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:
Jan. 15, 1985

Filed:

Mar. 29, 1982
Applicant:
Inventors:

Casper E van Vroonhoven, Eindhoven, NL;

Keimpe van Wijk, Eindhoven, NL;

Assignee:

U.S. Philips Corporation, New York, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
369147 ; 369146 ; 369170 ;
Abstract

A phonograph pick-up or cutter has a stylus holder carrying a stylus, which cooperates with two transducers, one for each of two orthogonal directions of vibration. Each transducer has a flat coil and an associated magnet having their axes in line. For each transducer the direction of relative movement of the coil to the magnet corresponds to the direction of the coil axis and the magnetic axis. The stylus holder is connected to the moving parts of the two transducers by a coupling member. Preferably, the moving part is arranged on a support connected to the stationary part, to minimize undesired transverse movements.


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van Vroonhoven, Casper. (1985). Stereo phono pick-up and/or cutter (U.S. Patent No. 4494227). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4494227

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

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