Device for expanding heat-shrinkable polymer tubes

Details Device for expanding heat-shrinkable polymer tubes Device for expanding heat-shrinkable polymer tubes

1980-07-01

1982-04-20

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

264503, 264520, 264521, 425392, 425397, 425403, B29C 1707, B29D 2303

Patent

active

043256872

ABSTRACT:
A device for expanding heat-shrinkable polymer tubes includes inlet and outlet chambers coaxially and consecutively arranged for immediate contact in the direction of tube advancement. Each chamber is made up of adjoining bushes having threads at the inner surface thereof. The threads of adjacent bushes of each chamber are of the opposite direction. A group of bushes of each chamber having a common thread direction is provided with an independent rotating drive.

REFERENCES:
patent: 2936491 (1960-05-01), Hamlin
patent: 3018518 (1962-01-01), Jefferys
patent: 3182355 (1965-05-01), Arnaudin
patent: 3201827 (1965-08-01), Reynolds et al.
patent: 3257689 (1966-06-01), Weyer
patent: 3306962 (1967-02-01), Pepper
patent: 3360826 (1968-01-01), Lorang
patent: 3495301 (1970-02-01), Stephens et al.
patent: 3692889 (1972-09-01), Hetrich
patent: 4017244 (1977-04-01), Vellani

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