Pump and applicator for drywall filler
CA 2080800 A1 · Owner: Isaac, Benjamin · Inventors: Isaac, Benjamin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gear-type pump for immersion in a container of drywall filler. A drive shaft is operatively connected to the pump and extends above the container. A motor is operatively connected to the shaft above the container. A conduit has an inlet connected to the pump and an outlet above the container. A spreader is connectedto the outlet of the conduit and has a slot therein for passing strips of material to be coated with the filler. Pinch rollers are mounted near the spreader for moving the strips through the slot.
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 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 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.