The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2011
Filed:
May. 27, 2008
Applicant:
John J. Good, Thousand Oaks, CA (US);
Inventor:
John J. Good, Thousand Oaks, CA (US);
Assignee:
Drum Workshop, Inc., Oxnard, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B27H 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In the method of forming a drum shell that consists of plywood, the steps that includes forming the shell under pressure and heat into cylindrical configuration, providing inner and outer cooling platens adapted to respectively engage the interior and exterior surfaces of the heated shell, trapping the heated shell between the platens, at elevated pressure, allowing the shell to cool by heat transfer from shell side wall or walls into pressure exerting side walls, and while trapped between such platens, at elevated pressure, and removing the cooled shell from between the cooling platens.