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:
Jul. 11, 1978
Filed:
Dec. 06, 1976
Larry Dean Huff, Indianapolis, IN (US);
RCA Corporation, New York, NY (US);
Abstract
An automatic wiping apparatus, provided for a disc record player, comprises a pad supported on a free end of an elongated leaf spring. The other end of the leaf spring is angularly secured to a housing support attached to the underside of a lid of the player, such that when the lid is closed the pad will be urged into contact with the surface of a disc supported on a turntable provided in the player. A rigid frame is pivotally mounted to the housing support, and is provided with a first member for supporting the free end of the leaf spring in a raised state, precluding contact between the pad and the disc surface, in response to the string force of a tongue spring acting on a second member of the rigid frame. A one-way pawl pivotally mounted to the rigid frame cooperates with an actuating arm attached to a signal pickup carriage in the player, such that the rigid frame is pivoted against the spring bias of the tongue spring, for a portion of the translational travel of the signal pickup carriage from a standby position to playback positions, thus removing the first member from its supporting position and thereby allowing the pad to come into contact with the surface of the disc solely under the spring force of the leaf spring.