Noncontrolling type valve
CA 1301628 C · Owner: Nitta, Tomio · Inventors: Nitta, Tomio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement of noncontrolling type valve for use in a gaslighter, a portable cooking stove and other burners which valve, comprises a valve body push-fitted in a recess formed in the top plate of a gas container; and a filter positioned under the valve body to permit a given constant flow of gas to pass to the valve body when the valve opens. The valve is improved acoording to the present invention in that an annular spacer is fixed to the annular inside edge of the uppersurface of said filter allowing, the bottom end of said valve body to contact the remaining center area of the uppersurfaces of said filter. The coplanar positioning of the bottom end of the valve body with the annular …
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 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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.