Apparatus for making and braking connections between screw threa

Details Apparatus for making and braking connections between screw threa Apparatus for making and braking connections between screw threa

1986-01-09

1987-08-25

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5733, B25B 1700

Patent

active

046884530

ABSTRACT:
An apparatus for making and breaking connections between screw threaded tubular members comprises a jaw carrier. A movable jaw support is pivotally mounted to one end of the jaw carrier while a fixed jaw support is mounted on the other end of the jaw carrier. The fixed jaw support and the jaw carrier each carry a jaw. The centers of the jaws subtend an angle of 90.degree.. The movable jaw support is provided with a jaw which can be advanced towards the other jaws to grip a pipe by the action of a cam on a cam engaging roller mounted on the movable jaw support. The fixed jaw support and the movable jaw support can be interchanged to break and make joints as required.

REFERENCES:
patent: 2618468 (1952-11-01), Lundeen
patent: 3261241 (1966-07-01), Catland
patent: 4192206 (1980-03-01), Schulze-Beckinghausen
patent: 4297922 (1982-11-01), Higdon
patent: 4437363 (1984-03-01), Haynes
patent: 4494425 (1985-01-01), Showmake, Sr.

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