Bag sealing machine
CA 2219356 A1 · Owner: Kellaway, David · Inventors: Kellaway, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bag typing machine with a pair of pivoted arms (1,2) a pair of leaf springs (3) between the two arms (1,2) to preferably formed from a pair of rollers. In use the open, neck of a bag is passed between the arms (1,2) and is gathered together by the leaf springs (3). The gathered together neck of the bag is pushed onto an adhesive tape which is wrapped around the neck of the bag as this passes through the second abutment. The downstream ends of the arms (1,2) are urged together by pneumatic cylinders (6). These are advantageously controlled by a variable pressure controller (9).
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 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2019.
- 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.