Continuous motion cinematograph film system
CA 1101708 A · Owner: Vireco A.G. · Inventors: Bentley, John; Mcnally, Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous motion film projector having a simple cam operated mirror for frame movement compensation. The mirror mechanism and accordingly the film frames are exceptionally small and the film is brought extremely close to the mirror. Typically the film frame size is 2.1 mm and the film is 6.5 mm from the mirror. This gives particular advantages which make it possible to make a practical shutterless and light efficient projector.
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 26, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 1998.
- 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.