Patent US1198643A successfully refreshed from Google Patents.
US3071861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental instruments
Assignee: Dentists Supply Company of New York
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Filing: 1960-05-27
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Granted: 1963-01-08
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 Jacob A Saffir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/18; A61C1/181; F; F16; F16C; F16C17/00; F16C17/04; F16C17/08; F16C19/00; F16C19/02; F16C19/14; F16C19/16; F16C19/163; F16C19/50; F16C19/507; F16C21/00; A61C1/183; F16C2316/00; F16C2316/10; F16C2316/13; Y; Y10; Y10S; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN AN AIR TURBINE DENTAL HANDPIECE OR THE LIKE, A TURBINE CASING, A TURBINE ROTOR HAVING A HOLLOW SHAFT EXTENDING AXIALLY FROM ONE END OF SAID ROTOR, A STUB SHAFT EXTENDING AXIALLY FROM THE OTHER END OF SAID ROTOR, A HARDENED POINTED BEARING END ON SAID STUB SHAFT, A CUP SHAPED JEWEL BEARING MOUNTED IN ONE END OF SAID CASING TO RECEIVE SAID POINTED BEARING END OF SAID STUB SHAFT, AND ANTI-FRICTION BEARING MEANS COMPRISING A PLURALITY OF ROLLERS SUPPORTED BY TRUNNIONS EACH PIVOTALLY MOUNTED IN FIXED JEWELED BEARINGS SURROUNDING THE AXIALLY EXTENDING HOLLOW SHAFT.
Claim 2
Dependent Claim
95 words
IN AN AIR TURBINE DENTAL HANDPIECE OR THE LIKE, A TURBINE CASING, A TURBINE ROTOR HAVING A HOLLOW SHAFT EXTENDING AXIALLY FROM ONE END OF SAID ROTOR, A STUB SHAFT EXTENDING AXIALLY FROM THE OTHER END OF SAID ROTOR, A HARDENED POINTED BEARING END ON SAID STUB SHAFT, A CUP SHAPED JEWEL BEARING MOUNTED IN ONE END OF SAID CASING TO RECEIVE SAID POINTED BEARING END OF SAID STUB SHAFT, AND ANTI-FRICTION BEARING MEANS COMPRISING A PLURALITY OF ROLLERS SUPPORTED BY TRUNNIONS EACH PIVOTALLY MOUNTED IN FIXED JEWELED BEARINGS SURROUNDING THE AXIALLY EXTENDING HOLLOW SHAFT.
References Cited (Backward Citations)
US2891312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |