Device for adjusting the running clearance of an impeller
CA 2286734 A1 · Owner: Toyo Pumps North America Corporation · Inventors: Blattmann, Urs J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved device (10) for adjusting the running clearance (11) of a pump impeller (14) is shown and described. In a preferred embodiment an annular , adjustment member (15) is positioned adjacent to a pump impeller (14) and the pump housing (16), the impeller (14) being spaced from the adjustment member (15) and housing (16) by a predetermined distance. The adjustment member (15) is selectively moved towards and away from the impeller (14) and lockable in , any desired position. The adjustment member (15) is moved in an axial direction by loosening a plurality of clamp nuts (26 27), and turning , adjustment nuts (26 27), until the annular adjustment member bottoms out on the …
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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
- Filed April 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2020.
- 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.