Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1985-08-09
1986-12-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310235, 310237, H02K 1304
Patent
active
046299238
ABSTRACT:
To permit use of asbestos-free insulating material in the manufacture of commutators, while insuring reliable retention of the commutator segments, the commutator segments are formed with projecting leg portions which are embedded in the insulating body, a first leg portion being formed with a projection which extends circumferentially towards the second leg portion of a neighboring segment and overlaps, at least in part, the neighboring segments and forms therewith an interlocking fit, interlocking at least in radial direction, the interlocking fit leaving a gap between the first leg portion of one segment and the neighboring segment to provide for insulation between the segments. The hook-shaped interengagement, which may, also, include interengaging fits of attaching tabs or lugs for winding ends, maybe S-shaped, or otherwise provided for an interlock which locks the segments securely in position, resistant to radial as well as tangential forces which arise during operation of the machine, due to centrifugal force and friction of engaging brushes.
REFERENCES:
patent: 3102965 (1963-09-01), Ickes
patent: 3171998 (1965-03-01), Bath
patent: 4369566 (1983-01-01), Skrdlant
"The New Yorker"; an article, Annuals of Law, pp. 49 and 50; P. Brodeur; 6/10/1985.
Robert & Bosch GmbH
Skudy R.
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