US3552777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking device for couplings
Assignee: United Airlines Inc
•
Filing: 1968-02-23
•
Granted: 1971-01-05
•
Expires: 1988-02-23
Abstract
Abstract A SELF-LOCKING THREADED ELECTRICAL CONNECTOR IS DISCLOSED. ONE OF TWO MATING SECTIONS OF THE CONNECTOR HAS A PLURALITY OF INDENTATIONS OR HOLES WHICH MOVE OVER A PLURALITY OF BALLS AS THE TWO MATING SECTIONS ARE THREADED TOGETHER. AS THE CONNECTOR IS TIGHTENED IT BECOMES MORE DIFFICULT TO MOVE THE INDENTATIONS PAST THE BALLS AND EVENTUALLY A LOCKED CONDITION IS ESTABLISHED. A TACTILE AND VISUAL INDICATION OF THE PROPERLY MATED CONDITION IS PROVIDED.
Inventors
- 👤 Lawrence O Heinrich
- 👤 Joseph E Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
F; F16; F16L; F16L19/00; H; H01; H01R; H01R13/00; H01R13/62; H01R13/622; H01R13/46; H01R13/465
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |