US4030198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth enamel-stripping apparatus
Assignee: Individual
•
Filing: 1974-09-30
•
Granted: 1977-06-21
•
Expires: 1994-09-30
Abstract
Abstract A hand-held, tooth enamel-stripping apparatus having a handle portion, and a guiding portion extending from the handle portion to a free end. One end of an abrasive metal band is secured to a U-shaped member connected to the free end of the guiding portion, and the other end of the band is tensionably secured to a locking mechanism, spaced from the U-shaped member, and connected to the handle portion. The band is mounted to the apparatus adjacent the guiding portion so that when the band is inserted between adjacent teeth, the guiding portion rests adjacent a tooth crown for guiding the apparatus during its reciprocal, tooth-stripping movement.
Inventors
- 👤 Warren E. Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:18
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
an orthodontic apparatus, for use with an abrasive band having a first end and a second end, to strip enamel from a tooth have a crown, said apparatus comprising: a frame including a guiding portion; means on said guiding portion for releasably securing said first end of said abrasive band; lever means including a base portion; biasing means on said frame spaced from said guiding portion for engagement with said lever means; and, means mounting said lever means adjacent said biasing means for movement of said lever means between: a. a first position wherein said base portion is not in contact with said biasing means to permit said second band end to be inserted between said base portion and said biasing means; b. a second position wherein said base portion is in contact with said second band end and said biasing means for tensioning said abrasive band; and, c. a third position wherein said base portion is in contact with said second band end and said biasing means for locking said abrasive band.--
Claim 2
Dependent Claim
173 words
an orthodontic apparatus, for use with an abrasive band having a first end and a second end, to strip enamel from a tooth have a crown, said apparatus comprising: a frame including a guiding portion; means on said guiding portion for releasably securing said first end of said abrasive band; lever means including a base portion; biasing means on said frame spaced from said guiding portion for engagement with said lever means; and, means mounting said lever means adjacent said biasing means for movement of said lever means between: a. a first position wherein said base portion is not in contact with said biasing means to permit said second band end to be inserted between said base portion and said biasing means; b. a second position wherein said base portion is in contact with said second band end and said biasing means for tensioning said abrasive band; and, c. a third position wherein said base portion is in contact with said second band end and said biasing means for locking said abrasive band.--
Claim 3
Dependent Claim
44 words
An apparatus as set forth in claim 1 wherein said biasing means comprises: a leaf spring including a free end; and, means mounting said leaf spring to said frame for movement of said free end in response to the movement of said lever means.--
References Cited (Backward Citations)
US1050469A
Cited
US1201875A
Cited
FR644176A
Cited
US1913598A
Cited
US1970575A
Cited
US2176069A
Cited
US2207953A
Cited
US2337388A
Cited
US2500867A
Cited
US2664093A
Cited
US2648341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |