US3605547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligning screw anchor
Assignee: Individual
•
Filing: 1969-04-10
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Granted: 1971-09-20
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Expires: 1989-04-10
Abstract
Abstract A SCREW ANCHOR, TO BE ENGAGED BY A BOLT TRAVERSING A WALL, COMPRISES A RIGID BAR ALONGSIDE WHICH A LANYARD IS ENTRAINED THROUGH A HOLE PREFORMED IN THE WALL OR PIERCED IN IT BY AN ENLARGED, POINTED HEAD OF THE BAR, THE LANYARD IS ATTACHED TO THE BAR IN THE VICINITY OF A THREADED TRANSVERSE BORE THEREOF WHICH ALIGNS ITSELF WITH THE PIERCED HOLE WHEN THE BAR IS PULLED FLAT AGAINST THE REMOTE WALL SURFACE AFTER ITS TRAILING END OR FOOT HAS CLEARED THE HOLE, MEANS BEING PROVIDED FOR SWINGING THE BAR OUT OF ALIGNMENT WITH THE LANYARD IN ORDER TO PREVENT ITS FOOT FROM BLOCKING THE PULLBACK.
Inventors
- 👤 David I Millet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; F16B13/0808; F16B37/00; F16B37/04; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/969; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49838
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |