US3275294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fluid apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1963-11-14
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Granted: 1966-09-27
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Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 James M Allen
- 👤 Augustine J Scalzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:05
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/041; F01D5/00; F01D5/02; F01D5/08; F01D5/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A BLADED DIAPHRAGM STRUCTURE FOR AN AXIAL FLOW ELASTIC FLUID UTILIZING MACHINE, COMPRISING AN ANNULAR ROW OF RADIALLY EXTENDING BLADES, SAID BLADES HAVING A VANE PORTION, A RADIALLY OUTERMOST TIP PORTION AND A RADIALLY INNERMOST BASE PORTION, AN ANNULAR SHROUD STRUCTURE COOPERATIVELY ASSOCIATED WITH SAID PORTIONS FOR SUPPORTING SAID BLADES, SAID BASE PORTIONS BEING SIMILARLY SHAPED AND HAVING COMPLEMENTARY INTERLOCKING PORTIONS, AND AN ANNULAR BAND IN THE FORM OF A RELATIVELY THIN STRIP RIGIDLY CONNECTED TO EACH OF SAID BASE PORTIONS AND MAINTAINING SAID BASE PORTIONS IN FRICTIONALLY INTERLOCKING RELATION WITH EACH OTHER, SAID BAND BEING OF SUFFICIENT FLEXIBILITY TO PERMIT RADIAL EXPANSION AN D BENDING OF SAID BLADES IN CIRCUMFERENTIAL DIRECTION AND TO EFFECT VIBRATION DAMPING OF SAID BLADES.
Claim 2
Dependent Claim
120 words
A BLADED DIAPHRAGM STRUCTURE FOR AN AXIAL FLOW ELASTIC FLUID UTILIZING MACHINE, COMPRISING AN ANNULAR ROW OF RADIALLY EXTENDING BLADES, SAID BLADES HAVING A VANE PORTION, A RADIALLY OUTERMOST TIP PORTION AND A RADIALLY INNERMOST BASE PORTION, AN ANNULAR SHROUD STRUCTURE COOPERATIVELY ASSOCIATED WITH SAID PORTIONS FOR SUPPORTING SAID BLADES, SAID BASE PORTIONS BEING SIMILARLY SHAPED AND HAVING COMPLEMENTARY INTERLOCKING PORTIONS, AND AN ANNULAR BAND IN THE FORM OF A RELATIVELY THIN STRIP RIGIDLY CONNECTED TO EACH OF SAID BASE PORTIONS AND MAINTAINING SAID BASE PORTIONS IN FRICTIONALLY INTERLOCKING RELATION WITH EACH OTHER, SAID BAND BEING OF SUFFICIENT FLEXIBILITY TO PERMIT RADIAL EXPANSION AN D BENDING OF SAID BLADES IN CIRCUMFERENTIAL DIRECTION AND TO EFFECT VIBRATION DAMPING OF SAID BLADES.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |