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:
Sep. 12, 1978
Filed:
Apr. 11, 1977
Motoi Iyeta, Hamakita, JP;
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
A pickup arm device having a dynamic damper and an adjustable dynamic lateral balancer both of which are provided between the head shell and the fulcrum at which the pickup arm is supported. The dynamic lateral balancer is arranged so that it has a low center of gravity. Accordingly, the lateral balance of the pickup arm does not vary throughout the tracking movement of the pickup arm. Also, the position of the weight pieces of the balancer can be adjusted to obtain the desired reproduction frequency. Furthermore, by the adjustment of compliance and resistance of the damper, it is possible to vary only the resonance peak of the resonance frequency in the low frequency range of the pickup arm device.