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US 4,754,537 AGranted
Process of making a cloth takeup mandrel
AssigneeBurlington Industries, Inc.
InventorCurtis L. Lee
Life of this patent
Estimating the term…
Abstract
A cloth take-up mandrel is fabricated by cutting pipe of a thermoplastic polymeric material (e.g. PVC) to a desired length, heating the ends of the pipe to a temperature at which the polymeric material softens (as by insertion into a bath of glycerine), inserting end caps into the thus softened pipe ends (having a cross-sectional dimension greater than the dimension of the pipe), and cooling the ends with the end caps inserted therein. The invention avoids problems such as splintering associated with conventional wooden mandrels.
Claims8
A process for fabricating a cloth take-up roll, comprising the steps of:
- (a) heating the end of a pipe fabricated of a thermoplastic polymeric material to a temperature at which said polymeric material softens;
- (b) inserting an end cap into the thus softened end, said end cap having a cross-sectional dimension slightly greater than the inside diameter of said pipe;
- (c) cooling said pipe end;
- and
- (d) repeating said steps (a), (b), and (c) on the other end of said pipe.
2 more elements
Dependencies are inferred from the claim text.