Torque machines

Details Torque machines Torque machines

1996-10-02

1999-02-02

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5717, 81 5718, 81185, 279 466, 279 467, B25B 1350, B25B 1358

Patent

active

058650733

ABSTRACT:
A torque machine, for making or breaking screw-threaded joints between lengths of pipe, includes a rotatable head having an aperture into which a length of pipe is introduced, the rotatable head including a number of tongs which are spaced apart around the aperture and can be moved inwardly to grip the length of pipe. A separate jaw collar is provided for location between the tongs and the pipe, the collar comprising a number of part-annular sectors which are connected by springs or elastic links so that the collar is expansible to accommodate slight variations in pipe diameter. Collars of different internal diameters are used according to the diameter of the pipes to be joined. The collar may be of aluminium or other comparatively soft material to avoid marking of the pipes.

REFERENCES:
patent: 2459899 (1949-01-01), Stoner
patent: 3008363 (1961-11-01), Cook
patent: 3029673 (1962-04-01), Godsey
patent: 3188101 (1965-06-01), Westberg
patent: 3411796 (1968-11-01), Decker
patent: 3704638 (1972-12-01), Nicholson et al.
patent: 3799010 (1974-03-01), Guier
patent: 4309041 (1982-01-01), Peterson et al.
patent: 4827808 (1989-05-01), Haynes et al.
patent: 5221099 (1993-06-01), Jansch
patent: 5388485 (1995-02-01), Auble

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