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. 28, 1999
Filed:
Oct. 16, 1995
Tsutomu Yamaguchi, Hamamatsu, JP;
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka-ken, JP;
Abstract
There is disclosed a key support device for a keyboard musical instrument including a plurality of keys and a keyboard chassis. The key support device has a support member for rotatably supporting a rear part of each of the plurality of keys on the keyboard chassis. The keys each have a supporting shaft-receiving recess having an arcuately-walled portion defined by an inner peripheral surface which is arcuate and partially open in cross-section. The support member comprises a supporting shaft part having an arcuate portion which has the same radius of curvature as the arcuately-walled portion of the supporting shaft-receiving recess and a central angle of less than 180 degrees, and a support part extending from the supporting shaft part. By this arrangement, the keys are each supported by the support member in a state of the arcuately-walled portion of the supporting shaft-receiving recess and the arcuate portion of the supporting shaft part being in contact with each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile