1987-04-27
1989-08-15
Hix, L. T.
Music
Instruments
Drums
G10D 1304
Patent
active
048564060
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.
REFERENCES:
patent: 1054009 (1913-02-01), Ludwig
patent: 1755569 (1930-04-01), Strupe
patent: 2276846 (1942-03-01), Jeffries
patent: 3021743 (1962-02-01), Ludwig
patent: 3163075 (1964-12-01), Toperzer, Jr.
Brown Brian W.
Hix L. T,.
Yamaha Corporation
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