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. 19, 1986
Filed:
Dec. 13, 1984
Harry C Buchanan, Jr, Spring Valley, OH (US);
Wayne V Fannin, Xenia, OH (US);
Byron L Watson, Beavercreek, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
Variable damping apparatus of the fluid pumping type includes an adjustable valve. The valve comprises a stationary plate having a bleed orifice and one or more additional orifices opening axially therethrough, each said additional orifice including a blowoff valve, and a rotatable plate having a bleed orifice and an additional orifice opening axially therethrough, the rotatable plate being disposed adjacent the stationary plate to vary orifice communication with rotation. As the rotatable plate is rotated in opposite directions with respect to the stationary plate away from a position of full communication between the bleed orifices of said plates, the communication of the additional orifices of the plates is varied in a different manner in each rotational direction for equal degrees of communication between the bleed orifices. A rotational actuator is provided to position the rotatable plate with respect to the stationary plate and thus simultaneously select a bleed orifice opening and a blowoff characteristic in response to a signal derived from sensed road characteristics in an adaptive ride control.