Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-05-24
1990-05-08
Salce, Patrick R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 23, 310 91, 310208, 335278, 336225, H02K 515, H02K 304
Patent
active
049241265
ABSTRACT:
A coaxial type starter device comprises an armature rotary shaft disposed in a dc motor, a rotary output shaft having a pinion at its one end and supported so as to be slidable in the axial direction, a solenoid-type an electromagnetic switch disposed in alignment with the axial line of the rotary output shaft, wherein the electromagnetic switch comprises a cylindrical casing surrounding through bolts extending in the axial direction along the inner circumferential surface of the casing, an exciting coil disposed in the casing and a plunger disposed at the inner part of the casing so as to be slidable in the axial direction. The exciting coil is in the shape of a race track in cross section and has a portion extending near the inner circumferential surface of the casing except for areas where the through bolts extend.
In another embodiment, through bolts are extended inside the yoke of the dc motor along its axial direction to thereby assemble the yoke, a housing covering the commutator of the motor and a front machine frame by fastening, and the electromagnetic switch is attached to the housing by means of fitting bolts which extend in a space between the exciting coil and the plunger of the electromagnetic switch.
REFERENCES:
patent: 1455188 (1923-05-01), Cox
patent: 4613761 (1986-09-01), Yabunaka
patent: 4760274 (1988-07-01), Isozumi
patent: 4795932 (1989-01-01), Long
patent: 4800766 (1989-01-01), Isozumi et al.
Mitsubishi Denki & Kabushiki Kaisha
Rebsch D. L.
Salce Patrick R.
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