Feed control devices for hand operated drain cleaning tools
CA 2280343 C · Owner: Dunkin, Jon R. · Inventors: Dunkin, Jon R.; Rutkowski, Michael J.; Babb, Larry F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand held and hand operated drain cleaning tool comprising a drain cleaning cable coiled in a drum and having a support for holding the drum in one hand while rotating the drum with the other through a crank on the drum is provided with a cable feeding device operable by a feed actuator which is displaceable by the one hand of a user to feed the cable relative to the drum while the one hand supports the drum and the other hand rotates the drum.
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 August 17, 1999 and granted February 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2021.
- 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.