Drum
AssigneeYamaha Corporation
InventorTakashi Hagiwara
Life of this patent
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Abstract
In a drum in which a drum head installed on one or both of open ends of a trunk main body that constitutes a drum main body of the drum is tightened by lug bolts and stretched by a hoop, reinforcing rings are provided in anchoring holes that are formed in the hoop for receiving bolt heads of the lug bolts.
Claims1
A drum in which a drum head which is installed on at least one of open ends of a trunk main body that constitutes a drum main body of said drum is tightened by means of a lug bolt and stretched by means of a hoop, wherein reinforcing rings are provided in anchoring holes that are formed in said hoop for receiving a bolt head of said lug bolt.
Dependencies are inferred from the claim text.