Fluid control means for pumps and the like
CA 1255152 A · Owner: Bw/Ip International, Inc. · Inventors: Kuah, Leong P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid machine including a device (30) disposed in the inlet passage (16) of the fluid machine for retarding pump cavitational surging at low flow rates. The device includes an annulus (38) assembly having a series of curved radially disposed vanes (32) for capturing fluid backflowing from the pumping chamber (14) and redirecting same toward the center of the inlet passageway (16).
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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 June 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 2006.
- 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.