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. 05, 1993
Filed:
Dec. 26, 1991
Jerry M Hill, Brentwood, TN (US);
Other;
Abstract
A wheel alignment apparatus (10) for measuring the toe angles of the wheels (42) of a vehicle such that the wheels (42) may be properly aligned, including vehicles whose rear axle (20) and front axle (22) are of unequal lengths. The wheel alignment apparatus (10) of the present invention includes at least one light beam source (14) for emitting a beam of light (24) toward a photosensor (12). The light beam (24) produces currents at each end of the photosensor (12), the currents then being measured and processed by a signal processor (16) to determine the impinging angle of the light beam (24). Each of the light beam sources (14) and the photosensors (12) are attached to the respective wheels (42) with connecting apparatuses, or heads (18). The photosensor (12) is a lateral photocell for receiving at least a portion of the emitted light beam (24) on a continuous active area (30). The signal processor (16) includes an Analog-to-Digital (A-D) converter (94) for data analysis and storage. Heads (18) are provided for carrying the light beam sources (14) and photosensors (12) and are placed about the vehicle proximate each wheel (42).