Pipe remover

Details Pipe remover Pipe remover

1975-06-02

1977-02-08

Cherry, Johnny D.

Metal working

Means to assemble or disassemble

Tube, sleeve or ferrule

61 63, 175 53, 254 29R, 294 86R, 294 90, B21D 3900, B23P 1904

Patent

active

040065219

ABSTRACT:
A pipe remover for extracting a buried pipe from the ground by pulling an exposed end. The remover includes a grasping dog which engages the exposed end and a pushing dog which engages the buried trailing end. The two dogs are connected by a drawing element. By pulling outwardly on the drawing element, the pulling force is divided between pulling action on one end and pushing action on the other end. The pipe is usually extracted without breaking but, even if it breaks, is pushed through. The pipe may be simultaneously replaced by attaching a new pipe to the trailing end of the pushing dog.

REFERENCES:
patent: 123092 (1872-01-01), Divelbiss et al.
patent: 176201 (1876-04-01), Scott
patent: 867270 (1907-10-01), Himble
patent: 1897561 (1933-02-01), Manucci et al.
patent: 1904666 (1933-04-01), Sack
patent: 2377304 (1945-06-01), Appel
patent: 2613983 (1952-10-01), Knudsen
patent: 2687324 (1954-08-01), Grunsky et al.
patent: 3201944 (1965-08-01), Christensen
patent: 3516143 (1970-06-01), Lewallen
patent: 3744836 (1973-07-01), Goettl

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