Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1993-07-02
1994-04-26
Housel, James C.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
422 99, 422100, 422102, 436809, 436810, 206562, 206563, 211 74, 435809, B01L 906
Patent
active
053064690
ABSTRACT:
A holder is pneumatically actuated to grasp and hold a plurality of sample containers during an analytical process which requires movement of the containers. The holder comprises a body having holes therein for receiving the caps and upper portions of the containers. Within each hole is a rigid cylindrical element and within each rigid element is a flexible tubular element. The outer diameter of the flexible element is smaller than the inner diameter of the rigid element so that a pneumatically sealed chamber is formed between the two elements when the ends of the flexible element are folded back over the ends and outer surface of the rigid element. The holder body and the rigid element are provided with holes forming a fluid passage through which positive and negative pressures may be applied to the chamber. When a negative pressure is applied to the chamber to draw the flexible element outward toward the rigid element, the cap and upper portion may move freely into the flexible element. When a positive pressure is applied to the chamber to expand the chamber by moving the flexible element inwardly, the flexible element grips both the cap and upper portion of a container thereby reducing the chances that the cap and container will separate.
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Abbott Laboratories
Housel James C.
Pyon Harold Y.
Schmidt Richard D.
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