Retracting internal tube cutter

Details Retracting internal tube cutter Retracting internal tube cutter

1984-09-26

1986-03-25

Yost, Frank T.

Cutlery

Pipe and rod cutters

Rotary

82 15, B23D 2114

Patent

active

045774064

ABSTRACT:
A retracting internal tube cutter for severing a tube from the interior is disclosed. The tube cutter includes a pair of swing arms mounted for pivotal outward displacement for effecting cutting of the tube. A retractor collar biased by a spring is mounted about the swing arms such that the collar maintains the swing arms in an insertion position except when the cutter is rotated. When the cutter is rotated the arms are forced outwardly causing the retractor collar to retract such that the cutter may sever the workpiece where desired. Upon discontinuance of rotation of the tube cutter, the retractor collar is urged into the insertion position withdrawing the cutter arms from the workpiece such that the tube cutter may be removed from the tube.

REFERENCES:
patent: 1696477 (1928-12-01), Hall et al.
patent: 2736146 (1956-02-01), Brooks
patent: 2805528 (1957-09-01), Barrett
patent: 3283405 (1966-11-01), Braswell
patent: 3358722 (1967-12-01), Berry
patent: 3911574 (1975-10-01), Jones
patent: 4307636 (1981-12-01), Lacey
patent: 4466185 (1984-08-01), Montiero

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