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:
Apr. 08, 1980
Filed:
Nov. 17, 1978
Michael D Cunnell, Salisbury, GB;
John S Forrester, Halesowen, GB;
Lucas Industries Limited, Birmingham, GB;
Abstract
A headlamp levelling system for a road vehicle, comprises an electric motor which, in use, drives a member coupled to the headlamp so as to allow the headlamp to be adjusted in a manner to vary the direction of the light beam emitted, in use, by the headlamp. The motor is connected across the terminals of an electrical supply by way of an electrical circuit including switch means and a plurality of spaced pairs of electrical contacts. The switch means has a plurality of switch positions, one for each of said pairs of contacts, and a bridging member is associated with said pairs of contacts. The contacts and the briding member undergo relative movement in response to movement of said driven member so that the bridging member bridges said pairs of contacts, in turn, in respective discrete positions of the driven member and hence of said headlamp. The electrical circuit is arranged so that when said switch means is moved from one switch position to a further switch position, current is fed from said supply to said motor to move said driven member until said bridging member bridges the pair of contacts associated with said further switch position, whereupon the supply of current to the motor is terminated.