Power conversion machine with pistons rotating in pairs relative to each other in a spherical housing
CA 2045400 C · Owner: 3D International A/S · Inventors: Larsen, Thor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power conversion machine comprising a rotor assembly having a first rotor part (124) with a first pair of pistons (137 138) and a second rotor part (125) with a second pair of pistons (135 136) which are rockable back and forth in relation to the first pair of pistons in the machine housing (10 110). The first rotor pan is connected to the rotary shaft (117) of the machine while the second rotor part (125) is non-rotatably connected to the first rotor part (124) and rockable in relation to the first rotor part. Consequently the first rotor part and the second rotor part are jointly rotatable about said axis of rotation. The first rotor part is rotatable in a first path of revolution while …
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 January 4, 1990 and granted December 16, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 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.