Patent US2789842A successfully refreshed from Google Patents.
US3091033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cleaning tool, apparatus, and method
Assignee: Individual
•
Filing: 1961-06-02
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Granted: 1963-05-28
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Expires: 1981-06-02
Abstract
No abstract record available.
Inventors
- 👤 Irving A Ellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:52
CPC Classifications
A; A61; A61C; A61C17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A DENTAL CLEANING TOOL COMPRISING A STRAIGHT TOOL BIT HAVING A SHANK PORTION AT ONE END AND A CLEANING PORTION AT THE OTHER END BOTH HAVING A COMMON CENTRAL AXIS, SAID CLEANING PORITION COMPRISING AN ELONGATED BODY AYMMETRICAL ABOUT SAID CENTRAL AXIS AND TAPERING SUBSTANTIALLY TO A POINT AT ITS END REMOTE FROM THE SHANK PORTION, SAID CLEANING PORTION BEING CONSTITUTED OF BETWEEN FOUR AND EIGHT ELONGATED SMOOTH SIDE PORTIONS SYMMETRICALLY DISPOSED ABOUT SAID CENTRAL AXIS AND FORMING AT THEIR JUNCTIONS OBTUSE-ANGLED CORNERS, WHEREBY WHEN SAID TOOL BIT IS ROTATED ABOUT ITS AXIS AT VERY HIGH SPEEDS AND BROUGHT INTO CONTACT WITH HARD TOOTH DEPOSITS, ULTRASONIC VIBRATIONS ARE IMPARTED THERETO LEADING TO THEIR RAPID DISINTEGRATION AND REMOVAL WITHOUT INJURY TO THE TOOTH OF SURROUNDING SOFT TISSUE.
Claim 2
Dependent Claim
126 words
A DENTAL CLEANING TOOL COMPRISING A STRAIGHT TOOL BIT HAVING A SHANK PORTION AT ONE END AND A CLEANING PORTION AT THE OTHER END BOTH HAVING A COMMON CENTRAL AXIS, SAID CLEANING PORITION COMPRISING AN ELONGATED BODY AYMMETRICAL ABOUT SAID CENTRAL AXIS AND TAPERING SUBSTANTIALLY TO A POINT AT ITS END REMOTE FROM THE SHANK PORTION, SAID CLEANING PORTION BEING CONSTITUTED OF BETWEEN FOUR AND EIGHT ELONGATED SMOOTH SIDE PORTIONS SYMMETRICALLY DISPOSED ABOUT SAID CENTRAL AXIS AND FORMING AT THEIR JUNCTIONS OBTUSE-ANGLED CORNERS, WHEREBY WHEN SAID TOOL BIT IS ROTATED ABOUT ITS AXIS AT VERY HIGH SPEEDS AND BROUGHT INTO CONTACT WITH HARD TOOTH DEPOSITS, ULTRASONIC VIBRATIONS ARE IMPARTED THERETO LEADING TO THEIR RAPID DISINTEGRATION AND REMOVAL WITHOUT INJURY TO THE TOOTH OF SURROUNDING SOFT TISSUE.
References Cited (Backward Citations)
US436891A
Cited
US1780117A
Cited
US2651148A
Cited
US2874470A
Cited
US2901826A
Cited
US2866267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |