Lining of passageways

Details Lining of passageways Lining of passageways

1981-03-03

1983-05-31

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

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

Including shaping means comprising fluid pressure contacting...

156287, 156294, 156423, 264 36, 264516, 425 11, B29C 1707, B32B 110

Patent

active

043858856

ABSTRACT:
The invention provides that a flexible liner is everted into a passageway to line same using liquid under pressure. The liner is fed through an enclosure before it everts and eversion is achieved by pressurization of the liquid in the enclosure. The feed of the liner through the enclosure is preferably controlled by the drivable feed rollers through a nip of which the liner passes. The rollers preferably have projections which engage the liner positively to engage the liner. The invention has particular applicability to the placement of liners which although flexible and evertible when being installed, set hard when in position lining the passageway.

REFERENCES:
patent: 2608405 (1952-08-01), Salfisberg et al.
patent: 3132062 (1964-05-01), Lang et al.
patent: 4064211 (1977-12-01), Wood

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