Completely automatic waterless closet
CA 2253775 C · Owner: He, Englong · Inventors: He, Englong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A completely automatic waterless closet according to this invention includes a case (3), a shaping cavity (7), mounted on the case (3) an annular seat (8) mounted on the shaping cavity (7), a shield of the plastic bag (10) arranged around the case (3), and a pulling-opening-closing mechanism mounted in the case (3), said mechanism, controlls the shaping cavity (7) to connect with the receptacle collecting excrement and urine mounted below the, case (3) and pulls the plastic bag (10). Said case (3) is mounted on a pedal (2), the back end of said pedal (2) is hinged to the base (1),the front end of said pedal (2) is a swing end a , compressed spring (1) is mounted between the front end …
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 April 24, 1996 and granted January 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 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.