Linear direct current motor

Details Linear direct current motor Linear direct current motor

1994-11-03

1997-07-01

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Linear

310 68B, H02K 4102

Patent

active

056441762

ABSTRACT:
A linear direct current motor that is able to maintain thrust at a constant level at all times regardless of changes in the relative positions of the primary and secondary sides. The motor includes a magnetic pole detection magnet having a number of magnetic poles one greater than that of a field magnet, and magnetic pole discrimination elements in the form of Hall effect elements that are acted on by the magnetic pole detection magnet.

REFERENCES:
patent: 5023495 (1991-06-01), Ohsaka et al.
patent: 5130583 (1992-07-01), Andoh
patent: 5218250 (1993-06-01), Nakagawa
patent: 5225725 (1993-07-01), Shiraki et al.
patent: 5357158 (1994-10-01), Takei
patent: 5473992 (1995-12-01), Takei
patent: 5530303 (1996-06-01), Takei
patent: 5565718 (1996-10-01), Takei

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