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:
Jun. 29, 1987
James J Kowalik, West Carlton, OH (US);
Kamal N Majeed, Kettering, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A vehicle suspension system has at least one leveling device with a leveling sensor on each side of the vehicle. Leveling action is initiated when a sensor indicates height out of a dead band around the calibrated level for the sensor. Once initiated, leveling action occurs independently for all devices in closed loop to target levels, different for intake and exhaust, which allow overshoot to a common intermediate level, the intermediate level allowing settling to the calibrated level. Order of leveling is rear first with intake before exhaust and then front with exhaust before intake to prevent the rear from falling below the front. Leveling is prevented when the vehicle is not moving but has moved since the last opening of one or more selected vehicle doors.