Patent US4087915A successfully refreshed from Google Patents.
US4087915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic safety face bow
Assignee: Individual
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Filing: 1975-07-07
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Granted: 1978-05-09
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Expires: 1995-07-07
Abstract
Abstract A safety face bow having inner and outer wires, the outer wires adapted for coupling to a head cap and/or a neck pad and the inner wires adapted for terminating in an orthodontic buccal tube in which a blunt extension beyond the end of the inner wire is added for the prevention of impalement by the ends of the inner wire if the face bow assembly is pulled out of the patient's mouth. In one embodiment, the outer wire is also removably attached to the inner wire with the additional blunt edge forming a latch for retention of the inner wire should the outer wire be pulled while being worn within the patient's mouth.
Inventors
- 👤 Lawrence F. Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:45
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
169 words
In an orthodontic safety face bow composed of: an inner wire and an outer wire, said inner wire and outer wire being coupled together at central portions thereof, said outer wire having first and second ends adapted for coupling to a head cap and/or a neck pad, said inner wire having first and second ends adapted for being received by buccal tubes; the improvement comprising first and second safety extensions being coupled at one end to said inner wire and extending freely beyond said inner wire's first and second ends, respectively, terminating in looped portions through a location which intersects an extension of the axis of respective of said first and second ends so that when said inner ends said safety extensions each including a detent portion at said locations for engaging with said buccal tubes are positioned to extend through one end of said buccal tubes, said safety extensions will engage the other end of respective of said buccal tubes and prevent displacement of said inner wire therefrom.
Claim 2
Dependent Claim
169 words
In an orthodontic safety face bow composed of: an inner wire and an outer wire, said inner wire and outer wire being coupled together at central portions thereof, said outer wire having first and second ends adapted for coupling to a head cap and/or a neck pad, said inner wire having first and second ends adapted for being received by buccal tubes; the improvement comprising first and second safety extensions being coupled at one end to said inner wire and extending freely beyond said inner wire's first and second ends, respectively, terminating in looped portions through a location which intersects an extension of the axis of respective of said first and second ends so that when said inner ends said safety extensions each including a detent portion at said locations for engaging with said buccal tubes are positioned to extend through one end of said buccal tubes, said safety extensions will engage the other end of respective of said buccal tubes and prevent displacement of said inner wire therefrom.
Claim 3
Dependent Claim
19 words
The orthodontic safety face bow of claim 1 wherein: said inner wire and outer wire are removably coupled together.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |