Wind rotor
CA 1236030 A · Owner: Joutsiniemi, Risto · Inventors: Joutsiniemi, Risto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described herein is a rotor for a wind rotor device. The rotor comprises a pair of elongated wings having a curved, e.g. semi-circular, cross-section and arranged in axial direction about a geometrical axis in a symmetrical fashion such that the concave sides of the wings partially overlap each other defining, an axial passage between the inner edges of the wings the wings being twisted in a screw-shaped manner in relation to one another. A shaft extends in the direction of the geometrical axis and connects one end of the rotor to a frame in a rotatable manner. A plurality of elongated generally blade-like support, ribs rigidly interconnect,at axially spaced intervals the outer edge of each …
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 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
- 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.