Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1980-10-24
1982-06-22
Miller, J. D.
Electrical generator or motor structure
Dynamoelectric
Rotary
310162, 310268, H02K 3700
Patent
active
043364713
ABSTRACT:
The efficiency of a stepping motor is increased by using a stator assembly comprising (a) a magnetically permeable first stator member having a central hub and multiple, spoke-like pole pieces radiating from the hub and (b) a stator bridge assembly in which a plastic holder member is united to a magnetically permeable second stator member having a central hub and radiating pole pieces in spaced, overlapping relation to the hub and pole pieces of the first stator member. The plastic holder member includes thermoplastically worked portions which form a bushing in a central aperture in the hub of the second stator member to rotatably receive one end of the rotor axle while the other end of the rotor axle extends through an axially aligned central aperture in the hub of the first stator member. Other portions of the plastic holder member form a support bridge between the first and second stator members. Overlapping of extraneous areas of the first and second stator members not associated with the hub and pole pieces is eliminated to reduce magnetic losses in the stator circuit. The stator assembly thus provides a stable bridge for rotor pivoting with minimized magnetic losses, resulting in higher torque output at a given level of current.
REFERENCES:
patent: 2548133 (1951-04-01), Treat
patent: 3475630 (1969-10-01), Heinzen et al.
patent: 3989967 (1976-11-01), Kikuyama et al.
patent: 4075518 (1978-02-01), Koehler et al.
patent: 4079279 (1978-03-01), Oudet et al.
patent: 4217509 (1980-08-01), Sudler
Crutcher William C.
Miller J. D.
Rebsch D. L.
Timex Corporation
Timmer Edward J.
LandOfFree
Stator assembly for stepping motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stator assembly for stepping motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stator assembly for stepping motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-654756