US3197869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-lubricating and self-cleaning dental handpieces
Assignee: American Hospital Supply Corp
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Filing: 1957-01-08
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Granted: 1965-08-03
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Expires: 1977-01-08
Abstract
No abstract record available.
Inventors
- 👤 Staunt Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:45
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/08; A61C1/18; A61C1/181; A61C19/00; A61C19/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
IN A SELF-LUBRICATING AND SELF-CLEANING HANDPIECE, THE COMBINATION OF A DENTAL HANDPIECE PROVIDED WITH AN OUTER SHEATH AND AN INNER SPINDLE, SAID SPINDLE HAVING A CHUCK AND BALL BEARINGS FOR SUPPORTING SAID SPINDLE IN SAID SHEATH, A CONTRA ANGLE HAVING A DRIVE SHAFT GRIPPED BY SAID CHUCK AND DRIVEN BY SAID SPINDLE, SAID CONTRA ANGLE INCLUDING A HOUSING AND A TRANSVERSE TOOL SHAFT, BALL BEARINGS IN SAID CONTRA ANGLE HOUSING FOR ROTATABLY SUPPORTING SAID TOOL SHAFT, A COMBINED AIR AND COIL CONDUIT EXTENDING INTO SAID CONTRA ANGLE HOUSING REARWARDLY OF SAID BALL BEARINGS AND A SOURCE OF AIR AND OIL UNDER PRESSURE FOR SUPPLYING AIR AND OIL TO THE INTERIOR OF SAID CONTRA ANGLE HOUSING FOR LUBRICATING THE BALL BEARINGS AND CONSTANTLY CLEANING THE BALL BEARINGS BY EXCLUDING FOREIGN MATERIAL AND PERMITTING THE AIR AND OIL TO ESCAPE FROM THE TOOL END OF THE BALL BEARING, SAID SOURCE INCLUDING A LUBRICANT RESERVOIR AND AIR CONDUITS INCLUDING A NOZZLE FOR THE AIR AND A CONDUIT FOR PLACING PRESSURE ON THE LUBRICANT TO BE DRIVEN INTO THE AIR STREAM.
Claim 2
Dependent Claim
177 words
IN A SELF-LUBRICATING AND SELF-CLEANING HANDPIECE, THE COMBINATION OF A DENTAL HANDPIECE PROVIDED WITH AN OUTER SHEATH AND AN INNER SPINDLE, SAID SPINDLE HAVING A CHUCK AND BALL BEARINGS FOR SUPPORTING SAID SPINDLE IN SAID SHEATH, A CONTRA ANGLE HAVING A DRIVE SHAFT GRIPPED BY SAID CHUCK AND DRIVEN BY SAID SPINDLE, SAID CONTRA ANGLE INCLUDING A HOUSING AND A TRANSVERSE TOOL SHAFT, BALL BEARINGS IN SAID CONTRA ANGLE HOUSING FOR ROTATABLY SUPPORTING SAID TOOL SHAFT, A COMBINED AIR AND COIL CONDUIT EXTENDING INTO SAID CONTRA ANGLE HOUSING REARWARDLY OF SAID BALL BEARINGS AND A SOURCE OF AIR AND OIL UNDER PRESSURE FOR SUPPLYING AIR AND OIL TO THE INTERIOR OF SAID CONTRA ANGLE HOUSING FOR LUBRICATING THE BALL BEARINGS AND CONSTANTLY CLEANING THE BALL BEARINGS BY EXCLUDING FOREIGN MATERIAL AND PERMITTING THE AIR AND OIL TO ESCAPE FROM THE TOOL END OF THE BALL BEARING, SAID SOURCE INCLUDING A LUBRICANT RESERVOIR AND AIR CONDUITS INCLUDING A NOZZLE FOR THE AIR AND A CONDUIT FOR PLACING PRESSURE ON THE LUBRICANT TO BE DRIVEN INTO THE AIR STREAM.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |