Magnetic pole pieces for using in linear pulse motor

Details Magnetic pole pieces for using in linear pulse motor Magnetic pole pieces for using in linear pulse motor

1985-05-09

1987-11-24

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

H02K 4100

Patent

active

047091746

ABSTRACT:
A magnetic pole piece for use in a linear pulse motor which includes: a primary magnetic flux generating unit composed of a pair of cores each having a coil wound around them and pairs of magnetic pole pieces, each magnetic pole piece being provided at either end portion of a corresponding core; and a scale having a row of first teeth formed therein along a direction of relative travel thereof with respect to the magnetic flux generating unit, and scale and the flux generating unit being disposed so that the scale relatively moves with respect to the primary magnetic flux generating unit by generating magnetic flux in gaps formed between the magnetic poles and first teeth facing to the magnetic poles, the pole pieces each including the flat magnetic pole piece member having a head portion and a leg portion and are arranged on a plane with each head portion disposed close to head portions of adjacent pole piece members. The head portions of the adjacent pole piece members are integrally connected by a connecting portion having a small cross-sectional area.

REFERENCES:
patent: 4578622 (1986-03-01), Nakagawa et al.

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