Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1981-09-21
1983-05-17
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, 310 43, 310 58, 310 89, 310 91, H02K 710
Patent
active
043842240
ABSTRACT:
A drive motor for a flexible drive shaft of an internal vibrator or some other device potentially the source of an electrical shock features a cylindrical structure embodying a field assembly which slip fits in a cylindrical shell which embodies positioning means to which the field assembly and electrically connected commutator brush means may be releasably fixed. Slip fit as a unit into this shell is an armature assembly including a commutator means fixedly mounted directly to and about shaft means intermediate its ends. One end portion of the shaft means provides an electrically non-conductive coupling device for drivingly relating the shaft means to a device which must be powered. The shaft means has affixed thereto the inner races of bearing means to either end of the armature assembly the outer races of which are in direct contact with and protected by electrically non-conductive material forming part of end covers for said cylindrical shell. The end covers are slotted and fan blade means are fixed directly to said shaft means to produce a cooling flow of air about the drive unit components. The drive unit also embodies rubber, electrically non-conductive, motor mounts ring-shaped base portions of which seat about and are contained to the shell by electrically non-conductive end covers. Projecting radially from the ring-shaped base portions are arms spaced by tube elements which provide electrically insulated hand holds for said drive unit between and clear of said end covers.
REFERENCES:
patent: 3121813 (1964-02-01), Pratt
patent: 3180625 (1965-04-01), Wyzenbeek
patent: 3188054 (1965-06-01), Mason
patent: 3344291 (1967-09-01), Pratt
patent: 3457438 (1969-07-01), Badcock
patent: 3462623 (1969-08-01), Batson
patent: 3622821 (1971-11-01), Maffey
patent: 3652879 (1972-03-01), Plunkett
patent: 3760209 (1973-09-01), Hult
patent: 3829721 (1974-08-01), Rosenthal
patent: 3894254 (1974-03-01), Holther
patent: 4059898 (1977-11-01), Adair
Farkas Ralph
Spitler Clem
Bloom Jerome P.
Koehring Company
Skudy R.
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