Apparatus pursuing the sun
CA 2016219 C · Owner: Ito, Ryohei · Inventors: Ito, Ryohei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In various sorts of equipment utilizing the solar light and heat, an apparatus pursueing the sun in order to secure constantly the sunlight energy source by making its light receiver pursue the displacing sun, comprises a rotary shaft being rotatable and equipped with a light receiver; a thermo-deforming plate which deforms to force the area in proximity to its light collecting portion with raised temperature to become the lowest portion of curved concave; a convex lens placed over the thermo-deforming plate; and a follower rod connected to the rotary shaft in a manner to be able to swivel in the axial direction of the rotary shaft and equipped with a rolling piece in its lower end wherein, …
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 May 7, 1990 and granted November 9, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2012.
- 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.