Strap wrench

Tools – Wrench – screwdriver – or driver therefor – Flexible

Patent

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Details

81 343, B25B 1352

Patent

active

049878042

ABSTRACT:
A strap wrench for engaging a workpiece. The strap wrench includes a housing having a first side, a second side, a top and a bottom. A cam means is pivotally mounted in the housing. The cam means has a first end and a second end and, when pivoted, the first end and the second end of the cam means approach the respective sides of the housing. A flexible strap means having a first end, a second end and an intermediate portion is provided. The ends of the strap means are received in the housing, passing through the housing to form a loop in the intermediate portion of the strap means. The cam means may be pivoted to engage the strap means between the respective ends of the cam means and the respective sides of the housing such that the loop in the strap is securely about the workpiece. An opening through the cam means communicates with openings in the top and in the bottom of the housing. A wrenching means may be inserted into opening in the cam means for pivoting the cam means and for moving the workpiece concomitantly with the strap wrench. The cam means further has a bore extending longitudinally from the second end towards the first end of the cam means. A tool may be received in the bore in the cam means to pivot the cam means and to move the workpiece. The cam means may also have grooves thereon to cooperate with grooves on the strap means.

REFERENCES:
patent: 1383123 (1921-06-01), Jones
patent: 1479902 (1924-01-01), Ellison
patent: 2004830 (1935-06-01), Rector
patent: 2656749 (1953-10-01), Johnson
patent: 3728916 (1973-04-01), Brantley
patent: 3962936 (1976-06-01), Lewis
patent: 4506568 (1985-03-01), Aamodt
patent: 4750389 (1988-06-01), Shuster

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