Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Rod or tubular preform
Patent
1981-02-04
1983-01-11
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Rod or tubular preform
249111, B29C 102
Patent
active
043680232
ABSTRACT:
A method of making a curved-tip (coude) catheter which comprises: inserting an end of a flexible, thermoplastic tube into the bore of a closed-end, hollow, tubular die which defines the desired curve of the curved-tip catheter. The tubular die is heated to a temperature above the plastic melt temperature of the thermoplastic tube, while advancing the tube into the die, to cause at least about 0.5 cm. of the tube end to collapse into a generally solid, curved mass. The die and tube contained therein are then cooled to a temperature below the plastic melt temperature, and the tube is withdrawn having a closed, formed coude tip.
REFERENCES:
patent: 2725597 (1955-12-01), Douglass
patent: 2876496 (1959-03-01), Murphy
patent: 3509252 (1970-04-01), Baehr
patent: 3843300 (1974-10-01), McFarlane
patent: 3859408 (1975-01-01), Voss
patent: 4085185 (1978-04-01), Adair
Hannah Richard E.
Lyons Steffen
Baxter Travenol Laboratories Inc.
Caruso John A.
Ellis Garretson
Flattery Paul C.
Pavelko Thomas P.
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