Differential torque motor

Details Differential torque motor Differential torque motor

1993-07-21

1995-12-12

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68R, 310179, 310254, 310261, H02K 2112

Patent

active

054752779

ABSTRACT:
A PM (permanent magnet) motor is described, that uses electromagnetic current to release or pull a PM, which has increased starting torque and a large power output in a small volume. The motor includes phase units (60, FIG. 3 ) each having three electromagnets (46A-46C) and each having two PMs (44A, 44B) of Nd-B-Fe permanent magnet material. At a start position, a PM (44B) of each phase unit is centered between the cores (50B, 50C) of two electromagnets, and there is slight overlap (90, FIG. 6 ) of each of the two core faces (64B, 64C) with the PM face (62A). Each PM face has a longer circumferential length (D) than that (G) of each core face. Each PM face and each core face, has an axial length (E, FIG. 1 ) which is much larger than its circumferential length (D, G). The interface end of each electromagnet coil lies a small distance (K) from the core face.

REFERENCES:
patent: 4306164 (1981-12-01), Itoh et al.
patent: 4447793 (1984-05-01), Gray
patent: 4972112 (1990-11-01), Kim
patent: 5030864 (1991-07-01), Van Hout
patent: 5030867 (1991-07-01), Yamada et al.
patent: 5250867 (1993-10-01), Gizaw
patent: 5258697 (1993-11-01), Ford et al.
patent: 5281879 (1994-01-01), Stake et al.
patent: 5323077 (1994-06-01), Brandes

Affiliated with

Also associated with

Rating

Differential torque 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 Differential torque motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential torque motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1362120