Abstract A nozzle for removing material such as burned shellac, paper residue, insulation, dirt, grease, etc. from stator slots of electric motors preparatory to rewinding and a method of removing such material with such a nozzle. In the embodiment described below, the nozzle includes an oblong hollow ceramic member which is force fitted at one end into a rubber stopper and has its other end beveled for fitting into the slots and a metal coupler for connecting the member to a suitable sand blasting source. The beveled end and oblong shape permit the nozzle to be easily inserted in the stator slots and to effectively remove the material in a short period of time without damage to the exterior of the slots in contrast to a nozzle having other shapes. Broken or worn ceramic members can be easily and quickly replaced by removal from the stopper and force fitting a new ceramic member in place.
Inventors
👤 Thomas L Thompson
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-07 12:03
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/02; B24C5/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A nozzle for use in abrasive blasting stator slots in an electric motor comprising: a ceramic member having a substantially oblong interior passage, an oblong exterior shape with two opposing substantially flat surfaces and an end beveled on said flat surfaces, stopper means for receiving the other end of said member, and means for coupling said other end to a source of abrasive for blasting.
Claim 2
Dependent Claim
65 words
A nozzle for use in abrasive blasting stator slots in an electric motor comprising: a ceramic member having a substantially oblong interior passage, an oblong exterior shape with two opposing substantially flat surfaces and an end beveled on said flat surfaces, stopper means for receiving the other end of said member, and means for coupling said other end to a source of abrasive for blasting.
Claim 3
Dependent Claim
22 words
A nozzle as in claim 1 wherein said stopper means is rubber and said member is force fitted in said stopper means.
Claim 4
Dependent Claim
22 words
A nozzle as in claim 1 wherein said coupling means is metal and said stopper means is held within said coupling means.