Rotor stator assembly for a low inertia stepping motor

Details Rotor stator assembly for a low inertia stepping motor Rotor stator assembly for a low inertia stepping motor

1975-07-09

1977-08-30

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310266, H02K 3700

Patent

active

040456960

ABSTRACT:
A rotor stator assembly comprising a stepping motor having an improved torque-to-inertia ratio resulting from a substantial reduction in moment of inertia due to the conical shape of the rotor. A core energized by a DC coil is disposed axially of the base of the conical rotor and the magnetic path is through the base of the rotor, out its periphery, through the stator, through conductive members and back to the core. There is a further increase in torque-to-inertia ratio which is due to a decrease in rotating mass when the rotor is hollow.

REFERENCES:
patent: 414659 (1889-11-01), Seafert
patent: 422862 (1890-03-01), Washburn
patent: 829975 (1906-09-01), Lincoln
patent: 1962832 (1934-06-01), Neureuther
patent: 2677256 (1954-05-01), Donandt
patent: 3001093 (1961-09-01), Wilcox et al.
patent: 3428837 (1969-02-01), Morreale et al.
patent: 3519859 (1970-07-01), Morreale et al.
patent: 3603826 (1971-09-01), Saretzky
patent: 3689787 (1972-09-01), Saretzky

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