Cutting – With signal – scale – or indicator – Indicates tool position
Patent
1997-01-31
1999-06-08
Dexter, Clark F.
Cutting
With signal, scale, or indicator
Indicates tool position
83588, 83591, 30300, 408112, 408186, 408204, B26D 310
Patent
active
059102020
ABSTRACT:
A rotary cutter for cutting holes of various sizes in ceiling tile in connection with the installation of light fixtures. The cutter includes an enclosure which functions as a jig for receiving and accurately positioning tile members prior to the cutting operation. The lower portion of this enclosure functions as a waste receptacle following the cutting operation. A drive shaft turns a pair of arms bearing two cutter knives for rotation within the structure thus cutting holes in the ceiling tile. The cutting blades are biased upwards for returning to a non-cutting position upon completion of the cutting operation. The cutting knives are radially adjustable along the arm on which they are mounted. A conventional electric drill is mounted to the other end of the drive shaft for imparting rotary motion to the blade arm.
REFERENCES:
patent: 2546292 (1951-03-01), Bell
patent: 3365988 (1968-01-01), Karlan
patent: 4547966 (1985-10-01), Eden
patent: 4548118 (1985-10-01), Brosch
patent: 4593467 (1986-06-01), Safar
Dexter Clark F.
Farino, Jr. Thomas R.
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