US3560132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for captive screw
Assignee: Deutsch Fastener Corp
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Filing: 1968-11-22
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Granted: 1971-02-02
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Expires: 1988-11-22
Abstract
Abstract A CAPTIVE SCREW ARRANGEMENT INCLUDING A SLEEVE THROUGH WHICH IS EXTENDED A SCREW BLANK, AFTER WHICH THE PORTION OF THE SHANK PROJECTING BEYOND THE SLEEVE IS PROVIDED WITH SCREWS THREADS OF A LARGER MAJOR DIAMETER THAN THE BORE OF SLEEVE. A SECOND BORE OF LARGER DIAMETER IS INCLUDED, RESULTING IN A THIN-WALLED PORTION ENABLING A FLANGE TO BE BENT OUTWARDLY FOR ATTACHING THE SLEEVE TO A WORKPIECE. THE INTERIOR OF THE SLEEVE BEYOND THE FIRST BORE MAY BE OF SUFFICIENT LENGTH TO ALLOW RETRACTION OF THE SCREW SHANK, AND A THIRD BORE ALSO MAY BE PROVIDED TO GIVE THE INTERMEDIATE PORTION OF THE SLEEVE A THICKNER WALL AND GREATER STRENGTH THAN THAT AT THE THIN-WALLED END.
Inventors
- 👤 Bulent Gulistan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:31
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/04; F16B41/00; F16B41/002; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/969; Y10S411/999; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49858; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |