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US 4,059,775 AGranted
Linear motor
AssigneeControl Data Corporation
InventorGary Paul Warmka
Life of this patent
Estimating the term…
Abstract
A linear motor having a permanent magnet armature whose interaction with the field provided internally by a closed flux path field core having a winding on one leg, provides the driving force.
Claims4
A linear motor comprising
- a. an E-shaped field core of ferromagnetic material having a first leg and second and third legs on opposite sides of, substantially parallel to, and spaced apart from the first leg, at least one leg containing a notch adjacent the closed end of the space between adjacent legs;
- b. a winding wound on the first leg and forming between itself and the second and third legs first and second slots respectively;
- c. first and second substantially rectangular magnets having north and south pole faces opposite faced and spaced apart less than the width of each slot;
- and
- d. rotating arm means for supporting the first and second magnets in the first and second slots respectively, with similar pole faces adjacent the winding, for allowing translation of the magnets along the legs while maintaining the pole faces in substantially the same position during translation of the magnets.
2 more elements
Dependencies are inferred from the claim text.