Patent US3128840A successfully refreshed from Google Patents.
US3128840A
Expired / Lapsed
US
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Random control for power-driven unit
Assignee: BARRETT ELECTRONICS CORP
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Filing: 1962-04-23
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Granted: 1964-04-14
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Expires: 1982-04-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur M Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/006; A01D34/008; A01B; A01B69/00; A01B69/007; A01B69/008; G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0259; G05D1/0265; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
FOR USE IN A GUIDANCE SYSTEM IN WHICH A SIGNALRADIATING BOUNDARY-DEFINING MEANS SUBSTANTIALLY ENCLOSES AN AREA TO BE TRAVERSED BY A MOBILE UNIT HAVING BOTH PROPULSION MEANS AND STEERING MEANS, THE COMBINATION OF CONTROL MEANS ON SAID MOBILE UNIT INCLUDING SENSING MEANS FOR PROVIDING OUTPUT SIGNALS FROM THE SIGNALS RADIATED BY SAID BOUNDARY-DEFINING MEANS HAVING CHARACTERISTICS WHICH VARY WITH THE POSITION OF THE UNIT RELATIVE TO THE BOUNDARYDEFINING MEANS, AND SIGNAL RESPONSIVE MEANS INCLUDING STEERING CONTROL MEANS OPERATIVELY CONTROLLED TO ADJUST THE POSITION OF SAID STEERING MEANS, AND SWITCHING MEANS HAVING A FIRST POSITION FOR COUPLING THE GENERATED STEERING SIGNALS TO SAID SIGNAL RESPONSIVE MEANS TO CONTROL SAME TO MAINTAIN SAID UNIT ON A COURSE DEFINED BY SAID BOUNDARYDEFINING MEANS, AND A SECOND POSITION FOR COUPLING SAID GENERATED STEERING SIGNALS TO SAID SIGNAL RESPONSIVE MEANS TO CONTROL SAME TO TURN SAID UNIT TO A COURSE DIRECTED AWAY FROM SAID BOUNDARY DEFINING MEANS RESPONSIVE TO DETECTION OF A SIGNAL THEREFROM BY SAID SENSING MEANS.
Claim 2
Dependent Claim
163 words
FOR USE IN A GUIDANCE SYSTEM IN WHICH A SIGNALRADIATING BOUNDARY-DEFINING MEANS SUBSTANTIALLY ENCLOSES AN AREA TO BE TRAVERSED BY A MOBILE UNIT HAVING BOTH PROPULSION MEANS AND STEERING MEANS, THE COMBINATION OF CONTROL MEANS ON SAID MOBILE UNIT INCLUDING SENSING MEANS FOR PROVIDING OUTPUT SIGNALS FROM THE SIGNALS RADIATED BY SAID BOUNDARY-DEFINING MEANS HAVING CHARACTERISTICS WHICH VARY WITH THE POSITION OF THE UNIT RELATIVE TO THE BOUNDARYDEFINING MEANS, AND SIGNAL RESPONSIVE MEANS INCLUDING STEERING CONTROL MEANS OPERATIVELY CONTROLLED TO ADJUST THE POSITION OF SAID STEERING MEANS, AND SWITCHING MEANS HAVING A FIRST POSITION FOR COUPLING THE GENERATED STEERING SIGNALS TO SAID SIGNAL RESPONSIVE MEANS TO CONTROL SAME TO MAINTAIN SAID UNIT ON A COURSE DEFINED BY SAID BOUNDARYDEFINING MEANS, AND A SECOND POSITION FOR COUPLING SAID GENERATED STEERING SIGNALS TO SAID SIGNAL RESPONSIVE MEANS TO CONTROL SAME TO TURN SAID UNIT TO A COURSE DIRECTED AWAY FROM SAID BOUNDARY DEFINING MEANS RESPONSIVE TO DETECTION OF A SIGNAL THEREFROM BY SAID SENSING MEANS.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |