Circular hole cutter

Details Circular hole cutter Circular hole cutter

1997-03-25

1999-04-20

Pitts, Andrea L.

Gear cutting, milling, or planing

Milling

Randomly manipulated, work supported, or work following device

30300, 30310, 83745, 408 79, 408115R, 409185, B23C 120

Patent

active

058951830

ABSTRACT:
A circular hole cutting apparatus comprising a support frame, having a forward end, a rearward end, a lower end, and an upper end; the forward end forming a cutting bit mounting means, capable of rotatably retaining a cutting bit so that the upper end of the cutting bit may upwardly extend from the upper end of the support frame, and so that the lower end of such a cutting bit may downwardly extend from the lower end of the support frame; and the lower end of the support frame forming a radius arm mounting means, the radius arm mounting means being capable of adjustably retaining a radius arm, so that the rearward end of the radius arm may alternately extend rearwardly from the rearward end of the support frame and retract forwardly from positions rearward of the rearward end of the support frame.

REFERENCES:
patent: 2134069 (1938-10-01), Zimmerman
patent: 2943392 (1960-07-01), Attridge
patent: 3124182 (1964-03-01), Silken
patent: 3146675 (1964-09-01), Anderson
patent: 3276326 (1966-10-01), Gibbons et al.
patent: 4044464 (1977-08-01), Schiess et al.
patent: 4397593 (1983-08-01), Fordeck
patent: 4538946 (1985-09-01), Bloch
patent: 5016354 (1991-05-01), Baine
patent: 5065517 (1991-11-01), Markes
patent: 5430946 (1995-07-01), Peters et al.
patent: 5596809 (1997-01-01), Beard

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