Measuring and testing – Gas analysis – Gas chromatography
Patent
1983-07-18
1985-07-23
Kreitman, Stephen A.
Measuring and testing
Gas analysis
Gas chromatography
73 30, 62 37, 62125, 62126, G01N 700
Patent
active
045302332
ABSTRACT:
A flow tube to distinguish between different gases or gas mixtures flowing through the tube, the tube being sized so that a first or control gas or gas mixture is selected and the properties of the control gas or gas mixture are such that when the control gas or gas mixture flows through the tube a shock wave of a given magnitude is formed at the discharge end of the tube. A second gas flowing in the tube forms a shock wave of different magnitude at the discharge end of the tube; detection of a difference in the magnitude of the shock wave being the operative distinguishing means.
REFERENCES:
patent: 1633352 (1927-06-01), Tate
patent: 1884896 (1932-10-01), Smith
patent: 2263335 (1941-11-01), Heinz
patent: 2331208 (1943-10-01), Ludi
patent: 2619107 (1952-11-01), Graham
patent: 2722121 (1955-11-01), Fisher
patent: 2737973 (1956-03-01), Kimmell
patent: 2954841 (1960-10-01), Reistle
patent: 3086386 (1963-04-01), Kapff
patent: 3181574 (1965-05-01), Lenkey et al.
patent: 3334513 (1967-08-01), Thomas
patent: 3340699 (1967-09-01), Post et al.
patent: 3403522 (1968-10-01), Henry
patent: 3447359 (1969-06-01), Kapff
patent: 3517685 (1970-06-01), Eastman
patent: 3526276 (1970-09-01), Bennett et al.
patent: 3636720 (1972-01-01), Krieve
patent: 3642017 (1972-02-01), Homes
patent: 3817085 (1974-06-01), Stubbs
patent: 3979958 (1976-09-01), Janssen et al.
patent: 4033171 (1977-07-01), Karas et al.
patent: 4186590 (1980-02-01), Egorov et al.
F. Biermans and J. Nihoul, A Simple and Continusos Level Indicator for Liquefied Gases, 3/15/62, 243, Research and Technical Note.
W. A. Wildhack, A Versatile Pneumatic Instrument Based on Critical Flow, Jan. 1950, vol. 21, No. 1, pp. 25-30, The Review of Scientific Instruments.
Air Products and Chemicals Inc.
Innis E. Eugene
Kreitman Stephen A.
Simmons James C.
LandOfFree
Method and apparatus for distinguishing between different gas or does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for distinguishing between different gas or, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for distinguishing between different gas or will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-629439