Portable hole cutting power tool

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Magnetic or suction means

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Details

269 8, 408 56, 408129, 408710, 408712, B23B 4514

Patent

active

046873856

ABSTRACT:
The power tool has a magnetic base with superimposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to shunt or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the interior of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work.

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