Pipe jacks

Details Pipe jacks Pipe jacks

1974-10-07

1976-04-27

Frazier, Roy D.

Buckles, buttons, clasps, etc.

Bale and package ties, hose clamps

With tighteners

24249PP, 254 29R, 279 4, 279106, E21B 1900

Patent

active

039523845

ABSTRACT:
The invention provides a pipe jack for pulling a pipe lengthwise through the ground without the necessity of excavating the ground to create a trench first, the jack including a number of hydraulic rams coupled to a set of jaws, and the jaws being hydraulically displaceable to clamp a pipe disposed between them.

REFERENCES:
patent: 460883 (1891-10-01), Nugent
patent: 1052091 (1913-02-01), Robertson
patent: 1179500 (1916-04-01), Brown
patent: 1391804 (1921-09-01), Steen
patent: 1536413 (1925-05-01), Thrift
patent: 1634422 (1927-07-01), Holmes
patent: 1772210 (1930-08-01), Dale
patent: 1788542 (1931-01-01), Page
patent: 2667356 (1954-01-01), Foward
patent: 2832604 (1958-04-01), Le Brusque
patent: 3149851 (1964-09-01), Adams
patent: 3396980 (1968-08-01), Muller
patent: 3726506 (1973-04-01), Vanderwaal et al.
patent: 3834668 (1974-09-01), Casey
patent: 3861252 (1975-01-01), Stoffels et al.

Affiliated with

Also associated with

Rating

Pipe jacks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pipe jacks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe jacks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1992624