Process and apparatus for the preparation of balloons
CA 2032548 C · Owner: Self-Sealing Systems Limited · Inventors: Lang, Philip Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and process are described for turning inside out (i.e. everting) a part of the neck of a balloon, the apparatus essentially comprises an elongate mandrel which is tapered at one end so that it can be inserted into the neck of the balloon, and pressure applying means, which in use press a portion of the neck against the inserted mandrel. The neck is everted simply by a reciprocating motion of the mandrel relative to the pressure applying means. An adhesive glue can then be administered to the everted neck portion. There is further described an automated apparatus for everting a plurality of balloons, applying adhesive to each of the everted neck portions, securing each prepared …
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 December 18, 1990 and granted June 11, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2012.
- 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.