Magnetic screw device, method of manufacturing magnetic screw de

Details Magnetic screw device, method of manufacturing magnetic screw de Magnetic screw device, method of manufacturing magnetic screw de

1996-08-26

1999-06-22

Bidwell, James R.

Conveyors: power-driven

Conveyor section

Load propelled as the reactive means in a linear motor or...

B65G 3500

Patent

active

059134011

ABSTRACT:
A magnetic screw device comprising an internal (male) magnetic screw having the even number of magnetized bands spirally magnetized on an outer surface with contiguous magnetized bands having opposite polarities and an external (female) magnetic screw having the even number of magnetized bands spirally magnetized on the same outer surface with contiguous magnetized bands having opposite polarities. The internal and external magnetic screws are composed of a plurality of spiral cylindrical magnets disposed in its axis direction, the spiral cylindrical magnet being formed of short cylindrical permanent magnet materials on each outer or inner surface which is spirally magnetized. The internal magnetic screw includes a rod member to support the inner spiral cylindrical magnets.

REFERENCES:
patent: 3754313 (1973-08-01), McCulloch
patent: 4488477 (1984-12-01), Miyamoto
English translation of Japanese Patent Application Laid-Open Publication No. 8-17625 (27 pages).

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