Step motor

Details Step motor Step motor

1986-09-16

1988-08-16

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 80, 310 83, H02K 3700

Patent

active

047646969

ABSTRACT:
A step motor of the linear type has a shaft threadedly engaged with an inner hole of a rotor and is slidably supported for axial movement by a front bearing and a rear bearing. A stopper pin that abuts on a stationary portion at the rear end of travel projects from an outer circumferential portion of the shaft. The shaft is moved in the axial direction by the rotation of the rotor and the front shaft bearing is provided with a slot allowing the stopper pin to pass through. Consequently, when the shaft is advanced, the stopper pin for stopping the rear end of travel does not abut on the front bearing, and the advance of the shaft is not limited. The slot, therefore, allows the stroke of the shaft to be lengthened without lengthening the front portion of the housing.

REFERENCES:
patent: 2978621 (1961-04-01), Martinek
patent: 3159758 (1964-12-01), Hemperley, Jr. et al.
patent: 4333026 (1982-06-01), Bock et al.
patent: 4381747 (1983-05-01), Kobayashi et al.
patent: 4393319 (1983-07-01), Bock
patent: 4438361 (1984-03-01), Manson
patent: 4480614 (1984-11-01), Kobashi et al.
patent: 4496865 (1985-01-01), Allen et al.
patent: 4501981 (1985-02-01), Hansen
patent: 4588913 (1986-05-01), Adami

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