Applicator
CA 1297071 C · Owner: U.L.V. Pty. Limited · Inventors: Baumber, Donald Eric; Baumber, Kevin Geoffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An applicator to dispense herbicides is disclosed. The applicator has an applicator head including a supply cavity to receive a supply of the herbicide to be dispensed a delivery, cavity from which the herbicide is dispensed to a wick or other dispensing material, and a valve automatically controlling the material flow from the supply cavity to the delivery cavity. The valve is maintained by gravity in a closed position when the applicator is not used. During use of the applicator, movements which are sufficient to overcome the gravity force acting on the valve will automatically move the valve to an open position permitting herbicide to flow from the supply cavity to the delivery cavity. …
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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 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.