Music – Instruments – Drums
Patent
1994-06-29
1995-05-02
Gellner, Michael L.
Music
Instruments
Drums
84413, G10D 1302
Patent
active
054109388
ABSTRACT:
In construction of a drum having at least one drum head, the drum head is set in tension, by assistance of a fastening counterhoop, to a suspension ring fixed to one open end of a tubular kettle and a double-type screw unit used for manual fastening of the drum head includes lug nuts mounted to the suspension ring preferably via idle, tiltable engagement and cooperative fastener bolts mounted to the counterhoop in screw engagement with the lug nuts on the suspension ring. Automatic centering is performed by the screw unit during fastening thanks to the idle, tiltable engagement and such automatic centering by the screw unit enables high tension fastening of the drum head without causing any breakages in the screw construction.
REFERENCES:
patent: 4619179 (1986-10-01), Wright
patent: 4833964 (1989-05-01), Prouty
patent: 4869146 (1989-09-01), Bonsor
Gotoh Mitsumasa
Kurosaki Makoto
Gellner Michael L.
Spyrou Cassandra
Yamaha Corporation
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