Method of and apparatus for producing covered infusion bags
CA 1320376 C · Owner: Christie, Hugh P. · Inventors: Christie, Hugh P.; Wallace, Allan K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to an apparatus for attaching a cover to a porous bag such as a tea bag. The apparatus has means for feeding a strip of cover material which is cut into individual covers and the apparatus has bag feeding means to accurately position each bag on its respective cover, heat sealing means sealing a flange of the bag to the cover. The bag and cover then pass to a folding means to fold the cover over the bag, and to an output channel for packaging the covered bags.
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
- Granted July 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 2010.
- 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.