Powered display for shopping cart
CA 2021890 A1 · Owner: Kramer, Steven L. · Inventors: Kramer, Steven L.; Tannehill, John Brooke; Tannehill, John Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A powered display (10) for visual matter (40) is mounted on a shopping cart (12) and powered by movement of the shopping cart. In one preferred embodiment of the present invention, the display is rotary and powered by a transmission system having a follower gear (52) operably interconnected with the display and meshed with a drive gear (60) that is attached to one end (54) of a bowden cable (16). The opposite end of the bowden cable is drivingly linked to a wheel (22) of the shopping cart by a follower gear (64) that meshes with a drive gear (66) mounted on the wheel. Rotation of the shopping cart wheel is transmitted via the bowden cable to the display (10) to …
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 July 24, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.