Method of lining a host pipe with a liner using cryogenic coolin

Details Method of lining a host pipe with a liner using cryogenic coolin Method of lining a host pipe with a liner using cryogenic coolin

1992-05-18

1993-10-26

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

29447, 156294, 264 36, 264237, 264269, 264320, 264348, 264229, 425335, B29C 3516, B29C 4346

Patent

active

052563421

ABSTRACT:
A method and apparatus are shown for lining a host pipe with an elastomeric liner having an outside diameter which is initially greater than the inside diameter of the host pipe. A length of the liner is reduced to a downsized outside diameter and the downsized liner is cryogenically cooled to a supercooled state to maintain the downsized dimensions of the liner while increasing the tensile strength to facilitate insertion of the liner into the host pipe.

REFERENCES:
patent: 3429954 (1969-02-01), Atkins et al.
patent: 3959424 (1976-05-01), Dawson et al.
patent: 4207130 (1980-06-01), Barber
patent: 4377335 (1983-03-01), Fannon et al.
patent: 4391028 (1983-07-01), Choudhury et al.
patent: 4573248 (1986-03-01), Hackett
patent: 4956042 (1990-09-01), Hubert et al.
patent: 5114634 (1992-05-01), McMillan et al.

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