US5167499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ni-ti orthodontic palatal expansion arch
Assignee: Victor Company of Japan Ltd
•
Filing: 1991-02-27
•
Granted: 1992-12-01
•
Expires: 2011-02-27
Abstract
Abstract A removable orthodontic palatal expansion arch having a generally "M"-shaped configuration, the arch having a center segment composed of a near-stoichiometric alloy of nickel and titanium which possesses memory-retaining characteristics to simultaneously expand the bicuspids and expand, rotate, intrude and/or torque the maxillary molars, and end segments composed of an alloy of stainless steel or another biocompatible material configured for securing the archwire to lingual sheaths attached to molar bands.
Inventors
- 👤 Wendell V. Arndt
- 👤 Carl J. Berendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:39
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/10; A61C2201/00; A61C2201/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A method for adjusting the forces imparted on a patient's palatal arch by a temperature-affected archwire comprising: removing the archwire from the patient's mouth heating the archwire at 1200° Fahrenheit while under 6% strain, deforming the archwire in its martensitic state to the specific configuration of the patient's pre-treated arch, and re-inserting the archwire into the patient's mouth.
Claim 2
Independent Claim
58 words
A method for adjusting the forces imparted on a patient's palatal arch by a temperature-affected archwire comprising: removing the archwire from the patient's mouth heating the archwire at 1200° Fahrenheit while under 6% strain, deforming the archwire in its martensitic state to the specific configuration of the patient's pre-treated arch, and re-inserting the archwire into the patient's mouth.
Claim 3
Independent Claim
121 words
A method for treatment of a malaligned palatal arch using an archwire composed of a temperature-affected material having a transition temperature below mouth temperature which comprises: step one: deforming the archwire in its austenitic phase to the specific configuration of a desired post-treatment palatal arch, step two: deforming the archwire in its martensitic state to the specific configuration of a patient's pre-treated malaligned palatal arch, step three: inserting the archwire into the patient's mouth and attaching the ends of the archwire into lingually projecting sheaths, readjusting the forces imparted on the palate by removing the archwire from the patient's mouth, adjusting the archwire spread dimensions and heating the archwire at 1200° Fahrenheit while under 6% strain, repeating steps two and three.
Claim 4
Independent Claim
121 words
A method for treatment of a malaligned palatal arch using an archwire composed of a temperature-affected material having a transition temperature below mouth temperature which comprises: step one: deforming the archwire in its austenitic phase to the specific configuration of a desired post-treatment palatal arch, step two: deforming the archwire in its martensitic state to the specific configuration of a patient's pre-treated malaligned palatal arch, step three: inserting the archwire into the patient's mouth and attaching the ends of the archwire into lingually projecting sheaths, readjusting the forces imparted on the palate by removing the archwire from the patient's mouth, adjusting the archwire spread dimensions and heating the archwire at 1200° Fahrenheit while under 6% strain, repeating steps two and three.
References Cited (Backward Citations)
US1395922A
Cited
US1471785A
Cited
US1582570A
Cited
US4412819A
Cited
US4479779A
Cited
US4571179A
Cited
US4592725A
Cited
US4976614A
Cited
US4818226A
Cited
US4815968A
Cited
US4900251A
Cited
US5046948A
Cited
US5017133A
Cited
US5018969A
Cited
US5080584A
Cited
US5044947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |