Composite disk valve for dispensing cartridges
CA 1286645 C · Owner: Smith, Ernest L. · Inventors: Smith, Ernest L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a cartridge dispenser (10) for dispensing mayonnaiselike food sauces in measured quantities a laminated end, disk (32) which provides valving for the dispensed material. The end disk (32) includes a paperbaord (36) layer for stiffness and rigidity, a polyethylene disck (40) on the paperboard (36) for shielding it from oils a, polyester disk (46) beneath the paperboard (36) for providing the valve (52), and an inner polyethylene disk (58) allowing the composite disk (32) to be secured on the end of the cartridge dispenser (10) with a food grade adhesive (60). The polyester disk (46) includes three equally spaced valves (52) each formed by crosshair slits (54) which provide vanes (56) that …
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 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.