Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner
Patent
1979-08-20
1981-01-27
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Tie rod tensioner
E21B 1900
Patent
active
042470811
ABSTRACT:
A front mounted brace for an underground pipe installer device comprised of a vertically disposed abutment frame, transversely pivotally mounted to a front end portion of an underground pipe installer device, the frame being comprised of upper and lower rails, interconnected by a plurality of vertical struts. Upper and lower front end extensions from the pipe installer pivotally carry the frame.
REFERENCES:
patent: 4000879 (1977-01-01), Martin et al.
Watson Robert C.
Wilson Alfred E.
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