Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
Patent
1980-06-20
1983-05-10
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Conduit snakes
B23Q 308
Patent
active
043825818
ABSTRACT:
A cable pulling apparatus includes a winch line on a drum supported on a bed of a vehicle and driven by a motor with a clutch between the motor and drum and a brake associated with the drum. A boom defines a guide for the winch line into a manhole into alignment with an underground conduit and a mandrel is attachable to the winch line. An air gun has one end received into the underground conduit and is expansible into engagement with the conduit and a compressor assembly is attached to the opposite end to propel the mandrel and winch line through the underground conduit. A cable is then attached to the winch line and is drawn through the conduit by driving the drum. A blower and a water pump are also supported on the bed to remove gases and water from the manhole.
REFERENCES:
patent: 2515953 (1950-07-01), Dufresne
patent: 2896911 (1959-07-01), Carpenter
patent: 3160394 (1964-12-01), Hunter et al.
patent: 3179375 (1965-04-01), Hamrick
patent: 3244292 (1966-04-01), Elliott
patent: 3321184 (1967-05-01), Goss
patent: 3463336 (1969-08-01), Mork
patent: 3887163 (1975-06-01), Prange
patent: 3968952 (1976-07-01), Newell
patent: 4213596 (1980-07-01), Inoue
Carlson Daniel C.
Elwood Edward C.
Stewart Eugene T.
Wimer Delbert W.
Burnup & Sims Inc.
Rath Ralph R.
Wagner Robert E.
Watson Robert C.
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