US4800795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic drum with angle adjustment
Assignee: Nippon Gakki Co Ltd
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Filing: 1988-04-11
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Granted: 1989-01-31
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Expires: 2008-04-11
Abstract
Abstract An angle adjusting apparatus for a percussion instrument has a ball member and a seat in slidable contact with the ball member. One of the ball member and the seat is mounted on a musical instrument support member of a musical instrument stand. The other of the ball member and the seat is mounted integrally with a musical instrument housing. Such construction of the angle adjusting apparatus makes a player's angle adjusting work of the percussion instrument easier, so that the player has no need to adjust it in an unnatural posture.
Inventors
- 👤 Toshinori Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:05
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/10; G10D13/26; G10D13/01; G10D13/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
145 words
An electronic drum of a type that is played by a player and is attachable to an instrument stand comprising: a drum body having an upper surface with an opening in a center portion thereof and a peripheral extremity; a drum head disposed over said opening; angle adjusting means mounted on said peripheral extremity of said drum body for adjusting an angular orientation of said drum body comprising a ball housing having a seat, a ball disposed within said ball housing and resting on said seat, a rod having a first end connected to said ball and a second end connected to the instrument stand, and screw means extending through said upper surface of said drum body, said screw means selectively operable by the player for depressing said ball against said seat, thereby preventing movement of said drum body with respect to the instrument stand.
Claim 2
Dependent Claim
145 words
An electronic drum of a type that is played by a player and is attachable to an instrument stand comprising: a drum body having an upper surface with an opening in a center portion thereof and a peripheral extremity; a drum head disposed over said opening; angle adjusting means mounted on said peripheral extremity of said drum body for adjusting an angular orientation of said drum body comprising a ball housing having a seat, a ball disposed within said ball housing and resting on said seat, a rod having a first end connected to said ball and a second end connected to the instrument stand, and screw means extending through said upper surface of said drum body, said screw means selectively operable by the player for depressing said ball against said seat, thereby preventing movement of said drum body with respect to the instrument stand.
Claim 3
Dependent Claim
22 words
An electronic drum according to claim 1, wherein said seat has a spherical portion which is in slidable contact with said ball.
Claim 4
Dependent Claim
15 words
An electronic drum according to claim 2, wherein said spherical portion comprises a semi-spherical portion.
Claim 5
Dependent Claim
20 words
An electronic drum according to claim 3, wherein said spherical portion of said seat has a plurality of radial projections.
Claim 6
Dependent Claim
23 words
An electronic drum according to claim 1 wherein at least one of said ball and said seat is made of an elastic material.
Claim 7
Dependent Claim
24 words
An electronic drum according to claim 5, wherein the material is a material selected from the group consisting of polycarbonate resin and acetal resin.
Claim 8
Dependent Claim
28 words
An electronic drum according to claim 6, wherein the material comprises a material prepared by mixing a fiber material in one of the polycarbonate resin and acetal resin.
Claim 9
Dependent Claim
12 words
An electronic drum according to claim 1, wherein said rod is tubular.
Claim 10
Dependent Claim
19 words
An electronic drum according to claim 8, wherein said drum body and said drum head comprise an electronic drum.
Claim 11
Dependent Claim
24 words
An electronic drum according to claim 9, wherein wiring for connecting said electronic drum to an external circuit is led through said tubular rod.
Claim 12
Dependent Claim
37 words
An electronic drum according to claim 10, wherein a through hole is formed in a wall of said tubular rod and said wiring is led from said external circuit to said electronic drum through said through hole.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |