Beverage dispensing system
CA 1300567 C · Owner: Hedderick, John B. · Inventors: Page, David G.; Hedderick, John B.; Rutty, Brian R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A beverage dispensing system has a valve in a tap controlling dispensing of the beverage through a supply pipe from a rigid or flexible container. Air nitrogen (or other, inert gas) or carbon dioxide gas from an air pipe is introduced into the beverage in the supply pipe during dispensing for development of a head or froth. The introduced gas flows under pressure (which is preferably adjustable) from the air pipe and by way of a capillary tube restrictor and a non-return valve communicating with the capillary tube restrictor into the beverage in the supply pipe. The non-return valve has a resilient diaphragm which normally closes that valve and is displaceable under gas pressure to admit …
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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
- 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.