US3268205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed dental turbines
Assignee: MICRO TURBINES Ltd
•
Filing: 1964-03-09
•
Granted: 1966-08-23
•
Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Allen Higel Stafford David
- 👤 Henocq Ronald George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0662; F16C32/067; A; A61; A61C; A61C1/00; A61C1/02; A61C1/05; A61C1/08; A61C1/18; A61C1/181; F01; F01D; F01D15/00; F01D15/06; F01D15/067; F01D25/00; F01D25/18; F01D25/22; F16C2316/00; F16C2316/10; F16C2316/13; Y; Y10; Y10S; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A HIGH SPEED AIR TURBINE AND BEARINGS THEREFOR COMPRISING: A HOUSING HAVING AN ANNULAR AIR DRIVING CHAMBER THEREIN AND A PERIPHERALLY BLADDED ROTOR MOUNTED ECCENTRICALLY IN SAID CHAMBER; MEANS IN SAID HOUSING TO SUPPLY COMPRESSED AIR TO SAID TUBULAR AND BEARINGS; SAID BLADED ROTOR HAVING OPPOSED END WALLS SUBSTANTIALLY NORMAL TO THE AXIS OF SAID ROTOR; A CYLINDRICAL JOURNAL EXTENDING FROM EACH END WALL; A SUPPORT STRUCTURE FOR EACH OF SAID JOURNALS, EACH SUPPORT STRUCTURE COMPRISING A BEARING HAVING AN AXIALLY EXTENDING ANNULAR SUPPORT SURFACE OPPOSITE TO ONE OF SAID CYLINDRICAL JOURNAL AND A RADIAL SUPPORT SURFACE OPPOSITE ONE OF SAID END WALLS OF SAID ROTOR; A PLURALITY OF APERTURES IN SAID ANNULAR SUPPORT SURFACES AND SAID RADIAL SUPPORT SURFACES WHEREBY COMPRESSED AIR IS SUPPLIED THERETO TO SUPPORT SAID ROTOR AGAINST BOTH RADIAL AND AXIAL MOVEMENT; AND AN ANNULAR RING OF RUBBER-LIKE MATERIAL ABOUT EACH SUPPORT STRUCTURE, HAVING A SHORE HARDNESS OF ABOUT 45*, SEPARTING THE SUPPORT STRUCTURES COMPLETELY FROM SAID HOUSING FOR DAMPING UNBALANCED FORCES ARISING FROM TEH WHIRL OF THE ROTOR.
Claim 2
Dependent Claim
173 words
A HIGH SPEED AIR TURBINE AND BEARINGS THEREFOR COMPRISING: A HOUSING HAVING AN ANNULAR AIR DRIVING CHAMBER THEREIN AND A PERIPHERALLY BLADDED ROTOR MOUNTED ECCENTRICALLY IN SAID CHAMBER; MEANS IN SAID HOUSING TO SUPPLY COMPRESSED AIR TO SAID TUBULAR AND BEARINGS; SAID BLADED ROTOR HAVING OPPOSED END WALLS SUBSTANTIALLY NORMAL TO THE AXIS OF SAID ROTOR; A CYLINDRICAL JOURNAL EXTENDING FROM EACH END WALL; A SUPPORT STRUCTURE FOR EACH OF SAID JOURNALS, EACH SUPPORT STRUCTURE COMPRISING A BEARING HAVING AN AXIALLY EXTENDING ANNULAR SUPPORT SURFACE OPPOSITE TO ONE OF SAID CYLINDRICAL JOURNAL AND A RADIAL SUPPORT SURFACE OPPOSITE ONE OF SAID END WALLS OF SAID ROTOR; A PLURALITY OF APERTURES IN SAID ANNULAR SUPPORT SURFACES AND SAID RADIAL SUPPORT SURFACES WHEREBY COMPRESSED AIR IS SUPPLIED THERETO TO SUPPORT SAID ROTOR AGAINST BOTH RADIAL AND AXIAL MOVEMENT; AND AN ANNULAR RING OF RUBBER-LIKE MATERIAL ABOUT EACH SUPPORT STRUCTURE, HAVING A SHORE HARDNESS OF ABOUT 45*, SEPARTING THE SUPPORT STRUCTURES COMPLETELY FROM SAID HOUSING FOR DAMPING UNBALANCED FORCES ARISING FROM TEH WHIRL OF THE ROTOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |