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:
Sep. 25, 1979
Filed:
Mar. 24, 1978
Donald E Graham, Centerville, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An optical switching arrangement including at least one light source connected in a cyclically completed and interrupted electrical energizing circuit and a pair of photosensitive signal generating devices optically coupled thereto through a shuttering arrangement operated by the sprung mass of a motor vehicle produces, when the sprung mass is above and below a predetermined trim band, respective first and second logic signal pairs, each of which is stored until the next different pair is produced. Electrical circuitry responsive to these logic signal pairs produces respective sprung mass high and low signals to which a leveling system is responsive to level the sprung mass within the predetermined trim band. Respective accumulator circuits accumulate the time each of the sprung mass high and low signals is present to effect the inhibiting of the production of each of these signals at the conclusion of a respective predetermined period of time and each is reset to zero upon each occurrence of the opposite one of these signals.