H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/45
H02K 7/10 (2006.01) H02K 1/18 (2006.01) H02K 5/08 (2006.01) H02K 5/16 (2006.01) H02K 5/22 (2006.01) H02K 7/14 (2006.01)
Patent
CA 1124298
Docket No. 9038 DRIVE UNIT FOR FLEXSHAFT VIBRATORS Abstract of the Disclosure 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 releas- ably fixed. Slip fit as a unit into this shell is an arma- ture 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 electri- cally 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 com- ponents. 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 electri- cally 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.
333902
Farkas Ralph
Spitler Clem
Koehring Company
Smart & Biggar
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