US4248587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic tool
Assignee: Ormco Corp
•
Filing: 1979-10-22
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Granted: 1981-02-03
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Expires: 1999-10-22
Abstract
Abstract A tool in the form of specially constructed plyers for removing orthodontic brackets and tubes which have been adhesively bonded to the labial, buccal or lingual surfaces of the anterior and/or posterior teeth for orthodontic treatment. The tool is equipped with a spring-loaded catch having a tip which fits under the edge of the bracket, and with a head which engages the top of the tooth, so that when the handles of the tool are squeezed together the bonded bracket is removed from the surface of the tooth without any tendency to torque the tooth during the process.
Inventors
- 👤 Craven H. Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:28
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/02; A61C7/04; A61C7/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A tool for removing an adhesively bonded orthodontic bracket from the surface of a tooth, which comprises: first and second sections pivotally coupled to one another to define first and second handles and first and second jaws for the tool; a head portion formed on one of the jaws in position to engage the top of the tooth; an elongated depending portion positioned on the other of the jaws; and a spring-loaded catch member pivotally coupled to the distal end of said depending portion in position to be spring biased against the bracket with the end of the catch member extending under the edge of the bracket.
Claim 2
Dependent Claim
107 words
A tool for removing an adhesively bonded orthodontic bracket from the surface of a tooth, which comprises: first and second sections pivotally coupled to one another to define first and second handles and first and second jaws for the tool; a head portion formed on one of the jaws in position to engage the top of the tooth; an elongated depending portion positioned on the other of the jaws; and a spring-loaded catch member pivotally coupled to the distal end of said depending portion in position to be spring biased against the bracket with the end of the catch member extending under the edge of the bracket.
Claim 3
Dependent Claim
28 words
The tool defined in claim 1, in which the head portion is canted to permit the bracket to be removed by the tool without excessively torquing the tooth.
Claim 4
Dependent Claim
63 words
The tool defined in claim 1, in which the head portion is formed on the lower jaw, and the elongated depending portion is formed on the upper jaw in overhanging relationship with the lower jaw so as to permit the catch member to extend down behind the tooth for the removal of a bracket adhesively bonded to the lingual side of the tooth.
Claim 5
Dependent Claim
65 words
The tool defined in claim 1, in which the head portion is formed on the upper jaw, and the elongated depending portion is formed on the lower jaw and extends away from the head portion to permit the catch member to extend down in front of the tooth for the removal of a bracket adhesively bonded to the labial or buccal side of the tooth.
Claim 6
Dependent Claim
44 words
The tool defined in claim 1, in which said head portion and said elongated depending portion are displaced from the longitudinal axis of the tool in a transverse direction to permit the tool to be used to remove the bracket from a posterior tooth.
References Cited (Backward Citations)
US681224A
Cited
US1109096A
Cited
US1631916A
Cited
DE581005C
Cited
GB427695A
Cited
US3208319A
Cited
US3986265A
Cited
US4197647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |