Tools – Wrench – screwdriver – or driver therefor – Sliding jaw – cam-closing
Patent
1993-06-21
1994-09-27
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Sliding jaw, cam-closing
81 532, B25B 1318
Patent
active
053498879
ABSTRACT:
A tubular pipe wrench for removing and replacing pipes in inaccessible locations includes a generally cylindrical head member having an internal passage large enough to pass the pipe to be worked on and having a cross-sectional configuration like a triangle with greatly rounded corners. A jaw member having teeth is loosely fastened in each of the three corners by bolts which pass through slots in the sidewalls of the head member. Concentric with the head member is a sleeve having ports for receiving the bolts and which maintains the relative spacing of the bolts even though they move radially in the slots. When a pipe is inside of the head member, a slight turning of the head member and sleeve in either direction causes the teeth of the jaw members to make contact with the pipe, moving the jaws into a position where they are wedged between the pipe and the flattened cam surfaces on the inside of the head. Further turning of the sleeve and head will turn the pipe. An extension member which is also cylindrical has a castellated interconnection with the head member. A drive member has a similar castellated interconnection with the extension member and flattened surfaces to be turned with a conventional wrench.
REFERENCES:
patent: 1425359 (1922-08-01), Barry
patent: 2027534 (1936-01-01), Ingersoll
patent: 2574001 (1951-11-01), Weibel et al.
patent: 2580247 (1951-12-01), Secundi et al.
patent: 2681582 (1954-06-01), Valvano
patent: 4932292 (1990-06-01), Merrick
LandOfFree
Tubular pipe wrench does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tubular pipe wrench, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubular pipe wrench will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1259317