US3147942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure and loading device
Assignee: Boeing Co
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Filing: 1963-06-06
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Granted: 1964-09-08
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Expires: 1983-06-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:21
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/14; B64C1/1407; B64C1/1415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A CLOSURE AND LOADING DEVICE FOR CLOSING AN OPENING IN AN AIRCRAFT FUSELAGE AND FOR FUNCTIONING AS A CARGO LOADING AND UNLOADING MEANS FROM THE FUSELAGE WHEN THE AIRCRAFT IS ON THE GROUND, SAID DEVICE INCLUDING A RAMP FOR CLOSING A PORTION OF THE OPENING IN THE FUSELAGE, SAID RAMP HAVING EXTENSIBLE MEANS FOR CLOSING THE REMAINDER OF THE OPENING IN THE FUSELAGE, SAID RAMP AND SAID EXTENSIBLE MEANS COOPERATING TO FORM A STREAMLINED CONTINUATION OF THE FUSELAGE IN THEIR CLOSED POSITIONS, AUXILIARLY RAMP MEANS OF SUBSTANTIALLY SMALLER WIDTH THAN THE RAMP AND STORED ON THE RAMP, SAID AUXILIARY RAMP MEANS FORMING AN EXTENSION OF THE RAMP WHEN BOTH THE RAMP AND THE AUXILIARY RAMP MEANS ARE IN THEIR LOADING AND UNLOADING POSITIONS, AND A HINGE PIVOTALLY CONNECTING SAID AUXILIARY RAMP MEANS TO SAID RAMP, SAID HINGE INCLUDING MEANS TO PERMIT LATERAL ADJUSTMENT OF SAID AUXILIARY RAMP MEANS WITH RESPECT TO SAID RAMP, SAID HINGE HAVING MEANS TO POSITION SAID AUXILIARY RAMP MEANS TO PROVIDE A SMOOTH CONTINUATION OF SAID RAMP TO THE GROUND WHEN THE RAMP AND THE AUXILIARY RAMP MEANS ARE IN THEIR LOADING AND UNLOADING POSITIONS.
Claim 2
Dependent Claim
189 words
A CLOSURE AND LOADING DEVICE FOR CLOSING AN OPENING IN AN AIRCRAFT FUSELAGE AND FOR FUNCTIONING AS A CARGO LOADING AND UNLOADING MEANS FROM THE FUSELAGE WHEN THE AIRCRAFT IS ON THE GROUND, SAID DEVICE INCLUDING A RAMP FOR CLOSING A PORTION OF THE OPENING IN THE FUSELAGE, SAID RAMP HAVING EXTENSIBLE MEANS FOR CLOSING THE REMAINDER OF THE OPENING IN THE FUSELAGE, SAID RAMP AND SAID EXTENSIBLE MEANS COOPERATING TO FORM A STREAMLINED CONTINUATION OF THE FUSELAGE IN THEIR CLOSED POSITIONS, AUXILIARLY RAMP MEANS OF SUBSTANTIALLY SMALLER WIDTH THAN THE RAMP AND STORED ON THE RAMP, SAID AUXILIARY RAMP MEANS FORMING AN EXTENSION OF THE RAMP WHEN BOTH THE RAMP AND THE AUXILIARY RAMP MEANS ARE IN THEIR LOADING AND UNLOADING POSITIONS, AND A HINGE PIVOTALLY CONNECTING SAID AUXILIARY RAMP MEANS TO SAID RAMP, SAID HINGE INCLUDING MEANS TO PERMIT LATERAL ADJUSTMENT OF SAID AUXILIARY RAMP MEANS WITH RESPECT TO SAID RAMP, SAID HINGE HAVING MEANS TO POSITION SAID AUXILIARY RAMP MEANS TO PROVIDE A SMOOTH CONTINUATION OF SAID RAMP TO THE GROUND WHEN THE RAMP AND THE AUXILIARY RAMP MEANS ARE IN THEIR LOADING AND UNLOADING POSITIONS.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |