US3272982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared remote controller
Assignee: Individual
•
Filing: 1963-03-26
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Granted: 1966-09-13
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 John K Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/02; B61L3/06; B61L3/065; B60; B60L; B60L3/00; G; G01; G01S; G01S11/00; G01S11/12; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
DISTANCE CONTROL MEANS FOR USE IN A RAILROAD SURVEYING SYSTEM INCLUDING A MAIN RAIL CAR AND A SATELLITE RAIL CAR HAVING A PRIME MOVER, WHICH CONTROL MEANS COMPRISES A HIGH FREQUENCY BEAM SOURCE; MEANS ON THE MAIN CAR FOR DIRECTING A COMMAND HIGH FREQUENCY BEAM TOWARDS THE SATELLITE RAIL CAR; A BEAM RECEIVER ON SAID SATELLITE RAIL CAR TO RECEIVE THE COMMAND HIGH FREQUENCY BEAM; AND MEANS ON THE SATELLITE RAIL CAR RESPONSIVE TO THE INTENSITY OF THE RECEIVED BEAM TO CONTROL THE PRIME MOVER TO SELECTIVELY DRIVE THE SATELLITE CAR TOWARDS OR AWAY FROM SAID MAIN RAIL CAR, WHEREBY TO REGULATE THE DISTANCE THEREBETWEEN.
Claim 2
Dependent Claim
105 words
DISTANCE CONTROL MEANS FOR USE IN A RAILROAD SURVEYING SYSTEM INCLUDING A MAIN RAIL CAR AND A SATELLITE RAIL CAR HAVING A PRIME MOVER, WHICH CONTROL MEANS COMPRISES A HIGH FREQUENCY BEAM SOURCE; MEANS ON THE MAIN CAR FOR DIRECTING A COMMAND HIGH FREQUENCY BEAM TOWARDS THE SATELLITE RAIL CAR; A BEAM RECEIVER ON SAID SATELLITE RAIL CAR TO RECEIVE THE COMMAND HIGH FREQUENCY BEAM; AND MEANS ON THE SATELLITE RAIL CAR RESPONSIVE TO THE INTENSITY OF THE RECEIVED BEAM TO CONTROL THE PRIME MOVER TO SELECTIVELY DRIVE THE SATELLITE CAR TOWARDS OR AWAY FROM SAID MAIN RAIL CAR, WHEREBY TO REGULATE THE DISTANCE THEREBETWEEN.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |