Title:
TONE ARM WITHOUT VIBRATION TRANSMISSION
Document Type and Number:
Japanese Patent JPS53120504
Kind Code:
A
Abstract:
A tone arm adapted to be disposed between a head shell and a holder for the tone arm, the tone arm comprising at least one hollow member contacting the head shell or the tone arm support and having an orientation axis extending through the hollow portion of the hollow member where the angle theta between the orientation axis and an arm shaft axis extending between the head shell and the tone arm holder is greater than 0 DEG whereby a mechanical vibration introduced into the tone arm from a vibration source comprising either the head shell or the tone arm holder is divided between two paths both of which start at the contact point between the hollow member and the vibration source and then pass around the respective sides of the hollow member to a cancellation point where the vibrations in the two paths substantially cancel one another due to difference in their direction of travel.
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Inventors:
NAKATSUKA HISAYOSHI
Application Number:
JP3562077A
Publication Date:
October 21, 1978
Filing Date:
March 30, 1977
Export Citation:
Assignee:
NAMIKI PRECISION JEWEL CO LTD
International Classes:
G11B3/10; G11B3/31; (IPC1-7): G11B3/10