Apparatus for producing bent pipe of reinforced synthetic resin

Details Apparatus for producing bent pipe of reinforced synthetic resin Apparatus for producing bent pipe of reinforced synthetic resin

1976-08-25

1978-03-21

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

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

Rod or tubular preform

425390, B29C 1700

Patent

active

040801411

ABSTRACT:
A bent pipe of reinforced synthetic resin is produced by supporting a flexible and elastic tubular mandrel in a stiff and straight position, forming layers of fiber impregnated with thermo-hardening synthetic resin about the mandrel, releasing the mandrel from the straightly stiffened position, bending the mandrel in the desired curvature, heat hardening the synthetic resin, and then extracting the mandrel from the bent pipe thus formed and hardened.

REFERENCES:
patent: 3753635 (1973-08-01), Barnett
patent: 3890079 (1975-06-01), Slater
patent: 3922134 (1975-11-01), Kupfrion
patent: 4009982 (1977-03-01), Maier

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