Wind powered air pump
CA 2423101 A1 · Owner: Freberg, Robert · Inventors: Freberg, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wind powered air pump apparatus comprises a windmill operative to rotate a driveshaft, in response to a force exerted by wind. An eccentric is connected to the driveshaft and is, operative to reciprocate in response to rotation of the driveshaft. A first air pump, comprises a first diaphragm connected to the eccentric such that the first diaphragm is, operative to push air into a conduit during a first half revolution of the driveshaft, and, operative to draw ambient air in during a second half revolution of the driveshaft. A, second air pump comprises a second diaphragm connected to the eccentric such that the, second diaphragm is operative to push air into the conduit during the …
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 March 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2025.
- 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.