Automated clamp-on sample chamber for flow porometry and a method of using same
Patent No. 7,210,335
Issued: May 1, 2007
Inventors: Gupta; Krishna M. (Ithaca, NY), Jena; Akshaya (Ithaca, NY), Wilson; William (Anniston, AL)
A sample chamber includes a movable upper chamber. The movable upper chamber includes a center bore opening to a bottom of the chamber, at least one port for introduction of gas under pressure to the center bore, and a first annular seal around the center bore. A stationary lower seat opposing the upper chamber has a center bore aligned with the upper chamber, and includes an exhaust and a second annular seal around the center bore. A test material is placed between the upper chamber and the lower seat. An actuator moves the upper chamber. When the upper chamber is moved down with the first annular seal in contact with an upper surface of a sample of the material and the second annular seal in contact with a lower surface of the sample, gas introduced to the upper chamber goes through the upper chamber and out through the exhaust.
REFERENCE TO RELATED APPLICATIONS
This application claims an invention which was disclosed in Provisional Application No. 60/570,515, filed May 12, 2004, entitled "AUTOMATED CLAMP-ON SAMPLE CHAMBER FOR FLOW POROMETRY AND A METHOD OF USING SAME ". The benefit under 35 USC .sctn.119(e) of the United States provisional application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference.
In addition, this application is a continuation in part of U.S. application Ser. No. 10/826,095, filed on Apr. 16, 2004 now abandoned, entitled "AUTOMATED CLAMP-ON SAMPLE CHAMBER FOR FLOW POROMETRY AND A METHOD OF USING SAME". The aforementioned application is hereby incorporated by reference.
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