Plastic washtub
CA 2083929 C · Owner: Zanussi Elettrodomestici S.P.A. · Inventors: Cargnel, Giuseppe; Durazzani, Piero
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plastic washtub used preferably in household clothes washing machines having a rigid structure (1) formed by a cylindrical wall (2), a circular bottom wall (3) and a, circular front wall. A hub (6) is inserted through the central part of the bottom wall. It is called a hub because it is inserted into a central circular hub-housing (7) of the bottom wall (3) and supports the central shaft (11) of the rotor (8) in a known manner. This hub-housing's central portion (7) has around and adjacent to it one or more closed, empty chambers so that the hub-housing (7) does not enter into contact with the washing liquid. It is preferred that inside the tub, said hub-housing (7), be protected by a …
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 November 26, 1992 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2014.
- 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.