Apparatus primarily for thawing frozen pipes

Details Apparatus primarily for thawing frozen pipes Apparatus primarily for thawing frozen pipes

1996-04-04

1998-02-10

Scherbel, David

Pipes and tubular conduits

Thawing and freeze protection

Portable thawing apparatus

138 32, 1510461, 134168C, 134167C, 134168R, E03B 714

Patent

active

057158690

ABSTRACT:
Apparatus is provided for thawing frozen pipes or for cleaning pipes, for use with a source of warm thawing water or cleaning water, a source of compressed air, and a flexible tube suitable for being inserted into the end of a pipe through guide means to feed the water into the pipe while the tube is being advanced into the pipe. The apparatus comprises a valved water conduit having an inlet for connection to the source of water and an outlet for connection to the flexible tube, this conduit having a movable valve. A compressed air powered drive, usually a rotator, connectable to said source of compressed air, is arranged to move the valve in such manner as to continually interrupt the flow of water in the conduit and so to produce a pulsating flow of water in the tube for thawing ice in the frozen pipe or cleaning the pipe. The rotator for the valve may be a compressed air driven ratchet drive. A valve may also be provided for injecting air into the pipe to clear out ice or dirt.

REFERENCES:
patent: 4124039 (1978-11-01), St. Laurent
patent: 4250925 (1981-02-01), Mast
patent: 4449553 (1984-05-01), Sullivan et al.
patent: 4773113 (1988-09-01), Russell
patent: 4838768 (1989-06-01), Flaherty
patent: 4905900 (1990-03-01), Scharton et al.
patent: 4986311 (1991-01-01), Mikkelson
patent: 5178684 (1993-01-01), Hutchins, Sr.
patent: 5193587 (1993-03-01), Miller, Jr.

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