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:
Jun. 30, 1981
Filed:
Feb. 21, 1980
Applicant:
Inventors:
Shuichi Obata, Kyoto, JP;
Masashi Ito, Settsu, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ; G11B / ;
U.S. Cl.
CPC ...
369256 ;
Abstract
A pickup cartridge and a pickup cartridge mounting device therefor wherein a plug protrusion of tetragonal sectional area is formed at the rear end of a pickup cartridge, a recess of tetragonal sectional area with at least three walls for receiving the plug protrusion is formed at the front end of a tone arm or the like, and after the plug protrusion is inserted into the recess, the protrusion is strongly clamped between two walls of the recess by a mounting screw. Thus, replacement of pickup cartridges is made easy and reliable.