Handling: hand and hoist-line implements – Grapple – Well type
Patent
1994-10-24
1997-07-01
Kramer, Dean
Handling: hand and hoist-line implements
Grapple
Well type
294 8625, E21B 3112, B66C 110
Patent
active
056429126
ABSTRACT:
The present invention is directed to an attachment for a plastic pipe, usually polyethylene pipe, to a head for pulling the pipe into a sewer or other utility line. The present invention is also directed to a slip lining head. More specifically, the present invention is directed to a slip lining head which includes the unique attachment for a plastic pipe used in the repair/replacement of sewer and other utility lines.
REFERENCES:
patent: 1145125 (1915-07-01), Davis
patent: 1163561 (1915-12-01), Schildwachter
patent: 1721024 (1929-07-01), Krell et al.
patent: 1739601 (1929-12-01), Marble
patent: 1751998 (1930-03-01), Hinderliter
patent: 4648746 (1987-03-01), Abinett
patent: 5029924 (1991-07-01), Stuckey
patent: 5094496 (1992-03-01), King, Sr.
patent: 5197773 (1993-03-01), Vick, Jr.
Kramer Dean
TTI Trenchless Technologies, Inc.
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