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US 7,402,739 B2Granted
Method for manufacturing a percussion instrument
AssigneeEddy Allan Balma
InventorsEddy Allan Balma, David Frederick McDevitt
Life of this patent
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Abstract
A method of manufacturing a percussion instrument has the steps of providing a first member into a liquid with the first member having a first diameter. The first member has a first end and a second end. The method also has the step of heating the liquid and stretching the first end of the first member into a second diameter. The method further has the steps of cooling the stretched first end and fitting a skin on the first end.
Claims18
A method of making a shell from a polyvinyl chloride pipe comprising:
- placing said polyvinyl chloride pipe in a heated liquid until said polyvinyl chloride pipe reaches a transition state;
- stretching a first end of said polyvinyl chloride pipe in said heated liquid in a lateral direction relative to a longitudinal axis of said polyvinyl chloride pipe from a first diameter to a second diameter that is larger than said first diameter;
- cooling said shell;
- inserting a mold in said first end of said shell so that an outer edge of said shell contacts an outer periphery of said mold;
- placing said shell and said mold in said heated liquid to smooth an outer surface of said shell;
- and
- placing a bearing member adjacent said outer edge of said shell.
4 more elements
A method of making a shell from a thermo-reactive plastic pipe comprising:
- placing said thermo-reactive plastic pipe in a heated liquid until said thermo-reactive plastic pipe reaches a transition state;
- stretching a first end of said thermo-reactive plastic pipe in said heated liquid in a lateral direction relative to a longitudinal axis of said thermo-reactive plastic pipe from a first diameter to a second diameter that is larger than said first diameter;
- stretching a second end of said thermo-reactive plastic pipe in said boiling liquid in a lateral direction relative to said longitudinal axis of said thermo-reactive plastic pipe to a third diameter that is larger than said first diameter;
- cooling said shell;
- inserting a mold in said first end of said shell so that an outer edge of said shell contacts an outer periphery of said mold;
- placing said shell and said mold in said heated liquid to smooth an outer surface of said shell;
- and
- placing a bearing member adjacent said outer edge of said shell.
5 more elements
Dependencies are inferred from the claim text.