Moving magnet type linear motor for automatic door

Details Moving magnet type linear motor for automatic door Moving magnet type linear motor for automatic door

1990-12-13

1992-07-28

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

318135, 104281, 310105, H02K 4100

Patent

active

051343240

ABSTRACT:
In a moving magnet type linear motor for automatic door of the invention, a stator fixed inside a guide rail having a substantially .andgate.-shaped cross section and a moving unit having a substantially U-shaped cross section are combined so that a height of the linear motor can be the same as that of the guide rail and the moving unit is supported slidably relative to the guide rail and fixing members of the stator has at least the both longitudinal ends or the stroke ends formed of non-magnetic conductive materials in order that the moving magnet type linear motor for automatic door produces only a low sound and is durable.

REFERENCES:
patent: 3426887 (1969-02-01), Ward et al.
patent: 4185836 (1980-01-01), Taylor et al.
patent: 4318038 (1982-03-01), Munehiro
patent: 4324185 (1982-04-01), Vinson
patent: 4545117 (1985-10-01), Okamoto
patent: 4641065 (1987-02-01), Shibuki et al.

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