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:
Aug. 15, 1989
Filed:
Apr. 27, 1987
Applicant:
Inventor:
Hiroaki Ohmuro, Hamamatsu, JP;
Assignee:
Yamaha Corporation, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10D / ;
U.S. Cl.
CPC ...
84419 ;
Abstract
In construction of a timpani, a brake unit is attached to a tonal pitch adjuster unit for balancing moment by head resumption with moment by spring repulsion so that the tonal pitch adjuster unit, i.e. the foot pedal, should be locked against accidental displacement from the position corresponding to the initial stepped angle of the foot pedal due to head striking during performance.