Orthodontic appliance
Abstract
Abstract AN ORTHODONTIC APPLIANCE FOR MAINTAINING AN ARCH WIRE PROPERLY POSITIONED WITH RESPECT TO A TOOTH. THE APPLIANCE INCLUDES A SYMMETRICALLY CONSTRUCTED GUIDANCE PIN HAVING AN OVAL HEAD AND AN ELONGATED TAIL EXTENDING PERPENDICULARLY WITH RESPECT TO THE MAJOR AXIS OF THE OVAL HEAD. THIS PIN IS RECEIVED IN A BRACKET, WITH THE TAIL EXTENDING BETWEEN SIDE WALLS OF THE BRACKET. THE SIDE WALLS EXTEND SUBSTANTIALLY VERTICALLY AND TERMINATE IN UPPER SURFACES RESPECTIVELY FORMED WITH RECESSES EXTENDING AROUND THE MAJOR AXIS OF THE OVAL HEAD AN RECEIVING THE LATTER TO FORM A SEAT THEREFOR. THE BRACKET SIDE WALLS ARE FORMED AT INNER EDGES WITH UPWARDLY DIRECTED SHOULDERS WHICH WITH THE OVAL HEAD AND THE OUTER SURFACE OF A BAND WHICH CARRIES THE BRACKET DEFINE AN ENCLOSURE THROUGH WHICH THE ARCH WIRE EXTENDS. WHEN THE PIN IS INITIALLY PLACED IN THE BRACKET THE TAIL EXTENDS SUBSTANTIALLY PARALLEL TO AN AXIS OF A CYLINDER OF WHICH THE BAND FORMS A PART, WITH THIS TAIL BEING SITUATED FORWARDLY OF THE BAND WITHOUT BEING INCLINED TOWARD THE LATTER.
Inventors
- 👤 Ernest Schwartz
Bibliographic Details
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |