Stepping motor

Details Stepping motor Stepping motor

1982-12-14

1984-11-20

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 82, H02K 3700

Patent

active

044840950

ABSTRACT:
This invention relates to an improvement in a stepping motor composed of a stator housing containing annularly arranged electromagnets or coils with pole pieces and a magnetically conducting rotor composed of a flexible membrane solidly connected to an annular armature plate and connected to a drive shaft axially supported within the stator housing, the rotor being provided at its periphery with a toothed rim, the improvement comprising, in addition to the rotor (5), a second rotor (11) mounted on the drive shaft (3) and being composed of a flexible membrane (11') including a ring (9) provided with a toothed rim (10) conencted to the membrane (11'), the toothed rim (10) corresponding to a detent toothed rim (13) fixed to the stator housing (2), and the rotor (11) being so actuated by an electronically controlled indexing coil (15) located between the electromagnets or coils (4) that the rotor (11) is indexed or fixed in place according to the pitch of the detent toothed rim (13).

REFERENCES:
patent: 3585425 (1971-06-01), Newell
patent: 3585426 (1971-06-01), Newell
patent: 4081702 (1978-03-01), Neumann
patent: 4117356 (1978-09-01), Mansfield
patent: 4395650 (1983-07-01), Kettenring

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