US4522006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum and drum body formed from adhered, solid blocks of wood
Assignee: Individual
•
Filing: 1983-06-13
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Granted: 1985-06-11
•
Expires: 2003-06-13
Abstract
Abstract A drum with a body composed of solid wood blocks glued together. The blocks form a cylinder which constitutes the drum body with each block extending the entire thickness of the cylinder wall. The blocks lie in circular layers with each layer having a staggered orientation relative to its adjacent layers. Dowels pass through the blocks to provide greater support to the body. The upper and lower edges of the cylinder have a recessed configuration relative to the body's outer surface to provide a floating drum head. To produce the drum body, each block in a layer has its ends tapered toward the middle of the block. Where each layer includes 16 blocks, the end faces of a block have an angle of 22.5° relative to each other. Gluing the blocks together forms a long cylinder having, however, rough external and internal surfaces. Milling on both the outside and the inside of the cylinder provides smooth surfaces of a pleasing appearance. Drilling holes through the length of the cylinder allows for the placement of the dowels, also then glued to the blocks. Slicing the cylinder into sections produces several drum bodies which then have their edges finished to a sharp ridge to support the drum head.
Inventors
- 👤 Keith A. Plikuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:14
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/10; G10D13/22; B; B27; B27M; B27M3/00; B27M3/0013; B27M3/008
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
91 words
A drum comprising: (A) a plurality of solid wood blocks permanently adhered to each other, said adhered blocks forming a solid surface having the shape of a cylinder with two open ends, each of said blocks extending from the inside to the outside of said cylinder, each of said two ends of said cylinder defining a substantially flat plane; (B) a drum head in contact with one of said ends of said body; and (C) stretching means, coupled to said head, for retaining said head under pressure against said one end.
Claim 2
Dependent Claim
91 words
A drum comprising: (A) a plurality of solid wood blocks permanently adhered to each other, said adhered blocks forming a solid surface having the shape of a cylinder with two open ends, each of said blocks extending from the inside to the outside of said cylinder, each of said two ends of said cylinder defining a substantially flat plane; (B) a drum head in contact with one of said ends of said body; and (C) stretching means, coupled to said head, for retaining said head under pressure against said one end.
Claim 3
Dependent Claim
16 words
The drum of claim 1 wherein said outside of said cylinder has a substantially smooth surface.
Claim 4
Dependent Claim
16 words
The drum of claim 2 wherein each of said blocks is in a substantially unstressed condition.
Claim 5
Dependent Claim
49 words
The drum of claim 2 wherein said substantially flat planes defined by each of said two ends of said cylinder lie substantially parallel to each other and said blocks are arranged in a plurality of layers with each of said layers lying substantially parallel to said substantially flat planes.
Claim 6
Dependent Claim
23 words
The drum of claim 4 wherein the grain of the wood of each of said blocks is substantially undisturbed from its natural condition.
Claim 7
Dependent Claim
19 words
The drum of claim 5 wherein each of said blocks is formed from a single integral piece of wood.
Claim 8
Dependent Claim
16 words
The drum of claim 6 wherein the inside of said cylinder has a substantially smooth surface.
Claim 9
Dependent Claim
23 words
The drum of claim 7 wherein at least a portion of said blocks have a box joint between them at their common surfaces.
Claim 10
Dependent Claim
24 words
The drum of claim 6 wherein the grain in substantially all of said blocks lies in the plane of the layer containing the block.
Claim 11
Dependent Claim
38 words
The drum of claim 5 including a plurality of dowels each passing through a plurality of said layers in a direction substantially perpendicular to said flat planes, said dowels being spaced apart from each other around said cylinder.
Claim 12
Dependent Claim
38 words
The drum of claim 10 wherein each of said blocks is formed from a single integral piece of wood and the grain in substantially all of said blocks lies in the plane of the layer containing the block.
Claim 13
Dependent Claim
25 words
The drum of claim 11 wherein the blocks of one of said layers has a staggered orientation relative to the blocks of any adjacent layer.
Claim 14
Dependent Claim
25 words
The drum of claim 12 wherein the layers at each of said two ends has a greater thickness than the other layers in said body.
Claim 15
Dependent Claim
64 words
The drum of claim 12 wherein, on a cross-sectional plane passing transversely to said flat planes and passing through the center of said cylinder, at least one of the ends of said cylinder, passing from said surface on the inside of said cylinder toward the outside of said cylinder makes an angle of 45° relative to a normal passing through said substantially flat planes.
Claim 16
Dependent Claim
25 words
The drum of claim 14 wherein said cylinder, at said ends, defines a smaller area than the outer surface of said cylinder intermediate said ends.
Claim 17
Dependent Claim
45 words
The drum of claim 15 wherein, on said cross-sectional plane, at least one of the ends of said cylinder, passing from said surface of said cylinder on the outside toward the inside of said cylinder makes an angle of about 22° relative to said normal.
Claim 18
Dependent Claim
32 words
The drum of claim 12 wherein the faces of each of said blocks lying adjacent to other blocks in the same layer make an angle of about 22.5° relative to each other.
Claim 19
Dependent Claim
26 words
The drum of claim 12 wherein the outside surface of said cylinder is substantially straight from one of said ends to the other of said ends.
Claim 20
Dependent Claim
20 words
The drum of claim 12 wherein the outside surface of said cylinder bows outwardly in the area between said ends.
Claim 21
Dependent Claim
16 words
The drum of claim 12 wherein said blocks are adhered to each other with an adhesive.
Claim 22
Dependent Claim
116 words
The drum of claim 2 wherein: (A) each of said blocks is formed from a single integral piece of wood; (B) each of said blocks is in a substantially unstressed condition; (C) said substantially flat planes defined by each of said two ends of said cylinder lie substantially parallel to each other and said blocks are arranged in a plurality of layers with each of said layers lying substantially parallel to said substantially flat planes; (D) the grain of the wood of each of said blocks is substantially undisturbed from its natural condition and lies in the plane of the layer containing the block; and (E) said blocks are adhered to each other with an adhesive.
Claim 23
Dependent Claim
38 words
The drum of claim 21 wherein a plurality of dowels each passing through a plurality of said layers in a direction substantially perpendicular to said flat planes, said dowels being spaced apart from each other around said cylinder.
Claim 24
Dependent Claim
26 words
The drum of claim 22 wherein the outside surface of said cylinder is substantially straight from one of said ends to the other of said ends.
Claim 25
Dependent Claim
20 words
The drum of claim 22 wherein the outside surface of said cylinder bows outwardly in the area between said ends.
Claim 26
Dependent Claim
134 words
The drum of claim 22 wherein: (A) on a cross-sectional plane passing transversely to said flat planes and passing through the center of said cylinder, at least one of the ends of said cylinder, passing from said surface on the inside of said cylinder toward the outside of said cylinder makes an angle of 45° relative to a normal passing through said substantially flat planes; (B) on said cross-sectional plane, at least one of the ends of said cylinder, passing from said surface on the outisde of said cylinder, toward the inside of said cylinder makes an angle of about 22° relative to said normal; and (C) wherein the faces of each of said blocks lying adjacent to other blocks in the same layer make an angle of about 22.5° relative to each other.
Claim 27
Independent Claim
60 words
A method of making a drum body comprising: (A) adhering together a plurality of solid wood blocks having substantially flat faces to form a solid surface having the shape of a cylinder with two open ends, with each of said blocks extending from the inside to the outside of said cylinder; and (B) smoothing the outer surface of said cylinder.
Claim 28
Independent Claim
60 words
A method of making a drum body comprising: (A) adhering together a plurality of solid wood blocks having substantially flat faces to form a solid surface having the shape of a cylinder with two open ends, with each of said blocks extending from the inside to the outside of said cylinder; and (B) smoothing the outer surface of said cylinder.
Claim 29
Dependent Claim
30 words
The method of claim 26 wherein the step of adhering together said plurality of solid wood blocks is accomplished at least in part through applying an adhesive between said blocks.
Claim 30
Dependent Claim
42 words
The method of claim 27 further including the step, after said solid wood blocks are adhered together, of drilling a plurality of holes through said surface of said cylinder from one end to the other and thereafter placing dowels into said holes.
Claim 31
Dependent Claim
30 words
The method of claim 28 including, after placing said dowels into said holes, slicing said cylinder into segments along planes substantially parallel to one of said two substantially flat planes.
Claim 32
Dependent Claim
66 words
The method of claim 28 wherein said flat planes are parallel to each other and said blocks are adhered together in layers lying substantially parallel to said two flat planes and with the grain in each of said blocks substantially undisturbed from its natural condition and the grain in each of said blocks substantially parallel to said planes, and said blocks in a substantially unstressed condition.
Claim 33
Dependent Claim
31 words
The method of claim 30 wherein, prior to adhering said blocks together, two opposing end of said block are cut to have an angle, relative to each other, of about 22.5°.
Claim 34
Dependent Claim
28 words
The method of claim 31 further including, after said blocks are adhered together, removing a portion of the outer surface of said cylinder at both of said ends.
Claim 35
Dependent Claim
83 words
The method of claim 32 wherein said removed portion leaves behind an angle between said end and the remaining portion of said outer surface of about 22° relative to a normal passing through said end and further including the step of removing a portion of the inner surface of said cylinder at both of said ends, the removing of said portion leaving behind an angle between said end and the remaining portion of said inner surface of about 45° relative to said normal.
Claim 36
Dependent Claim
33 words
The method of claim 33 including adhering blocks at said ends with a greater thickness in the direction of said normal than the blocks in any of the other layers in said cylinder.
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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |