US3418715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental handpiece drive mechanism and dental tool holder
Assignee: Sybron Transition Corp
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Filing: 1957-09-03
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Granted: 1968-12-31
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Expires: 1977-09-03
Abstract
No abstract record available.
Inventors
- 👤 Charles A Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:25
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; A61C1/141; A61C1/02; A61C1/05
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
A DENTAL HANDPIECE COMPRISING, IN COMBINATION, AN ELONGATED CASING ADAPTED TO FIT IN THE HAND OF THE USER, A HEAD AT ONE END OF SAID CASING HAVING A BORE THE AXIS OF WHICH EXTENDS AT AN ANGLE TO THE LONG DIRECTION OF THE HANDLE, A UNITARY CAPSULE COMPRISING A CYLINDRICAL SHELL, A FLUID DRIVEN TURBINE AND BEARINGS THEREFOR MOUNTED IN SAID SHELL, SAID SHELL BEING ADAPTED TO FIT WITHIN AND BE HELD IN SAID BORE AND MEANS COMMUNICATING BETWEEN SAID CASING AND THE TURBINE AND EXTENDING THROUGH THE SHELL WALL FOR SUPPLYING FLUID UNDER PRESSURE TO THE TURBINE FROM SAID CASING, WHEREBY SAID UNITARY CAPSULE CAN BE EASILY REMOVED AND A LIKE REPLACED IN SAID BORE.
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |