Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1980-01-11
1982-09-14
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 68B, 310 50, 310194, 318305, 318351, H02K 1100
Patent
active
043497586
ABSTRACT:
A modulator motor and drive unit for use in an electrical device, such as a hand food mixer, wherein the motor is characterized by a low-cost speed control which is capable of providing a large number of discrete motor speeds. The speed control, rather than utilizing a multi-contact switch connected to the field coil by individual taps, has approximately twenty field coil continuous loop taps wound over a bobbin spindle in side-by-side relationship with a wiper contact being slideably movable relative thereto along a path from which the insulation has been removed. Positions of the wiper contact may be determined by replaceable detent elements provided with different detent patterns providing different series of motor speeds whereby the same motor and drive module may be provided within a suitable housing(s) for the economical production of several different models of such electrical devices having differing speed selections. The housing halves are provided with module supporting means and may be permanently secured together by adhesive means. The motor is also characterized by a torsion spring and brush guide arrangement which prevents any contact of the brush springs with the motor commutator.
REFERENCES:
patent: 2554506 (1951-05-01), Schwarz
patent: 2737371 (1956-03-01), Gerry
patent: 2753472 (1956-07-01), Schott
patent: 3159763 (1964-12-01), Colvill
patent: 3418504 (1968-12-01), Paule
patent: 3908142 (1975-09-01), Gaudry
patent: 4081704 (1978-03-01), Vassos
patent: 4241297 (1980-12-01), Piber
Grant, Jr. Edward J.
Scott William H.
Stipanuk John M.
Clark George R.
Dean Clifford A.
Rose Neil M.
Skudy R.
Sunbeam Corporation
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