Advancing material of indeterminate length – Shiftable part allowing hand loading – With shiftable roller
Patent
1997-03-20
2000-09-19
Mansen, Michael
Advancing material of indeterminate length
Shiftable part allowing hand loading
With shiftable roller
226177, 226186, 166 7751, 2541343FT, 254264, G03B 156, B65H 2000, B66D 100
Patent
active
061199109
ABSTRACT:
A well pump puller having a well casing collar including a coupling adapted to be tightly secured to a well casing and a frame support of legs upstanding from the coupling. A frame which is removably mounted on the support includes first and second u-shaped members pivotally mounted on one of the frame support legs. Wheels with well pipe engaging surfaces are rotatably mounted on each u-shaped member. Locking apparatus are provided for securing the u-shaped members together with the pipe engaging surfaces of the wheels on the u-shaped members above the coupling of the well case collar. A motor transmits power to the wheels on the first u-shaped member, to move well pipe relative to the casing. A crank on the second u-shaped member moves the wheel towards and away from the wheels on the first unshaped member. The frame may be mounted on a stand instead of a well casing collar.
REFERENCES:
patent: 598527 (1898-02-01), Michael
patent: 1387944 (1921-08-01), Price
patent: 2820607 (1958-01-01), Dawes
patent: 3149412 (1964-09-01), Curfman et al.
patent: 3310210 (1967-03-01), Reib
patent: 3376933 (1968-04-01), Burlett
patent: 3871618 (1975-03-01), Funk
patent: 4971293 (1990-11-01), Roberson, Jr.
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