US3653127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental crown elevation
Assignee: Individual
•
Filing: 1970-06-09
•
Granted: 1972-04-04
•
Expires: 1990-06-09
Abstract
Abstract Apparatus for removing tooth crowns (or caps or inlays) comprises a source of fluid pressure, including ducting; and, means to couple the ducting in pressure transmitting relation with the tooth side of the crown for effecting separation of the crown from the tooth in response to fluid pressure transmission to that side of the crown.
Inventors
- 👤 Louis M Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:43
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/16; A61C3/162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
The method of removing a tooth crown that includes, a. providing a source of fluid pressure, and b. communicating said fluid pressure to the tooth side of a crown bonded to a tooth and entrapping and building up said pressure to separate the crown from the tooth.
Claim 2
Independent Claim
47 words
The method of removing a tooth crown that includes, a. providing a source of fluid pressure, and b. communicating said fluid pressure to the tooth side of a crown bonded to a tooth and entrapping and building up said pressure to separate the crown from the tooth.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein said communicating step includes forming an opening throUgh the crown to pass said fluid.
Claim 4
Dependent Claim
27 words
The method of claim 2 wherein said forming step includes tapping a threaded opening in the crown to receive a threaded tubular fitting to pass said fluid.
References Cited (Backward Citations)
US3135144A
Cited
US3521356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |