Expandable impeller pump
CA 2580452 C · Owner: Campbell, Robert L. · Inventors: Hambric, Stephen A.; Walsh, Justin M.; Campbell, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An impeller according to an example of the present invention comprises a hub, and at least one blade supported by the hub. The impeller has a , deployed configuration in which the blade extends away from the hub and a , stored configuration in which the impeller is radially compressed for example , by , folding the blade towards the hub. The impeller may comprise a plurality of blades, arranged in blade rows, to facilitate radial compression of the blades. The , outer edge of a blade may have a winglet and the base of the blade may have , an associated indentation to facilitate folding of the blade.
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 September 16, 2005 and granted November 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.