Step linear actuator

Details Step linear actuator Step linear actuator

1989-07-25

1992-02-25

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335232, H01F 700

Patent

active

050917102

ABSTRACT:
A step linear actuator includes a stationary member of a magnetic material, a pair of moving units each being in contact with the stationary member and having a magnetic coupling element for magnetically generating a contact force to the stationary member and an opposing face opposing to the opposing face of the other moving unit through a gap therebetween, and a magnetic driver for generating magnetic forces to control the contract force between each moving unit and the stationary member and to cause a relative movement of the pair of moving units with respect to each other.

REFERENCES:
patent: 4609899 (1986-09-01), Koehler
patent: 4697164 (1987-09-01), Eilertsen
patent: 4717900 (1988-01-01), Iwasaki
patent: 4730175 (1988-03-01), Ichikawa et al.
patent: 4797645 (1989-01-01), Uetsuhara
"Linear Step Motor Design Provides High Plotter Performance at Low Cost"; Tsai et al.; H. P. Journal, 1979.

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