North American Philips Corporation

Other

John A Larson

Henry Pikul

Joseph S Droho

Anthony J Andolino

Dale C McClurg

A filter apparatus for use in removing mist, smoke and particles generated by a machine tool includes a mechanical first filtration stage and a second filtration stage consisting of an electrostatic precipitator. A blower device creates a stream of air for entraining and moving mist, smoke and other particles upwardly through the first and second filtration stages. Circuitry is provided selectively opening the circuit to the collector of the electrostatic precipitator. The collector is energized by a lower voltage from the ionizing field when current to the collector is interrupted. By energizing the collector of the electrostatic filter at a low voltage and by operating the blower unit at a low velocity, mist, smoke and other particles are efficiently collected without shorting the collector plates when water based metal working fluids are used.

Apparatus for removing mist, smoke and particles generated by machine tools

A transformer in which the primary coil and the secondary coil are insulated from the iron laminations which form part of its flux paths by insulated covers which snap-on to the primary and secondary coils.

Electrical transformer structure with coil covers

A transformer in which the tops and bottoms of both the primary and secondary coils are insulated from the magnetic circuit by substantially flat plate plastic insulators adjacent both the top and bottom of both coils.

Growing community of inventors

Portage, WI, United States of America

John A Larson