Patent US3587271A successfully refreshed from Google Patents.
US3587271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operable tool for installing blind anchor nuts
Assignee: Aerpat AG
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Filing: 1969-03-19
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Granted: 1971-06-28
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Expires: 1989-03-19
Abstract
Abstract A MANUALLY OPERABLE TOOL FOR INSTALLING BLIND ANCHOR NUTS HAS A THREADED MANDREL WHICH CAN BE ROTATED BY A SHAFT HAVING AT ONE END A KEY ENGAGING A SOCKET ON THE MANDREL AND AT THE OTHER END A PROJECTING HANDLE. THE SHAFT IS BOTH ROTATABLE AND RECIPROCABLE, SO THAT THE KEY CAN BE DISENGAGED FROM THE MANDREL TO ALL ROTATION OF THE MANDREL IN SUCCESSIVE STEPS BY REPEATED ROTATION OF THE HANDLE THROUGH A SMALL ANGLE. THE MANDREL, THE KEY, AND AN ANVIL SURROUNDING THE MANDREL, MAY BE REMOVABLE AND INTERCHANGEABLE.
Inventors
- 👤 Robert M Rigot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:15
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/0007; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53987
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |