Electricity: measuring and testing – Magnetic – Displacement
Patent
1992-12-07
1996-04-02
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Displacement
32420724, 137554, G01B 714, F16K 3700
Patent
active
055044263
ABSTRACT:
Electromagnetic field pulses are induced in an electrically conductive/magnetically permeable housing and valving element movable within the housing of a check valve by an energizing coil placed against the housing and forming a loop extending substantially over the full range of travel of the valving element. At least two sensing coils positioned within the loop of the energizing coil proximate the two ends of the range of travel of the valving element, and preferably an array including additional sensing coils spaced between the two end coils, detect transient responses to the induced pulses from which the position of the valving element is determined.
REFERENCES:
patent: 3707672 (1972-12-01), Miller et al.
patent: 4782702 (1988-11-01), Boone et al.
patent: 4929896 (1990-05-01), Lara
patent: 4929898 (1990-05-01), Spies
patent: 4977778 (1990-12-01), Nafziger et al.
patent: 5059902 (1991-10-01), Linder
patent: 5086273 (1992-02-01), Leon
patent: 5198764 (1993-03-01), Spencer
Wittig, G., et al. "Design of a Pulsed Eddy-Current Test Equipment with Digital Signal Analysis" American Society for Testing and Materials, pp. 387-397 1981.
Haynes, H. D., "Check Valves: Oak Ridge's New Diagnostics" Medical Engineering May 1991, pp. 64-69.
Gibbs, et al. "Pulsed Eddy Current Inspection of Cracks Under Installed Fasteners" Materials Evaluation-Jan. 1991 pp. 51-60 Staveley Instruments Inc. Brochure Nortec 30 Eddyscan.
Burton Charles A.
Eslinger Rodney M.
Hill Gary L.
Ricci Roy J.
Maire D. G.
Snow Walter E.
Westinghouse Electric Corporation
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