Pipe puller

Details Pipe puller Pipe puller

1995-11-09

1997-07-15

Kramer, Dean

Handling: hand and hoist-line implements

Grapple

Expanding

B66C 156

Patent

active

056476272

ABSTRACT:
The present invention relates to a pipe puller which grips the inner bore of the pipe to be installed. A tapered, threaded, expandable gripping member is inserted into the bore of the pipe. The gripping member is turned clockwise which then expands the gripping member so that the gripping member is placed in contact with the inner surface of the pipe. A hollow cylinder is also placed over the pipe and gripping member to protect the end of the pipe as it is pulled through the ground. The pipe puller is pulled through the ground by a motive device attached to the end of the pipe puller shaft.

REFERENCES:
patent: 1474886 (1923-11-01), Boyce
patent: 2687324 (1954-08-01), Grunsky et al.
patent: 3709546 (1973-01-01), Vaughan
patent: 3915489 (1975-10-01), Murphy
patent: 4746158 (1988-05-01), Fields
patent: 5094496 (1992-03-01), King, Sr.
patent: 5439264 (1995-08-01), Margiottiello
Ditch Witch, 255SX Vibratory Plow, Feb., 1995.
Condux International Inc., Pulling Eye, 1995.

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