Hills, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An oil pressurized telescoping actuator for active ride vehicle suspension having a folded dual piston design with an inner piston stroking within the rod of an outer piston to foreshorten overall length. A special universal joint provided for a larger tolerance so that three bearing surfaces encounter will not encounter binding. The upper mount accommodates the upper end of the actuator with extends therethrough to further foreshorten the unit. The entire unit is jacketed to provide a reservoir connected to a drain line so that leakage oil can be pressurized by a pump into the system for pressurized feed into the actuator for powered expansion and contraction of the actuator for level ride for all vehicle maneuvers.