Transformer oil circulating pump
CA 1183721 A · Owner: Westinghouse Electric Corporation · Inventors: Bell, Clifford J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a motor pump including means for improving the lubrication and cooling of the bearings supporting the pump shaft. At each bearing helical grooves are formed in, the cylindrical bearing surface and/or in the surface of the shaft portion journalled therein, and a flow-inducing member disposed on the shaft for rotation therewith is located adjacent one end of the bearing the arrangement, being such that rotation of the shaft causes lubricating liquid coolant from a space within the pump housing to flow into and through the helical grooves and causes the, flow-inducing member to produce suction aiding the flow of liquid through the helical grooves. Preferably the, …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.