US3141634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drone control system
Assignee: Northrop Grumman Corp
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Filing: 1951-03-23
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Granted: 1964-07-21
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Expires: 1971-03-23
Abstract
No abstract record available.
Inventors
- 👤 Rex V Rhoades
- 👤 Stevens Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0011; G05D1/0033; Y; Y10; Y10S; Y10S261/00; Y10S261/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A PULSE-OPERATED REMOTE CONTROL SYSTEM FOR AN AIRCRAFT HAVING A CONTROL MEMBER MOVABLE IN EITHER OF TWO DIRECTIONS, WHICH COMPRISES REMOTE MEANS FOR TRANSMITTING A FIRST CONTROL SIGNAL AT A FIRST FREQUENCY IN THE FORM OF PULSES EACH COMPRISING A SUBSTANTIAL NUMBER OF CYCLES AT SAID FIRST FREQUENCY, REMOTE MEANS FOR TRANSMITTING A SECOND SIMILAR CONTROL SIGNAL AT A SECOND FREQUENCY, ELECTRICALLY OPERATED STEPPING MEANS HAVING A POSITIVE DRIVING CONNECTION WITH SAID CONTROL MEMBER AND CONNECTED IN RESPECTIVE RECEIVING SELECTOR CIRCUITS TO BE ENERGIZED AND MOVED ONE STEP IN ONE DIRECTION ONLY WHEN ONE PULSE OF SAID FIRST CONTROL SIGNAL IS TRANSMITTED AND TO BE MOVED ONE STEP IN THE OPPOSITE DIRECTION ONLY WHEN ONE PULSE OF SAID SECOND CONTROL SIGNAL IS TRANSMITTED, SAID STEPPING MEANS AND SAID CONTROL MEMBER HAVING A COMMON REFERENCE INDEX POSITION, REMOTE MEANS FOR TRANSMITTING A THIRD SIMILAR CONTROL SIGNAL AT A THIRD FREQUENCY, AND INDEXING MEANS OPERATIVE IN RESPONSE TO ONE PULSE SIGNAL AT SAID THIRD FREQUENCY TO MOVE SAID STEPPING MEANS INTO SAID INDEX POSITION IF NOT ALREADY THERE.
Claim 2
Dependent Claim
176 words
A PULSE-OPERATED REMOTE CONTROL SYSTEM FOR AN AIRCRAFT HAVING A CONTROL MEMBER MOVABLE IN EITHER OF TWO DIRECTIONS, WHICH COMPRISES REMOTE MEANS FOR TRANSMITTING A FIRST CONTROL SIGNAL AT A FIRST FREQUENCY IN THE FORM OF PULSES EACH COMPRISING A SUBSTANTIAL NUMBER OF CYCLES AT SAID FIRST FREQUENCY, REMOTE MEANS FOR TRANSMITTING A SECOND SIMILAR CONTROL SIGNAL AT A SECOND FREQUENCY, ELECTRICALLY OPERATED STEPPING MEANS HAVING A POSITIVE DRIVING CONNECTION WITH SAID CONTROL MEMBER AND CONNECTED IN RESPECTIVE RECEIVING SELECTOR CIRCUITS TO BE ENERGIZED AND MOVED ONE STEP IN ONE DIRECTION ONLY WHEN ONE PULSE OF SAID FIRST CONTROL SIGNAL IS TRANSMITTED AND TO BE MOVED ONE STEP IN THE OPPOSITE DIRECTION ONLY WHEN ONE PULSE OF SAID SECOND CONTROL SIGNAL IS TRANSMITTED, SAID STEPPING MEANS AND SAID CONTROL MEMBER HAVING A COMMON REFERENCE INDEX POSITION, REMOTE MEANS FOR TRANSMITTING A THIRD SIMILAR CONTROL SIGNAL AT A THIRD FREQUENCY, AND INDEXING MEANS OPERATIVE IN RESPONSE TO ONE PULSE SIGNAL AT SAID THIRD FREQUENCY TO MOVE SAID STEPPING MEANS INTO SAID INDEX POSITION IF NOT ALREADY THERE.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |