Spin blaster
CA 1232760 A · Owner: Empire Abrasive Equipment Corporation · Inventors: Sheesley, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for blast-cleaning the interior surface of a pipe includes a main housing that travels the length of the pipe, and rotatably supports a blast nozzle. A nozzle support shaft journaled in bearings carried by the housing rotates, freely, reactively to the force exerted within the nozzle by a carrier fluid, which is forced through the nozzle under high pressure, thus causing the nozzle and hence the nozzle, support shaft, to rotate at high speed within the housing. The carrier fluid is usually compressed air. Since it is directed through a non-rotating conduit to the rotating support shaft, a gasket is interposed between the rotating and nonrotating components of the apparatus. To …
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 February 16, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2005.
- 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.