Variable orifice gas flow sensing head
CA 1069342 A · Owner: Research Development Corporation · Inventors: Osborn, John J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TO ALL WHOM IT MAY CONCERN:, BE IT KNOWN that I JOHN J. OSBORN, a citizen of, the United States of America residing in the City of Tiburon, County of Marin State of California, have invented certain new and useful improvements in a, VARIABLE ORIFICE GAS FLOW SENSING HEAD of which the following is a specification. Abstract of the Disclosure A gas flow meter employing means for obtaining a differential pressure across a resistance orifice in a line of gas flow. Although flow through the orifice may be turbulent thus making the differential pressure non linear with respect to the amount of flow, the effect of that turbulence is offset by the provision of a hinged flap within the orifice which …
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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.