Magnetic base for portable tools

Details Magnetic base for portable tools Magnetic base for portable tools

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

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