US4356757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Musical drum construction
Assignee: Individual
•
Filing: 1980-05-19
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Granted: 1982-11-02
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Expires: 2000-05-19
Abstract
Abstract The new musical drum construction is disclosed which comprises a cylindrical sleeve disposed coaxially within a drum shell such that there is a small space between the outer edge of the sleeve and the inner edge of the drum shell. The sleeve is secured in place by rings at each end which extend between the edge of the sleeve and the edge of the drum shell. The drum heads are attached only to the shell, permitting the sleeve to resonate with the heads. This has been found to produce a distinctly clearer, more solid sound than other drums.
Inventors
- 👤 Michael G. Mooy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:35
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/10; G10D13/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
A musical drum comprising: a cylindrical shell; a cylindrical inner sleeve, wherein said inner sleeve is of slightly less diameter and height than said shell, the sleeve being of a material and construction to resonate when the drum head is stuck; flexible means for disposing the sleeve coaxially within the shell and allowing radial and axial movement of said sleeve so that there is a space between the inner sleeve and the shell of generally uniform width; a drum head disposed over an open end of the shell; and means securing the drum head onto the shell; wherein said disposing means comprises two circular rings disposed between said shell and said drum head, said rings having an inner portion and an outer portion, said inner portion of each of said ring being fixedly connected to an edge of said sleeve and said outer portion of each said ring having a flanged projection which extends over an edge of said shell, said rings being movably secured thereby to said shell whereby said rings may vibrate independently of said shell.
Claim 2
Dependent Claim
178 words
A musical drum comprising: a cylindrical shell; a cylindrical inner sleeve, wherein said inner sleeve is of slightly less diameter and height than said shell, the sleeve being of a material and construction to resonate when the drum head is stuck; flexible means for disposing the sleeve coaxially within the shell and allowing radial and axial movement of said sleeve so that there is a space between the inner sleeve and the shell of generally uniform width; a drum head disposed over an open end of the shell; and means securing the drum head onto the shell; wherein said disposing means comprises two circular rings disposed between said shell and said drum head, said rings having an inner portion and an outer portion, said inner portion of each of said ring being fixedly connected to an edge of said sleeve and said outer portion of each said ring having a flanged projection which extends over an edge of said shell, said rings being movably secured thereby to said shell whereby said rings may vibrate independently of said shell.
Claim 3
Dependent Claim
29 words
A musical drum according to claim 1 wherein said rings extends at an angle radially and axially from the edge of said sleeve to the edge of said shell.
Claim 4
Dependent Claim
33 words
A musical drum according to claim 1 wherein the edges of said shell are configured such that they form a sharp ridge about the outer perimeter of the shell and depend inwardly therefrom.
Claim 5
Dependent Claim
32 words
A musical drum according to claim 1 wherein a small opening is provided in the sleeve and shell so as to allow air communication between the inside and outside of the drum.
Claim 6
Dependent Claim
18 words
A musical drum according to claim 1 wherein said sleeve and rings are composed of thin plastic material.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |