Centrifugal fan with sliding inlet control system
CA 1317916 C · Owner: Passadore, Albert M. · Inventors: Passadore, Albert M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A centrifugal fan in which the cone and wheel have a telescoping relationship to vary the rated capacity of the fan. The mechanism effects the relative movement manually, or by a servo arrangement responsive to system pressure. The telescoping relationship includes an anti-recirculation sleeve on the cone. The wheel and cone can be moved to effect engagement of the cone and the wheel back plate to cut off the fan when, in a parallel arrangement, and to arrest wheel movement after the drive to the wheel has been stopped. In another aspect, the cone and wheel are bodily stationary and a separate movable flow control sleeve is positioned to control flow.
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 May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
- 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.