Cutlery – Pipe and rod cutters – Rotary
Patent
1997-06-05
1998-10-06
Watts, Douglas D.
Cutlery
Pipe and rod cutters
Rotary
30102, B23D 2108
Patent
active
058159266
ABSTRACT:
A new Internal Pipe Cutter for providing a cutting tool designed for cutting the wall of a pipe from inside the pipe through an opening at one end of the pipe. The inventive device includes an elongated shaft having an upper end adapted for connection to a rotational power tool and a lower end to which a rotary cutting blade may be perpendicularly attached. A set collar is slidably mounted on and adjustably positioned along the shaft. A gripping sleeve is disposed around the set collar and is slidably and rotatably mounted on the shaft whereby the gripping sleeve and the set collar are conjointly positionable along the shaft and whereby the shaft and the set collar conjointly rotate independent of the gripping sleeve. The gripping sleeve includes a guide flange at a lower end thereof wherein the guide flange abuts the open end of the pipe as the rotary cutting blade is circled within the inside of the pipe. Accordingly, the set collar is locked on the shaft such that when the guide flange abuts the open end of the pipe, the rotary cutting blade will be at a desired level.
REFERENCES:
patent: D273194 (1984-03-01), House
patent: 3911574 (1975-10-01), Jones
patent: 3999292 (1976-12-01), Breese
patent: 4177559 (1979-12-01), Anderson
patent: 4307512 (1981-12-01), Phillips
patent: 4369573 (1983-01-01), Vitale
patent: 4466185 (1984-08-01), Montiero
patent: 4932125 (1990-06-01), Poveromo
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