Patent US3366938A successfully refreshed from Google Patents.
Patent US3305996A successfully refreshed from Google Patents.
US3305996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel fastener
Assignee: North American Aviation Corp
•
Filing: 1964-05-04
•
Granted: 1967-02-28
•
Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:10
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/01; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN COMBINATION WITH A FASTENER INSTALLATION FOR A PANEL HAVING A LOW-DENSITY HONEYCOMB CORE SECURED TO AND BETWEEN A PAIR OF SKIN SHEETS, AN APERTURE IN ONE OF THE SHEETS, AND AN ENLARGED RIGHT-CYLINDRICAL RECESS IN THE CORE, SAID ENLARGED RECESS HAVING A DIAMETER LARGER THAN THE DIAMETER OF SAID APERTURE, AND BEING BOUNDED BY RUPTURED CELLS, THE IMPROVEMENT COMPRISING: MEANS, COMPRISING A SUBSTANTIALLY RIGHT-CYLINDRICAL, BARRIER SLEEVE OF STRIP-LIKE RESILIENT MATERIAL POSITIONED IN, AND LINING THE ENLARGED CORE RECESS DEFINED BY SAID RUPTURED CELLS AND HAVING A WIDTH SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN MUTUALLY FACING SURFACES OF THE SKIN SHEETS, SAID RESILIENT SLEEVE BEING RADIALLY
Claim 2
Dependent Claim
106 words
IN COMBINATION WITH A FASTENER INSTALLATION FOR A PANEL HAVING A LOW-DENSITY HONEYCOMB CORE SECURED TO AND BETWEEN A PAIR OF SKIN SHEETS, AN APERTURE IN ONE OF THE SHEETS, AND AN ENLARGED RIGHT-CYLINDRICAL RECESS IN THE CORE, SAID ENLARGED RECESS HAVING A DIAMETER LARGER THAN THE DIAMETER OF SAID APERTURE, AND BEING BOUNDED BY RUPTURED CELLS, THE IMPROVEMENT COMPRISING: MEANS, COMPRISING A SUBSTANTIALLY RIGHT-CYLINDRICAL, BARRIER SLEEVE OF STRIP-LIKE RESILIENT MATERIAL POSITIONED IN, AND LINING THE ENLARGED CORE RECESS DEFINED BY SAID RUPTURED CELLS AND HAVING A WIDTH SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN MUTUALLY FACING SURFACES OF THE SKIN SHEETS, SAID RESILIENT SLEEVE BEING RADIALLY
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |