US3117753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gliding parachute
Assignee: Northrop Grumman Corp
•
Filing: 1961-06-16
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Granted: 1964-01-14
•
Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
- 👤 Edgar G Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:54
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/02; B64D17/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A DIRIGIBLE PARACHUTE COMPRISING A CANOPY, SAID CANOPY HAVING A PAIR OF RADIAL SEPARATIONS CUTTING THE SKIRT OF SAID CANOPY AND EXTENDING FROM THE CANOPY SKIRT TOWARD THE APEX A PREDETERMINED DISTANCE TO FORM A GLIDE CONTROL SURFACE OF AN OUTER PORTION OF A SECTOR OF SAID CANOPY, SAID GLIDE CONTROL SURFACE BEING AT LEAST TWO GORES WIDE.
Claim 2
Dependent Claim
58 words
A DIRIGIBLE PARACHUTE COMPRISING A CANOPY, SAID CANOPY HAVING A PAIR OF RADIAL SEPARATIONS CUTTING THE SKIRT OF SAID CANOPY AND EXTENDING FROM THE CANOPY SKIRT TOWARD THE APEX A PREDETERMINED DISTANCE TO FORM A GLIDE CONTROL SURFACE OF AN OUTER PORTION OF A SECTOR OF SAID CANOPY, SAID GLIDE CONTROL SURFACE BEING AT LEAST TWO GORES WIDE.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |