Device for attaching a pump impeller
CA 2298092 C · Owner: Itt Manufacturing Enterprises, Inc. · Inventors: Ekstrom, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a device for attaching a pump impeller (5) onto a conical shaft end (7). A socket (8) provided with a slot is arranged on the shaft end (7) said socket having an outer diameter corresponding with the the shaft bore in the impeller (5). The socket (8) is provided with a threaded bore (9) for an adjusting screw (10) which by help of a tool, can be turned thereby moving the impeller (5) axially on the shaft.
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
- Filed February 2, 2000 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2022.
- 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.