US4589323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum muffler
Assignee: Remo Inc
•
Filing: 1983-04-29
•
Granted: 1986-05-20
•
Expires: 2003-04-29
Abstract
Abstract This invention relates to a sound altering device for a drum comprising a shell, head fastening means and a head with a playing surface and a rim. The sound altering means comprising a circular base with at least one aperture, and a rim mounting means integral with circular base, the rim mounting means being adapted to fit over the edge of the shell so that the circular base is suspended underneath the playing surface, the rim mounting means being adapted to be held between the edge of the shell and the rim.
Inventors
- 👤 Remo Belli
- 👤 Donald R. Hartry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:58
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/02; G10D13/10; G10D13/14; G10D13/03
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
89 words
A sound altering means for a drum comprising a shell, head fastening means and a head with a playing surface and a rim, the sound altering means comprising: a circular base with at least one aperture; and a rim mounting means integral with the circular base, the rim mounting means being adapted to fit over the edge of the shell so that the circular base is suspended underneath the playing surface, the rim mounting means being adapted to be held between the edge of the shell and the rim.
Claim 2
Dependent Claim
89 words
A sound altering means for a drum comprising a shell, head fastening means and a head with a playing surface and a rim, the sound altering means comprising: a circular base with at least one aperture; and a rim mounting means integral with the circular base, the rim mounting means being adapted to fit over the edge of the shell so that the circular base is suspended underneath the playing surface, the rim mounting means being adapted to be held between the edge of the shell and the rim.
Claim 3
Dependent Claim
26 words
A sound altering means as recited in claim 1 further comprising muffling means held between the underneath side of the playing surface and the circular base.
Claim 4
Dependent Claim
68 words
A sound altering means as recited in claim 2 wherein the muffling means comprises a rigid member and a sound absorbing material mounted within the interior of the shell, the rigid member being affixed to the fastening means, the sound absorbing material comprising a foam biased against the underside of the playing surface and at least partially compressed between the rigid member and underside of the playing surface.
Claim 5
Dependent Claim
19 words
A sound altering means as recited in claim 3 wherein the sound absorbing material is of a non-uniform thickness.
Claim 6
Dependent Claim
19 words
A sound altering means as recited in claim 3 wherein the sound absorbing material is of a non-uniform density.
Claim 7
Dependent Claim
37 words
A sound altering means as recited in claim 3 wherein the sound absorbing material is in the shape of a circular disc substantially the same diameter as the underside of the playing surface and of uniform thickness.
Claim 8
Dependent Claim
25 words
A sound altering means as recited in claim 3 wherein the sound absorbing material is in a shape other than that of a circular disc.
Claim 9
Dependent Claim
28 words
A sound altering means as recited in claim 1 wherein the sound altering means is capable of harmonically altering the overtones of the drum without reducing the sound.
Claim 10
Dependent Claim
18 words
A sound altering means as recited in claim 1 wherein the circular base has a plurality of apertures.
Claim 11
Dependent Claim
18 words
A sound altering means as recited in claim 1 further comprising an insert with at least one aperture.
Claim 12
Dependent Claim
110 words
A sound altering means for a drum comprising a shell, head fastening means and a head with a playing surface and a rim, the sound altering means comprising affixation means comprised of a circular support and a rim mounting means integral with the circular support, the rim mounting means being adaptable to fit over and grip an edge of the shell so that the circular support is suspended underneath the head, the rim mounting means being adapted to be held between the edge of the shell and the rim said circular support being rigid and having at least one aperture which at least partially reduces the overtones of the drum.
Claim 13
Dependent Claim
110 words
A sound altering means for a drum comprising a shell, head fastening means and a head with a playing surface and a rim, the sound altering means comprising affixation means comprised of a circular support and a rim mounting means integral with the circular support, the rim mounting means being adaptable to fit over and grip an edge of the shell so that the circular support is suspended underneath the head, the rim mounting means being adapted to be held between the edge of the shell and the rim said circular support being rigid and having at least one aperture which at least partially reduces the overtones of the drum.
Claim 14
Dependent Claim
26 words
A sound altering means as recited in claim 11 further comprising an insert with at least one aperture suspended by the circular support underneath the head.
Claim 15
Dependent Claim
115 words
A sound altering means for a drum comprising a shell, head fastening means and a head with a playing surface and a rim, the sound altering means comprising: affixation means removably connected to the shell comprised of a circular support and a rim mounting means integral with the circular support, the rim mounting means being adaptable to fit over and grip an edge of the shell so that the circular support is suspended underneath the head, the rim mounting means being adapted to be held between the edge of the shell and the rim; said circular support being rigid and, having at least one aperture which at least partially reduces the overtones of the drum.
Claim 16
Dependent Claim
115 words
A sound altering means for a drum comprising a shell, head fastening means and a head with a playing surface and a rim, the sound altering means comprising: affixation means removably connected to the shell comprised of a circular support and a rim mounting means integral with the circular support, the rim mounting means being adaptable to fit over and grip an edge of the shell so that the circular support is suspended underneath the head, the rim mounting means being adapted to be held between the edge of the shell and the rim; said circular support being rigid and, having at least one aperture which at least partially reduces the overtones of the drum.
Claim 17
Dependent Claim
108 words
A drum, comprising a circular playing surface, a rim, the outer circumference of the playing surface being affixed to the rim, a shell, fastening means for removably mounting the rim to the shell, and sound modifying means removably mounted to the shell beneath the rim wherein the sound modifying means comprises a circular base with at least one aperture and rim mounting means integral with the circular base, the rim mounting means being adapted to fit over the edge of the shell so that the circular base is suspended underneath the playing surface, the rim mounting means being held between the edge of the shell and the rim.
Claim 18
Dependent Claim
108 words
A drum, comprising a circular playing surface, a rim, the outer circumference of the playing surface being affixed to the rim, a shell, fastening means for removably mounting the rim to the shell, and sound modifying means removably mounted to the shell beneath the rim wherein the sound modifying means comprises a circular base with at least one aperture and rim mounting means integral with the circular base, the rim mounting means being adapted to fit over the edge of the shell so that the circular base is suspended underneath the playing surface, the rim mounting means being held between the edge of the shell and the rim.
Claim 19
Dependent Claim
29 words
A drum as recited in claim 14 wherein said sound modifying mean further comprises muffling means held between the underneath side of the playing surface and the circular base.
Claim 20
Dependent Claim
24 words
A sound altering means as recited in claim 15 wherein the muffling means is comprised of a sound absorbing material of a non-uniform thickness.
Claim 21
Dependent Claim
22 words
A drum as recited in claim 15 wherein the muffling means is comprised of a sound absorbing material of a non-uniform density.
Claim 22
Dependent Claim
40 words
A drum as recited in claim 15 wherein the muffling means is comprised of a sound absorbing material in the shape of a circular disc substantially the same diameter as the underside of the playing surface and of uniform thickness.
Claim 23
Dependent Claim
25 words
A drum as recited in claim 15 wherein the muffling means is comprised of a sound absorbing material in a shape other than a circle.
References Cited (Backward Citations)
US609068A
Cited
US614694A
Cited
US570693A
Cited
US2285269A
Cited
US2499616A
Cited
US3105406A
Cited
US3250169A
Cited
US3264927A
Cited
US3435723A
Cited
US3433115A
Cited
US3453924A
Cited
US4154137A
Cited
US4226156A
Cited
US4244266A
Cited
US4246825A
Cited
US4325280A
Cited
US4325281A
Cited
US4338850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |