Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1985-05-09
1987-11-24
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Linear
H02K 4100
Patent
active
047091754
ABSTRACT:
A linear pulse motor which includes: a primary magnetic flux generating unit composed of a pair of cores each having a coil wound therearound and pairs of magnetic poles, each pole 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, the 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 the teeth facing to magnetic poles. The pole pieces each include a 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; and the pole pieces comprise a ferromagnetic thin plate attached to upper faces of the pole piece members, the thin plate being provided in an upper face thereof with pole teeth portions corresponding to the head portions of the pole piece members, each pole teeth portion having second teeth formed at a predetermined pitch in parallel with the first teeth so that the second teeth may face the first teeth.
REFERENCES:
patent: 4578622 (1986-03-01), Nakagawa et al.
Duggan Donovan F.
Shinko Electric Co. Ltd.
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