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:
Nov. 06, 1990
Filed:
Oct. 16, 1987
Masahiko Komatsubara, Yamagata, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A body-sensible acoustic device and an electromechanical vibration converter for use in the same. The body-sensible acoustic device includes frames forming the structure of a chair having a seat and a back, canvas members spread on the frame, and driver units driven by low-frequency audio signals for transmitting vibration to the canvas members. The canvas members are formed of a net of fibers covered with a foamed synthetic resin. The vibration converter includes a drive coil disposed in the air gap of a magnetic circuit, a coil bobbin transmitting motion of the drive coil to the outer case of the converter, and a damper supporting the magnetic circuit on the outer case. A guide hole is formed in the magnetic circuit at its center and extending in the direction of the acoustic axis. A coupling member is fitted in the guide hole having end portions coupled to the outer case.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile