US3132710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle ground guidance system
Assignee: EW Bliss Co Inc
•
Filing: 1960-08-03
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Granted: 1964-05-12
•
Expires: 1980-08-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Petrella
- 👤 John S Strance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0083; B; B64; B64F; B64F1/00; B64F1/002; B64F1/04; B64F1/22; B64F1/223; B64F1/225; B64F1/228; G05D1/02; G05D1/021; G05D1/0259; G05D1/0265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A VEHICLE GROUND GUIDANCE SYSTEM COMPRISING A PATHDEFINING UNIT AND A VEHICLE-DIRECTING UNIT, SAID PATH-DEFINING UNIT INCLUDING A PAIR OF CONDUCTORS ARRANGED TO DEFINE THE LATERAL BOUNDARIES OF A PREDETERMINED GROUND PATH, MEANS FOR ELECTRICALLY INTERCONNECTING SAID CONDUCTORS TO FORM A CLOSED CIRCUIT LOOP, AND GENERATOR MEANS FOR CAUSING ALTERNATING ELECTRICAL CURRENT TO FLOW IN SAID LOOP, SAID VEHICLEDIRECTING UNIT INCLUDING, AN ELECTRICAL SUBSTANTIALLY HORIZONTALLY ARRANGED PICK-UP COIL, AN ELECTRICAL SUBSTANTIALLY VERTICALLY ARRANGED PICK-UP COIL, CIRCUIT MEANS FOR COMPARING THE PHASE OF THE OUTPUT SIGNALS DERIVED FROM SAID PICK-UP COILS, AND STEERING MEANS RESPONSIVE TO THE RESULTS OF SAID PHASE COMPARISON FOR MAINTAINING SAID VEHICLE WITHIN THE PATH DEFINED BY SAID CONDUCTORS.
Claim 2
Dependent Claim
112 words
A VEHICLE GROUND GUIDANCE SYSTEM COMPRISING A PATHDEFINING UNIT AND A VEHICLE-DIRECTING UNIT, SAID PATH-DEFINING UNIT INCLUDING A PAIR OF CONDUCTORS ARRANGED TO DEFINE THE LATERAL BOUNDARIES OF A PREDETERMINED GROUND PATH, MEANS FOR ELECTRICALLY INTERCONNECTING SAID CONDUCTORS TO FORM A CLOSED CIRCUIT LOOP, AND GENERATOR MEANS FOR CAUSING ALTERNATING ELECTRICAL CURRENT TO FLOW IN SAID LOOP, SAID VEHICLEDIRECTING UNIT INCLUDING, AN ELECTRICAL SUBSTANTIALLY HORIZONTALLY ARRANGED PICK-UP COIL, AN ELECTRICAL SUBSTANTIALLY VERTICALLY ARRANGED PICK-UP COIL, CIRCUIT MEANS FOR COMPARING THE PHASE OF THE OUTPUT SIGNALS DERIVED FROM SAID PICK-UP COILS, AND STEERING MEANS RESPONSIVE TO THE RESULTS OF SAID PHASE COMPARISON FOR MAINTAINING SAID VEHICLE WITHIN THE PATH DEFINED BY SAID CONDUCTORS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |