Cutlery – Pipe and rod cutters – Rotary
Patent
1990-05-25
1991-07-23
Watts, Douglas D.
Cutlery
Pipe and rod cutters
Rotary
D26B 1326
Patent
active
050331531
ABSTRACT:
In accordance with the invention, a tool for simultaneously cutting and sizing one of a class of pipe or tubing of selected various inner and outer diameters consists of two intersecting members pivotally connected for relative rotation about the axis of their intersection. The members have at least one pair of mirrored recesses which rotate into and out of face-to-face abutment in a plane passing through the axis of intersection. One such pair of mirrored recesses is provided for each selected outer diameter of pipe or tubing to be cut and sized by the tool. Each pair of mirrored recesses conforms to a cylindrical coutour of diameter substantially equal to its corresponding pipe or tubing outer diameter. At least two cutting wheels are associated with each recess. Each of the wheels are pinned for rotation within either of the members about their own axes which are parallel to the axis of intersection of the members. A portion of each wheel penetrates into its respective recess along at least one half the perimeter thereof and to a depth greater than the thickness of its corresponding pipe or tubing. The wheels of the recesses have their cutting edges disposed in a single plane transverse to the axis of intersection of the members.
REFERENCES:
patent: 2410901 (1946-11-01), Ramsey
patent: 4080733 (1978-03-01), Clegg
patent: 4847997 (1989-07-01), Petty
patent: 4858316 (1989-08-01), Dubey
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