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:
Feb. 26, 1980
Filed:
Nov. 22, 1978
David T Carolus, Dayton, OH (US);
Ralph W Edwards, Dayton, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An antenna cable drive and storage drum is driven by an electric motor to extend and retract a cable during a predetermined number of revolutions of the drum. A reaction switch, sensitive to drum rotation forces occurring at full extension or retraction, controls motor stoppage at the fully extended and retracted positions. A rotatable gear member supported on a stationary member is driven by a single tooth on the drum. In the event that the normal cable reaction load is not present, the drum continues to rotate beyond the full extension or retraction point such that an interference condition occurs between the gear member and the single tooth resulting in a high reaction load on the drum causing actuating of the reaction switch to discontinue operation of the motor.