Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1995-12-26
1997-07-29
Snay, Jeffrey
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
422103, 22020321, 220281, 220361, 215312, B01L 300
Patent
active
056519400
ABSTRACT:
The sealing apparatus of the present invention is a sample cuvette cap having a hole for inserting the nozzle of an auto-sampler therethrough. Located within the lumen of the hole is a small detent ball that can be positioned to block the lumen. The detent ball, which can be spring-operated or gravity-operated, blocks the fluid flow in the hole in its normal, closed position. When the auto-sampler nozzle hits the ball, the ball becomes deflected to one side into a recess, due to a difference in the nozzle axis relative to the center of the ball. By the dislocating the detent ball, the nozzle can be inserted into the cuvette smoothly as the air goes in and out through the space around the nozzle. This allows the pressure in the cuvette to be kept constant. After the nozzle is removed, the ball returns to its original position by gravity or by the force of a spring, resealing the cuvette. All of the parts for the sealing apparatus are solid parts which can be easily cleaned and reused. Because there is no non-recoverable distortion or damage to the sealing mechanism, it can be re-used after cleaning.
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Buonaiuto Val
Nogami Taro
Hitachi Instruments, Inc.
Sideris John J.
Snay Jeffrey
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