US4338595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave leakage detector
Assignee: MICROWAVE RADIATION DETECTION Corp
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Filing: 1980-09-09
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Granted: 1982-07-06
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Expires: 2000-09-09
Abstract
Abstract A portable microwave leakage detector comprises a dipole antenna and a hot carrier diode connected in parallel with a light emitting diode, the circuit incorporating minimum solder joints and affording maximum sensitivity without moving parts such that the detector circuit does not decay with time. The dipole antenna is oriented diagonally in a detector case so that the user of the detector automatically presents the antenna to the radiating microwave field (or leakage field) at a maximum receiving attitude with respect to the field. The detector can be utilized to determine whether a microwave oven or any other device is leaking radiation beyond limits imposed by the Food and Drug Administration.
Inventors
- 👤 Daniel D. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:08
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6432; G; G01; G01R; G01R27/00; G01R27/02; G01R27/04; G01R29/00; G01R29/08; G01R29/0807; G01R29/0814; H05B6/6447
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
66 words
A microwave radiation detector comprising: a detector casing; sensing means provided in said casing for sensing radiation; display means connected to said sensing means for indicatng the presence of radiation; and means orienting said detector for insuring that the maximum amount of radiation emanating from a particular source is sensed by said sensing means, said sensing means and said display means containing only two electrical connections.
Claim 2
Dependent Claim
66 words
A microwave radiation detector comprising: a detector casing; sensing means provided in said casing for sensing radiation; display means connected to said sensing means for indicatng the presence of radiation; and means orienting said detector for insuring that the maximum amount of radiation emanating from a particular source is sensed by said sensing means, said sensing means and said display means containing only two electrical connections.
Claim 3
Dependent Claim
46 words
A microwave radiation detector in accordance with claim 1 wherein said sensing means comprises a dipole antenna and said display means includes a hot carrier diode connected in parallel with an LED, and whereby said dipole antenna is connected in series with said hot carrier diode.
Claim 4
Dependent Claim
23 words
A microwave radiation detector in accordance with claim 1 wherein said orienting means includes indicia provided on the face of said detector casing.
Claim 5
Dependent Claim
30 words
A microwave radiation detector in accordance with claim 2 or 3 wherein said detector casing contains a rectangular face plate and said dipole antenna extends diagonally of said face plate.
Claim 6
Dependent Claim
35 words
A microwave radiation detector comprising: sensing means for sensing radiation; and display means connected to said sensing means for indicating the presence of radiation, said sensing and said display means containing only two electrical connections.
Claim 7
Dependent Claim
35 words
A microwave radiation detector comprising: sensing means for sensing radiation; and display means connected to said sensing means for indicating the presence of radiation, said sensing and said display means containing only two electrical connections.
Claim 8
Dependent Claim
44 words
A microwave radiation detector in accordance with claim 5 wherein said sensing means comprises a dipole antenna and said display means includes a hot carrier diode connected in parallel with an LED, said dipole antenna being connected in series with said hot carrier diode.
Claim 9
Dependent Claim
36 words
A microwave radiation detector in accordance with claim 5 including means orienting said sensing means in an attitude insuring that the maximum amount of radiation emanating from a particular source is sensed by said sensing means.
Claim 10
Dependent Claim
25 words
A microwave radiation detector in accordance with claim 7 further including a detector casing within which said sensing means and said display means are provided.
Claim 11
Dependent Claim
23 words
A microwave radiation detector in accordance with claim 8 wherein said orienting means includes indicia provided on a face of said detector casing.
Claim 12
Dependent Claim
40 words
A microwave radiation detector in accordance with claim 9 where in said detector casing contains a rectangular face plate, said sensing means consisting of a dipole antenna, and said dipole antenna extending diagonally with respect to said rectangular face plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |