Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Magnetic or suction means
Patent
1985-04-08
1987-01-27
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Magnetic or suction means
279 1M, 408710, 408712, B23B 4514
Patent
active
046391703
ABSTRACT:
The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. The upper assembly is somewhat shorter than the lower assembly so even when the upper assembly is positioned to shunt to subtract from the flux of the lower assembly there will be some magnetic flux attracting the base to a ferromagnetic material. 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.
REFERENCES:
patent: 3010054 (1961-11-01), Goldsmith
patent: 3237789 (1966-01-01), Engelsted
patent: 4012162 (1977-03-01), Warren
patent: 4261673 (1981-04-01), Hougen
patent: 4278371 (1981-07-01), Meyer
patent: 4408752 (1983-10-01), Uchikune et al.
patent: 4462726 (1984-07-01), Silvey et al.
patent: 4541759 (1985-09-01), Miyoshi
patent: 4591301 (1986-05-01), Pelfrey
Michael Bayard H.
Milwaukee Electric Tool Corporation
Webb Glenn L.
Weidenfeld Gil
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