Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1976-05-06
1978-05-30
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
204195B, 204 1T, 1951035R, 1951035C, G01N 2746
Patent
active
040922332
ABSTRACT:
An improved apparatus is described wherein a semi-permeable membrane is supported against a convex surface and wherein the likelihood of damage to such membrane during mounting and use is minimized. In the apparatus the membrane is stretched over the convex surface of a first member in a manner allowing, during assembly of the apparatus, any fluid located between the membrane and the convex surface to escape therefrom around the edges of the membrane. The membrane is clamped between the convex surface of said first member and a complemental concave surface of a second member such that the membrane is held in stretched relationship against and in close contact with the convex surface. Means is provided to form a fluid-tight seal between said membrane and said second member.
In a preferred embodiment, the membrane is used in a polarographic electrode apparatus used to detect specific components of a fluid sample.
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patent: 3997420 (1976-12-01), Buzza
Clark, "Reprint from Annals of the New York Academy of Sciences", vol. 102, Art. 1, pp. 29-45, Oct. 1962.
Chang Peter Hon
Clemens Anton Hubert
Davidson L. E.
Miles Laboratories Inc.
Tung T.
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