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Fixed sleeve junction reference electrode
| Details |
Inventors: Dufau, Oscar R.;
Assignee: Graphic Controls Corporation (Buffalo, NY)
Primary Examiner: Kaplan; G. L.
Assistant Examiner:
Attorney, Agent or Firm: Berkman; Michael G.
In an electrode of the type having a reservoir for containing a reference electrolyte solution and a liquid junction for effecting electrical communication between said reference electrolyte solution and a sample solution, and including a seat and plug valve assembly of the electrode in communication with the reservoir and a sample solution, an improvement characterized in that a resiliently stressed spring contained within the reservoir biases the plug axially into mating engagement with the valve seat, and in that, upon application of displacement pressure axially against the plug, the latter automatically twists, axially, to execute a partial turn so that a valve-closing face of the plug laps or wipes against the seat and concurrently moves from engagement with the valve seat to open the valve assembly for fluid flow and cleansing flushing therethrough. |
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DETAILED DESCRIPTION What is claimed is: 1.
In an electrode including a tubular housing defining a longitudinally extending bounding wall of a chamber for retaining a fluid therewithin, first end closure means at a first end of said housing for restricting fluid flow from said chamber at said first end thereof, second end closure means for controlling fluid flow from a second end of said chamber displaced axially from said first end thereof; the improvement wherein said second end closure means comprises valve means including annular valve seat means and cooperating valve plug means for fluid-tight mating interengagement, said improvement further comprising spring means biasing said plug means into fluid-retentive, fluid-flow-restricting engagement with said valve seat means, said spring means being responsive to pressure applied to said plug means axially thereof and inwardly of said chamber forcibly to dislodge said valve plug means from said valve seat means thereby to open said valve means.
2.
The improvement as set forth in claim 1 wherein said spring means is responsive to pressure applied axially through said plug means and inwardly of said chamber to effect tensioned axial rotation of said plug means during dislodgement thereof from said seat means.
3.
The improvement as set forth in claim 2 wherein activation of said spring means through application of pressure to said plug means develops torsional rotational forces acting on said plug means.
4.
The improvement as set forth in claim 1 wherein said spring means comprise flexible band means within said chamber and extending lineally in a zone intermediate said plug means and said first end of said tubular housing, and further comprising means coupling said plug means to said band means for transmittal of band-means-deforming force thereto upon application of mechanical pressure axially to said plug means, said band means being resiliently distortable in response to pressure applied axially thereto to establish a rotational force vector in said band means, thereby to shift said plug means through an annular rotational increment upon forced dislodgement of said plug means axially from said valve seat means
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Fuel Cells 
