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:
Jul. 17, 1979
Filed:
Jul. 13, 1978
Applicant:
Inventor:
Hitoshi Matsuda, Tokyo, JP;
Assignee:
Nippon Columbia Kabushikikaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
1791 / ; 1791 / ;
Abstract
A pickup cartridge composed of a cantilever, a plate-shaped armature and a magnet or magnetic material. The plate-shaped armature is pivotally mounted to the cantilever and stretched backward by a suspension wire through a damper disposed in front of the magnet or magnetic material. A holding means is disposed at the rear of the damper and includes a magnet with north and south poles. Coils are mounted on the armature. The magnetic flux which passes through the coils passing in the direction of the axes of the coils, but not parallel to the direction determined by a line between the north and south poles of said magnet, produces a linear push-pull output.