Method of refurbishing thermoplastic drums
AssigneeDowling & Son, Inc.
InventorsVirgil E. Dowling, Ray P. Richard, Samuel G. Dowling, Johnny M. Seago
Life of this patent
Estimating the term…
Abstract
A method and apparatus for repairing or refurbishing thermoplastic drums, by which a damaged drum, or at least a damaged portion thereof, is heated until it reaches a softened state and is then drawn over a template, or mold, having the substantially the same shape and size of an undamaged drum. The drum is allowed to cool sufficiently to return to its hardened state, whereby it substantially assumes the shape of the template. The refurbished drum is then removed from the template and is essentially ready to be used again.
Claims18
A method for refurbishing a damaged thermoplastic drum, said method comprising:
- heating at least one damaged portion of the drum until said portion becomes softened;
- drawing said drum over a template for said drum whereby said at least one damaged, softened portion is forced to conform to the exterior of said template;
- allowing the at least one damaged, softened portion of said drum while on said template to harden sufficiently to assume the shape of said template;
- and
- removing said drum from said template.
A method of refurbishing a damaged thermoplastic drum, said method comprising:
- immersing said drum in a liquid having a temperature greater than the softening point of said drum until at least the damaged portions of said drum reach a softened state;
- drawing said drum over a template for said drum, whereby the damaged portions of said drum are forced to conform to the exterior of said template;
- cooling said drum while on said template until said damaged portions of said drum reach a sufficiently hardened state to assume the shape of said template;
- and
- removing said drum from said template.
Dependencies are inferred from the claim text.