Patent US3527251A successfully refreshed from Google Patents.
US3723737A
Expired / Lapsed
US
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Infrared detection and control device
Assignee: Boeing North American Inc
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Filing: 1971-05-18
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Granted: 1973-03-27
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Expires: 1991-05-18
Abstract
Abstract An electronic detection and control device comprising a first electronic circuit means having its input connected to an electrical source, the output of said first electronic circuit means connected to at least one radiation-emitting semiconductor device, said first electronic circuit means adapted to provide electrical energy to said semiconductor device to excite said semiconductor device to produce a radiated signal, said radiated signal defining a radiation screen, a radiation-sensing semiconductor device whose input is adapted to receive said radiated signal, the output of said radiation-sensing semiconductor device connected to a second circuit means, said second circuit means adapted to provide an output signal responsive to the presence or absence of any obstruction in said electronic screen, or responsive to the presence or absence of any ambient radiated energy received by said radiation-sensing semiconductor device.
Inventors
- 👤 S Gupta
- 👤 M Zeldman
- 👤 E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
F; F16; F16P; F16P3/00; F16P3/12; F16P3/14; F16P3/144
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
174 words
An electronic detection and control device comprising a first electronic circuit means having its input connected to an electrical source, the output of said first electronic circuit means connected to at least one radiation-emitting semiconductor device, said first electronic circuit means adapted to provide electrical energy to said semiconductor device to excite said semiconductor device to produce a radiated signal, said radiated signal defining a radiating screen, a radiation sensing semiconductor device whose input is adapted to receive said radiated signal, the output of said radiation sensing semiconductor device connected to a second circuit means, said second circuit means adapted to provide an output signal responsive to the presence of absence of any obstruction in said electronic screen, or responsive to the presence or absence of any ambient radiated energy received by said radiation sensing semiconductor device, said first circuit means is adapted to provide an output signal responsive to an open or short condition in any of the components or circuits of said device and responsive to any failure of said electrical source.
Claim 2
Dependent Claim
174 words
An electronic detection and control device comprising a first electronic circuit means having its input connected to an electrical source, the output of said first electronic circuit means connected to at least one radiation-emitting semiconductor device, said first electronic circuit means adapted to provide electrical energy to said semiconductor device to excite said semiconductor device to produce a radiated signal, said radiated signal defining a radiating screen, a radiation sensing semiconductor device whose input is adapted to receive said radiated signal, the output of said radiation sensing semiconductor device connected to a second circuit means, said second circuit means adapted to provide an output signal responsive to the presence of absence of any obstruction in said electronic screen, or responsive to the presence or absence of any ambient radiated energy received by said radiation sensing semiconductor device, said first circuit means is adapted to provide an output signal responsive to an open or short condition in any of the components or circuits of said device and responsive to any failure of said electrical source.
Claim 3
Dependent Claim
38 words
An electronic detection and control device in accordance with claim 1 wherein said first circuit means is further provided with electronic timing means whose output signal controls the timing of the output of the first electronic circuit means.
Claim 4
Dependent Claim
139 words
An electronic detection and control device in accordance with claim 2 wherein said second circuit means is further provided with means to amplify the output signal of said radiation-sensing semiconductor device and means to then steer and invert the thus amplified signal and means to then suppress stray electrical signals and means to then increase the duration of the signal, said electronic timing means further providing an output signal which is increased in duration by a third electronic circuit means, a fourth circuit means to electronically compare the time coincidence of the output signals of said second circuit means with the output signal of said third circuit means, whereby said fourth circuit means will provide an output signal responsive to whether or not said output signals of said second and third circuit means are coincident with respect to time.
Claim 5
Dependent Claim
20 words
An electronic detection and control device in accordance with claim 3 wherein said first electronic circuit means is an oscillator.
Claim 6
Dependent Claim
32 words
An electronic detection and control device in accordance with claim 4 wherein said oscillator is in series with said radiation-emitting semiconductor device, and wherein said radiation-emitting semiconductor device is an infrared diode.
Claim 7
Dependent Claim
29 words
An electronic detection and control device in accordance with claim 3 wherein the output signal of said fourth circuit means will control the control device of an associated apparatus.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |