Patent Yard Sign in
Expired Canadian patentCanada

Fluidic oxygen sensor monitor

CA 1296547 C · Owner: Litton Systems, Inc. · Inventors: Myers, William P.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A fluidic bridge for determining the partial pressure of a gas has a positive pressure inlet for a reference gas and a sample gas and an ambient pressure outlet. The reference gas and the sample gas pass through a capillary passage and an orifice passage, and the pressure differential between the outlet of the reference capillary passage and the outlet of the sample capillary passage is a function of the density of the gas. A pressure ratio regulator is used to equalize the pressure of the reference gas and the sample gas applied to the inlets of the capillary passages. The length of the capillary passages and the flow character stics of the orifice passages are adjustable to allow the …

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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledApril 23, 1987
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296547 C
Classification (IPC)G01N7/00

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 23, 1987Patent grantedMarch 3, 1992Term endedMarch 3, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.