Doors
Abstract
Abstract A DOOR ASSEMBLY HAVING, A DOOR FRAME AND A DOOR HINGED TO ONE EDGE OF THE FRAME. THE DOOR COMPRISES TWO PARTS HINGED TOGETHER FOR LIMITED RELATIVE ROTATION, AND AN ACTUATOR EFFECTIVE WITH THE DOOR IN THE CLOSED POSITION OPERATIVELY CONNECTING THE TWO PARTS SO AS TO VARY THE EFFECTIVE DEPTH OF THE DOOR. THE EDGE OF THE DOOR REMOTE FROM THE MAIN HINGE AND THE CORRESPONDING EDGE OF THE DOOR FRAME BEING PROVIDED WITH ENGAGABLE HOOK MEANS. THE RELATIVE POSITIONS OF THE HOOK MEANS BEING SUCH THAT WHEN THE TWO PARTS OF THE DOOR ARE SET FOR MAXIMUM DEPTH THE HOOK MEANS ARE DISENGAGED FROM EACH OTHER, WHILST WHEN THE TWO PARTS OF THE DOOR ARE SET TO A LESSER DEPTH THE HOOK MEANS ENGAGE EACH OTHER TO POSITIVELY LOCK THE DOOR IN A CLOSED POSITION.
Inventors
- 👤 R Godwin
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |