US3143319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the control of an aircraft's speed
Assignee: Smiths America Corp
•
Filing: 1960-02-26
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Granted: 1964-08-04
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Expires: 1980-02-26
Abstract
No abstract record available.
Inventors
- 👤 Gorham John Anthony David
- 👤 Legg Reginald Charles Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:21
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0615; G05D1/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
APPARATUS FOR THE CONTROL OF THE SPEED OF AN AIRCRAFT WHICH HAS MEANS FOR APPLYING A PROPULSIVE THRUST TO THE AIRCRAFT AND MEANS FOR VARYING THE MAGNITUDE OF SAID THRUST, THE APPARATUS COMPRISING MEANS FOR GENERATING A FIRST SIGNAL IN ACCORDANCE WITH ANY DEVIATION OF THE AIRCRAFT''S SPEED FROM A DATUM VALUE, MEANS FOR GENERATING A SECOND SIGNAL DEPENDENT UPON THE RATE OF PITCH OF THE AIRCRAFT, CONTROL MEANS FOR ACTUATING SAID THRUST VARYING MEANS AND MEANS FOR APPLYING SAID FIRST AND SECOND SIGNALS ADDITIVELY TO SAID CONTROL MEANS, THE CONTROL MEANS BEING ADAPTED TO RESPOND TO THE SUM OF SAID APPLIED SIGNALS TO ACTUATE SAID THRUST VARYING MEANS TO VARY THE PROPULSIVE THRUST IN THE MANNER REQUIRED TO REDUCE SAID DEVIATION TOWARDS ZERO.
Claim 2
Dependent Claim
124 words
APPARATUS FOR THE CONTROL OF THE SPEED OF AN AIRCRAFT WHICH HAS MEANS FOR APPLYING A PROPULSIVE THRUST TO THE AIRCRAFT AND MEANS FOR VARYING THE MAGNITUDE OF SAID THRUST, THE APPARATUS COMPRISING MEANS FOR GENERATING A FIRST SIGNAL IN ACCORDANCE WITH ANY DEVIATION OF THE AIRCRAFT''S SPEED FROM A DATUM VALUE, MEANS FOR GENERATING A SECOND SIGNAL DEPENDENT UPON THE RATE OF PITCH OF THE AIRCRAFT, CONTROL MEANS FOR ACTUATING SAID THRUST VARYING MEANS AND MEANS FOR APPLYING SAID FIRST AND SECOND SIGNALS ADDITIVELY TO SAID CONTROL MEANS, THE CONTROL MEANS BEING ADAPTED TO RESPOND TO THE SUM OF SAID APPLIED SIGNALS TO ACTUATE SAID THRUST VARYING MEANS TO VARY THE PROPULSIVE THRUST IN THE MANNER REQUIRED TO REDUCE SAID DEVIATION TOWARDS ZERO.
References Cited (Backward Citations)
US2630987A
Cited
US2620439A
Cited
US2743361A
Cited
US2799461A
Cited
US2953327A
Cited
US2948496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |