US3101168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerodynamic wave machine formed rotor blades to minimize thermal stress
Assignee: ITE Circuit Breaker Co
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Filing: 1961-06-15
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Granted: 1963-08-20
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Expires: 1981-06-15
Abstract
No abstract record available.
Inventors
- 👤 Berchtold Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:17
CPC Classifications
F; F04; F04F; F04F13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A ROTOR FOR A WAVE MACHINE COMPRISING A CIRCULAR SHAFT, A CYLINDRICAL SHROUD SURROUNDING SAID SHAFT, A PLURALITY OF BLADES EACH POSITIONED SUBSTANTIALLY IN A RADIAL DIRECTION BETWEEN SAID SHAFT AND SAID SHROUD, OPPOSITE AXIAL EDGES OF EACH OF SAID BLADES BEING SECURED TO THE OUTER SURFACE AND THE INNER SURFACE OF SAID SHAFT AND SAID SHROUD RESPECTIVELY, A FIRST RADIAL EDGE OF EACH OF SAID BLADES BEING CURVED IN A DIRECTION AWAY FROM A RADIAL LINE EXTENDING BETWEEN SAID SHAFT AND SAID SHROUD, THE RADIAL BLADE EDGE OPPOSITE SAID CURVED EDGE BEING SUBSTANTIALLY STRAIGHT, THE RADIUS OF CURVATURE OF SAID BLADE GRADUALLY AND SMOOTHLY INCREASING BETWEEN SAID CURVED AND SAID STRAIGHT RADIAL EDGES.
Claim 2
Dependent Claim
114 words
A ROTOR FOR A WAVE MACHINE COMPRISING A CIRCULAR SHAFT, A CYLINDRICAL SHROUD SURROUNDING SAID SHAFT, A PLURALITY OF BLADES EACH POSITIONED SUBSTANTIALLY IN A RADIAL DIRECTION BETWEEN SAID SHAFT AND SAID SHROUD, OPPOSITE AXIAL EDGES OF EACH OF SAID BLADES BEING SECURED TO THE OUTER SURFACE AND THE INNER SURFACE OF SAID SHAFT AND SAID SHROUD RESPECTIVELY, A FIRST RADIAL EDGE OF EACH OF SAID BLADES BEING CURVED IN A DIRECTION AWAY FROM A RADIAL LINE EXTENDING BETWEEN SAID SHAFT AND SAID SHROUD, THE RADIAL BLADE EDGE OPPOSITE SAID CURVED EDGE BEING SUBSTANTIALLY STRAIGHT, THE RADIUS OF CURVATURE OF SAID BLADE GRADUALLY AND SMOOTHLY INCREASING BETWEEN SAID CURVED AND SAID STRAIGHT RADIAL EDGES.
References Cited (Backward Citations)
US2675173A
Cited
US2867981A
Cited
US2904246A
Cited
US2959344A
Cited
FR1214693A
Cited
GB840408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |