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:
Oct. 18, 1983
Filed:
Jun. 02, 1981
Applicant:
Inventors:
Yoshihisa Mori, Tokyo, JP;
Mitsuru Takashima, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369170 ;
Abstract
A stereophonic pick-up cartridge which has a cantilever having a stylus on a free and thereof and an armature at the rear end thereof, a fixed support and a damper having a first plane surface abutting on the support and a second plane surface abutting on the armature. Grooves are formed in the second plane surface of the damper. The provision of the grooves results in improved isolation between the left and right channels during playback and results in an improved stereophonic pick-up cartridge.