Patent US3555685A successfully refreshed from Google Patents.
US3555685A
Expired / Lapsed
US
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Dental angle handpiece for root canal treatment
Assignee: Kaltenbach and Voigt GmbH
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Filing: 1968-11-06
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Granted: 1971-01-19
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Expires: 1988-11-06
Abstract
Abstract DENTAL APPARATUS INCLUDES A HEAD PART AND COMPRISES DRIVE MECHANISM FOR IMPARTING OSCILLATING MOVEMENT TO A CANAL INSTRUMENT OR TOOL. THE DRIVE MECHANISM INCLUDES A WOBBLE PLATE ROTATABLE BY THE DRIVE SHAFT OF AN ANGLE HANDPIECE AND IS ADAPTED TO IMPART AXIAL DISPLACEMENT ALTERNATELY TO TWO PUSH RODS, THE LATTER ENGAGING TRANSVERSE SURFACES OF A DRIVE SLEEVE IN SUCH A MANNER THAT THE CONTINUOUS ROTARY MOTION OF THE DRIVE SHAFT IS CONVERTED TO IMPART OSCILLATING MOVEMENT TO THE DRIVE SLEEVE.
Inventors
- 👤 Hans Loge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:07
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |