US3384142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich panel insert, rotatable snap-in type
Assignee: Individual
•
Filing: 1965-04-05
•
Granted: 1968-05-21
•
Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Charles S Phelan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/01; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49863; Y10T29/49876; Y10T29/49879; Y10T29/49888; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN INSERT FASTENER FOR INSTALLATION IN A LIGHTWEIGHT SANDWICH PANEL EMBODYING SPACED SKINS ATTACHED TO OPPOSITE SIDES OF A LOW-DENSITY CORE, HAVING A HOLE EXTENDING THROUGH ONE OF SAID SKINS AND THROUGH SAID CORE, SAID HOLE BEGINNING WITH AN OPENING IN SAID ONE SKIN SHEET, SAID FASTENER COMPRISING, IN COMBINATION: A TUBULAR BODY AND AN INTEGRAL, RADIALLY ENLARGED HEAD AT ONE END THEREOF, SAID INSERT HAVING A FASTENER ELEMENT RECEIVING BORE EXTENDING THROUGH SAID HEAD AND INTO SAID BODY; SAID HEAD HAVING A PLURALITY OF HELICAL FLUTES COLLECTIVELY DEFINING A FRUSTO-CONICAL PERIPHERY OPERABLE AS A SCREW-FEED EXPANDER CONE FOR FORCIBLE PASSAGE THROUGH SAID OPENING, SAID CONE HAVING A SMALLER END OF LESS DIAMETER THAN SAID OPENING, FOR FREE ENTRY THEREIN, THE ENDS OF SAID FLUTES AT SAID LARGER END COLLECTIVELY DEFINING AN ANNULAR SHOULDER HAVING AN OUTER DIAMETER GREATER THAN THE DIAMETER OF SAID OPENING, FOR ENGAGEMENT AGAINST THE INNER SIDE OF
Claim 2
Dependent Claim
152 words
AN INSERT FASTENER FOR INSTALLATION IN A LIGHTWEIGHT SANDWICH PANEL EMBODYING SPACED SKINS ATTACHED TO OPPOSITE SIDES OF A LOW-DENSITY CORE, HAVING A HOLE EXTENDING THROUGH ONE OF SAID SKINS AND THROUGH SAID CORE, SAID HOLE BEGINNING WITH AN OPENING IN SAID ONE SKIN SHEET, SAID FASTENER COMPRISING, IN COMBINATION: A TUBULAR BODY AND AN INTEGRAL, RADIALLY ENLARGED HEAD AT ONE END THEREOF, SAID INSERT HAVING A FASTENER ELEMENT RECEIVING BORE EXTENDING THROUGH SAID HEAD AND INTO SAID BODY; SAID HEAD HAVING A PLURALITY OF HELICAL FLUTES COLLECTIVELY DEFINING A FRUSTO-CONICAL PERIPHERY OPERABLE AS A SCREW-FEED EXPANDER CONE FOR FORCIBLE PASSAGE THROUGH SAID OPENING, SAID CONE HAVING A SMALLER END OF LESS DIAMETER THAN SAID OPENING, FOR FREE ENTRY THEREIN, THE ENDS OF SAID FLUTES AT SAID LARGER END COLLECTIVELY DEFINING AN ANNULAR SHOULDER HAVING AN OUTER DIAMETER GREATER THAN THE DIAMETER OF SAID OPENING, FOR ENGAGEMENT AGAINST THE INNER SIDE OF
References Cited (Backward Citations)
CA500583A
Cited
US2136523A
Cited
FR1091566A
Cited
US3042156A
Cited
GB812540A
Cited
US3016578A
Cited
US3197854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |