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US 4,903,569 AGranted
Drum lug
AssigneeYamaha Corporation
InventorMakoto Kurosaki
Life of this patent
Estimating the term…
Abstract
A drum lug includes a lug case and a lug nut. The lug case is fixed to an outer surface of a drum body. A threaded hole with which the lug bolt is threadably engaged is formed in the center of the lug nut. The lug nut is housed in the lug case with one end portion of the lug nut being exposed outside the lug case. A spot-faced hole communicating with the threaded hole is formed in the center of an outer end face of the lug nut in a predetermined depth. The hole diameter of the spot-faced hole is set to be slightly larger than the major diameter of the threaded hole.
Claims2
A drum lug comprising:
- a lug case fixed to an outer surface of a drum body;
- and
- a lug nut having a threaded hole which is formed in a center thereof and with which said lug bolt is threadably engaged, said lug nut being housed in said lug case with one end portion of said lug nut being exposed outside said lug case,
- wherein a spot-faced hole communicating with said threaded hole is formed in a center of an outer end face of said lug nut in a predetermined depth, and a hole diameter of said spot-faced hole is set to be slightly larger than a major diameter of said threaded hole.
1 more element
Dependencies are inferred from the claim text.