IP Library Granted Patent US 7,812,236
Granted Patent B1
US 7,812,236 · App. 12/455,770 · Granted Oct 12, 2010

One-piece wooden drum shell formation

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Quick Facts
Patent No.
US 7,812,236
App. No.
12/455,770
Granted
Oct 12, 2010
Kind
B1
Abstract

In the method of producing a drum having a desired tonal quality, including providing a one-piece wooden cylindrical shell, milling the shell bore to reduce shell thickness to a level characterized as associated with a selected drum tone preliminarily produced when the assembled drum having a head or heads is struck with a beater, and tensioning the head or heads to achieve final tonality.

Claims (19)

1. In the method of producing a drum having a desired tonal quality, the steps that include:

a) providing a one-piece wooden cylindrical shell,

b) milling the shell bore to reduce shell thickness to a level characterized as associated with a selected drum tone preliminarily produced when the assembled drum having a head or heads is struck with a beater,

c) forming tapered annular shell ends by removing wood from the shell at said ends, thereby to maintain shell one-piece integrity, said tapers extending at the inner sides of the shell ends,

d) said milling of the bore extends into underlying relation to said taper, thereby to maintain the one-piece wooden integrity of the shell,

e) and tensioning the head or heads to achieve final tonality.

2. The method of claim 1 wherein produced shell wall thickness is one of the following:

i) ⅞ inch,

ii) ¾ inch,

iii) ½ inch,

iv) ⅜ inch.

3. The method of claim 2 wherein the shell thickness prior to said milling is about 1 inch.

4. The drum shell formed by the method of claim 1 .

5. The drum shell formed by the method of claim 2 .

6. The drum shell formed by the method of claim 3 .

7. The method of claim 1 wherein the shell bore is formed to be characterized by one of the following:

i) underlying said tapered ends, which overhang said bore,

ii) underlying the innermost edges of said tapers.

8. The method of claim 1 wherein the shell bore is formed to be uniform between said ends, and shell wall thickness is less than about 1 inch, between said tapered ends.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded May 5, 2017
From: BANK OF AMERICA, N.A.
To: DRUM WORKSHOP, INC.
Reel/Frame 042409/0038 →
SECURITY INTEREST Recorded May 2, 2016
From: DRUM WORKSHOP, INC.
To: OPUS BANK
Reel/Frame 038589/0666 →
RELEASE OF SECURITY INTEREST Recorded Apr 26, 2016
From: ENDEAVOUR STRUCTURED EQUITY AND MEZZANINE FUND I, L.P.
To: DRUM WORKSHOP, INC.
Reel/Frame 038527/0968 →
SECURITY INTEREST Recorded Dec 2, 2015
From: DRUM WORKSHOP, INC. (AS GRANTOR)
To: ENDEAVOUR STRUCTURED EQUITY AND MEZZANINE FUND I, L.P. (AS LEAD PURCHASER)
Reel/Frame 037195/0605 →
SECURITY INTEREST Recorded Mar 11, 2015
From: DRUM WORKSHOP, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 035187/0365 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 5, 2009
From: GOOD, JOHN J.
To: DRUM WORKSHOP, INC.
Reel/Frame 022837/0231 →