Patent US3113451A successfully refreshed from Google Patents.
US3113451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft flutter testing device
Assignee: North American Aviation Corp
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Filing: 1959-05-15
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Granted: 1963-12-10
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Expires: 1979-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Vaughn L R Beals
- 👤 Stanley R Harley
- 👤 William R Laidlaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:16
CPC Classifications
G; G01; G01M; G01M7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
TEST APPARATUS FOR USE WITH AN AIRCRAFT FLIGHT SURFACE TO INDUCE AND MEASURE FIRST BENDING OF SAID FLIGHT SURFACE ABOUT A FIRST BENDING AXIS, AND COMPRISING: AN ELECTRICALLY PRIMED IMPULSE FORCING DEVICE, FASTENER MEANS SECURING SAID FORCING DEVICE TO SAID FLIGHT SURFACE ADJACENT A FIRST BENDING ANTI-NODAL REGION LOCATED INTERMEDIATE SAID FIRST BENDING AXIS AND AN OUTBOARD EXTREME OF SAID FLIGHT SURFACE, ELECTRICAL PRIMING MEANS CONNECTED TO SAID FORCING DEVICE, AND TRANSDUCER MEANS SECURED TO SAID FLIGHT SURFACE
Claim 2
Dependent Claim
78 words
TEST APPARATUS FOR USE WITH AN AIRCRAFT FLIGHT SURFACE TO INDUCE AND MEASURE FIRST BENDING OF SAID FLIGHT SURFACE ABOUT A FIRST BENDING AXIS, AND COMPRISING: AN ELECTRICALLY PRIMED IMPULSE FORCING DEVICE, FASTENER MEANS SECURING SAID FORCING DEVICE TO SAID FLIGHT SURFACE ADJACENT A FIRST BENDING ANTI-NODAL REGION LOCATED INTERMEDIATE SAID FIRST BENDING AXIS AND AN OUTBOARD EXTREME OF SAID FLIGHT SURFACE, ELECTRICAL PRIMING MEANS CONNECTED TO SAID FORCING DEVICE, AND TRANSDUCER MEANS SECURED TO SAID FLIGHT SURFACE
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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |