Method and apparatus for using a light valve to reduce the visibility of an object within a gaming apparatus
CA 2552879 C · Owner: Igt · Inventors: Mattice, Harold E.; Wilder, Richard L.; Griswold, Chauncey W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gaming apparatus is disclosed that includes a housing a value input device, a transparent panel having an outer surface and an inner surface and a , plurality of mechanically rotatable slot reels disposed in the housing so that the mechanically rotatable reels are visible to a player through the transparent panel. The gaming apparatus also having a light valve that includes a suspended particle device disposed between the inner surface and the slot reels, and a controller coupled to the light valve to cause the light valve to become opaque to substantially block the view of the slot reels to the player.
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 11, 2005 and granted October 27, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 11, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.