Dual-use and manual pool cleaning apparatus
CA 2175362 C · Owner: Sta-Rite Industries, Inc. · Inventors: Rief, Dieter J.; Frentzel, Herman E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic swimming pool cleaner, (20) of the type driven by water flow hav-, ing a housing (22) forming a chamber (24) open at its lower side, pivotable attachment of a hose (28), and a handle (27a) pivotably and detachably secured to the housing, such that the pool cleaner can be used manually or automatically as desired. Various embodiments of the invention include vibratory bristle drive to provide forward motion, directional change, rotational scrubbing, and/or vibratory scrubbing action for dual-use (automatic or manual) and manual cleaning apparatus.
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 October 24, 1994 and granted May 13, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2016.
- 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.