Music – Instruments – Drums
Reexamination Certificate
2005-06-30
2010-06-15
Qin, Jianchun (Department: 2832)
Music
Instruments
Drums
C428S035700
Reexamination Certificate
active
07737351
ABSTRACT:
A base20made of a steel plate is fasten to a case10made of ABS (acrylonitrilebutadiene-styrene) resin, while a pad30made of adhesive and elastic material such as urethane or olefin is fastened to the top surface of the base20. To the reverse side of the surface of the pad30which is fastened to the base20, i.e., to the side which is hit with sticks there is applied zinc oxide starch powder40. A drumhead configured as described above can maintain flexibility but does not reduce repulsion between the sticks and drumhead.
REFERENCES:
patent: 4330124 (1982-05-01), Vettorello
patent: 5837915 (1998-11-01), Suenaga
patent: 6518490 (2003-02-01), Good
patent: 7196261 (2007-03-01), Suenaga
patent: 2003/0190490 (2003-10-01), Kaya et al.
patent: 0 795 849 (1997-09-01), None
patent: 0 795 849 (1997-09-01), None
patent: 56149351 (1981-11-01), None
patent: H09-244633 (1997-09-01), None
Dickstein & Shapiro LLP
Qin Jianchun
Yamaha Corporation
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