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. 28, 1978
Filed:
Oct. 22, 1976
Motoi Iyeta, Hamakita, JA;
Abstract
On a phonographic disc player, a carriage for supporting a phonographic tone arm is movable along a pair of mutually parallel front and back guide rails and an elongated cover arranged between the guide rails while the position thereof normal to the moving direction being constrained in a precise manner through rolling meshing engagement of at least one of its bottom inside wheels with an associated guide rail, a bottom block extending downwardly from the carriage through the back rim horizontal slit in the cover back being operatively coupled to a servo-driving mechanism which is electrically connected to a given tone arm offset angle detecting circuit. Stabilized posture and movement of the carriage resulting from the above-described meshing engagement and relatively low positioned centers of gravity of the carriage and the tone arm and its related parts minimize undesirable tracking distortion and pressure on the stylus tip and minimum but necessary provision of the slit at a position invisible to the user minimizes possible entry of dust and other extraneous matter and enhances the external appearance of the record player.