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.

Date of Patent:
Oct. 18, 1977

Filed:

Nov. 01, 1976
Applicant:
Inventor:

Werner Fidi, Baden, OE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; H04R / ; H04R / ;
U.S. Cl.
CPC ...
1791 / ; 1791 / ; 1791 / ; 274 37 ;
Abstract

A sound pickup, for tracking mechanically modulated grooves in a record support by means of a tracing stylus, includes a stylus holder elastically mounted, at its center of motion, in a bearing element of rubber or rubber-like material. A small metal plate is embedded in the bearing element to extend perpendicularly to the longitudinal axis of the stylus holder, and has a central opening therein. The stylus holder passes through the central opening and the diameter of the central opening is slightly larger than the external diameter of the stylus holder in the zone of its passage through the central opening. The thickness of the plate is small relative to such external diameter of the stylus holder, and the stylus holder is connected to the plate only through the bearing element. The bearing element is preferably a body of revolution extending to either one or both sides of the plate, with the plate being situated in the plane of the largest diameter of the bearing element, and the bearing element has a passage extending therethrough coaxial with the central opening in the plate and with the diameter less than that of the central opening in the plate.


Find Patent Forward Citations

Fidi, Werner. (1977). Mounting of pickup stylus (U.S. Patent No. 4054758). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4054758

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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