G - Physics – 01 – N
Patent
G - Physics
01
N
324/25
G01N 27/416 (2006.01) G01N 27/409 (2006.01)
Patent
CA 1283702
ABSTRACT OF THE INVENTION An oxygen sensor (10) having a electrolyte sensor (40) located in a metal shell (14) and a insulating terminal (102) located in a metal sleeve (72). The metal sleeve (72) is secured to the metal shell (14) to define a reference chamber (68) adjacent the interior of the electrolyte sensor (46). A closed end (74) on the sleeve (72) has a plurality of openings (76, 76'...76n) surrounding a central opening (78). A porous filter (90) has a base (92) that is continually urged against end (74) by the action of spring (118) on terminal (102). A grommet (124) located in the central opening (78) has a cylindrical body with a flange (136) that radially engages filter (90) and a series of lands (132, 132' or 132n) that form a plurality of sealing surfaces on lead (12) that connects the electrolyte sensor (46) with a controller. Changes in temperature which cause the components of sensor (10) to expand and contract at different rates are compensated by the grommet (124) and filter (90) to assure that water does not enter the reference chamber (68) through the openings in the closed end (74).
574463
Barbieri Michael G.
Wertheimer Harry P.
Allied-Signal Inc.
Barbieri Michael G.
Macrae & Co.
Wertheimer Harry P.
LandOfFree
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