Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With waveguide or long line
Patent
1979-11-19
1982-10-12
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With waveguide or long line
219 1055D, 219 1055M, 343703, 343853, G01R 2104, H05B 906
Patent
active
043541534
ABSTRACT:
A stationary microwave leakage detector and method for testing microwave ovens for the maximum power density of microwaves leaking through the oven's door seals. The leakage detector is composed of an array of antennae arranged in a line generally circumscribing the circumference of the door at a fixed distance therefrom. The antennae are spaced apart a predetermined maximum distance thus insuring that a given antennae will sense at least a portion of the narrowest possible beam of microwaves emitting from the periphery of the door. Furthermore, the spacing and arrangement of the array vis-a-vis the oven door insure that the minimum power density observed by an antenna is a known ratio of the maximum power density of a narrowest beam possibly incident thereon, thus providing a means to guarantee from the measured power density levels that there are no microwaves leaking from the oven under test greater than a certain maximum power density. Alternately, the antennae are spaced such that the sum of any two adjacent antennae will be equal to or greater than the maximum power density of a narrowest beam possibly incident upon one of them. This antenna spacing provides a stationary method for testing microwave ovens for the maximum power density of microwaves leaking through the oven's door seals.
REFERENCES:
patent: 2509045 (1950-05-01), Salisbury
patent: 3746824 (1973-07-01), Prucha
patent: 3760271 (1973-09-01), Bach, Jr. et al.
patent: 3794914 (1974-02-01), Aslan
patent: 3828251 (1974-08-01), Webb
patent: 3879743 (1975-04-01), Barton
patent: 3989994 (1976-11-01), Brown
patent: 4072899 (1978-02-01), Shimp
patent: 4074274 (1978-02-01), Fujita et al.
"HI2610 Scanning System"; Holaday Industries, Inc., Hopkins, Minn.; 2-7-77; 6 pages.
Harrington, R. F.; "Time Harmonic Electromagnetic Fields"; McGraw-Hill, New York, N.Y.; 1961; pp. 110-111.
Butler et al.; "Electromagnetic . . . "; IEEE Trans. on Antennae and Propagation; vol. AP-26; No. 1; Jan. 1978; pp. 82-93.
Haurykiewicz John M.
Karlsen Ernest F.
Litton Systems Inc.
Lowe Robert E.
LandOfFree
Microwave oven leakage detector and method of using same to test does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microwave oven leakage detector and method of using same to test, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave oven leakage detector and method of using same to test will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-225348