US3302167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airspeed warning device
Assignee: ASTEK INSTRUMENT CORP
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Filing: 1965-06-22
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Granted: 1967-01-31
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Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:25
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P1/00; G01P1/07; G01P1/08; G01P1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN AIRSPEED WARNING INDICATOR FOR USE IN AIRCRAFT COMPRISING MEANS RESPONSIVE TO ALTITUDE, COOPERATING MEANS RESPONSIVE TO AIRSPEED, A PAIR OF MOVABLE CONTACTS, MEANS FOR RENDERING ONE OF SAID CONTACTS MOVABLE IN RESPONSE TO SAID ALTITUDE MEANS, MEANS FOR RENDERING THE OTHER CONTACT MOVABLE IN RESPONSE TO SAID COOPERATING AIRSPEED RESPONSIVE MEANS, MEANS FOR MAINTAINING SAID CONTACTS NORMALLY CLOSED DURING PERMISSIVE AIRSPEEDS FOR A GIVEN ALTITUDE, AND SAID CONTACTS BEING OPENED BY SAID AIRSPEED RESPONSIVE MEANS WHEN THE SAFE AIRSPEED IS EXCEEDED AT A MEASURED ALTITUDE, AN INDICATOR CONNECTED IN CIRCUIT WITH SAID PAIR OF CONTACTS, AND MEANS DISPOSED IN SAID CIRCUIT FOR ACTIVATING SAID INDICATOR MEANS WHEN SAID CONTACTS ARE OPENED.
Claim 2
Dependent Claim
112 words
AN AIRSPEED WARNING INDICATOR FOR USE IN AIRCRAFT COMPRISING MEANS RESPONSIVE TO ALTITUDE, COOPERATING MEANS RESPONSIVE TO AIRSPEED, A PAIR OF MOVABLE CONTACTS, MEANS FOR RENDERING ONE OF SAID CONTACTS MOVABLE IN RESPONSE TO SAID ALTITUDE MEANS, MEANS FOR RENDERING THE OTHER CONTACT MOVABLE IN RESPONSE TO SAID COOPERATING AIRSPEED RESPONSIVE MEANS, MEANS FOR MAINTAINING SAID CONTACTS NORMALLY CLOSED DURING PERMISSIVE AIRSPEEDS FOR A GIVEN ALTITUDE, AND SAID CONTACTS BEING OPENED BY SAID AIRSPEED RESPONSIVE MEANS WHEN THE SAFE AIRSPEED IS EXCEEDED AT A MEASURED ALTITUDE, AN INDICATOR CONNECTED IN CIRCUIT WITH SAID PAIR OF CONTACTS, AND MEANS DISPOSED IN SAID CIRCUIT FOR ACTIVATING SAID INDICATOR MEANS WHEN SAID CONTACTS ARE OPENED.
References Cited (Backward Citations)
US2785570A
Cited
US3132323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |