Coiled tubing

Details Coiled tubing Coiled tubing

1976-02-26

1977-03-01

Aegerter, Richard E.

Pipes and tubular conduits

Flexible

Braided, interlaced, knitted or woven

138118, 138177, 138DIG7, F16L 1100

Patent

active

040097340

ABSTRACT:
A flexible self-retracting coiled tubing having desirable recoil strength and elastic memory is described. The coiled tubing is adaptable especially as a self-retracting air tube for transmitting fluids under pressure to pneumatic equipment. The coiled tubing comprises an extruded seamless plastic tube prepared by extruding a mixture comprising a chemically extended polyester and from about 10% to about 50% of a polybutylene terephthalate polymer.

REFERENCES:
patent: 2939860 (1960-06-01), Schramm
patent: 3021871 (1962-02-01), Rodgers
patent: 3211473 (1965-10-01), Schmid
patent: 3245431 (1966-04-01), Coe
patent: 3253618 (1966-05-01), Cook
patent: 3253619 (1966-05-01), Cook et al.
patent: 3581778 (1971-06-01), Karejwa

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