Automatic garbage-collecting cart
CA 2176543 C · Owner: Chiu, Kuo-Feng · Inventors: Chiu, Kuo-Feng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A garbage-collecting cart for cleaning debris from the ground is provided which includes a cart body a, collecting mechanism, and a handle portion. The collecting mechanism is comprised of a plurality of spiral plates secured to a wheel shaft. In operation, when the cart body is pushed forward, the wheel shaft rotates the multiple spiral plates of the collecting mechanism which sweep up the garbage or debris on the ground. A stopper board is positioned at a rear end of the cart body to direct the swept up garbage into the cart body.
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 14, 1996 and granted December 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2018.
- 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.