Patent US3318573A successfully refreshed from Google Patents.
US3318573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for maintaining rotor disc of gas turbine engine at a low temperature
Assignee: DIRECTOR OF NAT AEROSPACE LAB
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Filing: 1965-08-16
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Granted: 1967-05-09
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Matsuki Masakatsu
- 👤 Torisaki Tadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:24
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D5/084; F01D5/30; F01D5/3007; F01D5/3015; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
ROTOR FOR A GAS TURBINE ENGINE, COMPRISING A ROTOR DISC MOUNTED ON A ROTATABLE SHAFT, A PLURALITY OF BLADES MOUNTED IN SPACED RELATION AROUND THE PERIPHERY OF THE DISC, EACH BLADE COMPRISING A WORKING PORTION, A STEM AND A ROOT PORTION, GUIDE PLATES ARRANGED ON BOTH SIDES OF THE ROTOR ADJACENT THE STEMS AND SO POSITIONED TO LEAVE A GAP BETWEEN THE BOTTOM EDGE OF THE PLATE AND THE ROTOR ON ONE SIDE AND A GAP BETWEEN THE TOP EDGE OF THE PLATE AND THE TOPS OF THE BLADE STEMS ON THE OTHER SIDE OF THE ROTOR TO FORM COOLING FLUID ENTRY AND EXIT HAP OPENINGS, RESPECTIVELY, AT DIFFERENT RADIAL DISTANCES FROM THE ROTOR FOR THE SPACE FORMED BETWEEN THE GUIDE PLATES, TONGUE ELEMENTS ON THE GUIDE PLATES EXTENDING LATERALLY THEREFROM AND COOPERATING WITH THE INNER NOZZLE RINGS OF THE ENGINE,
Claim 2
Dependent Claim
141 words
ROTOR FOR A GAS TURBINE ENGINE, COMPRISING A ROTOR DISC MOUNTED ON A ROTATABLE SHAFT, A PLURALITY OF BLADES MOUNTED IN SPACED RELATION AROUND THE PERIPHERY OF THE DISC, EACH BLADE COMPRISING A WORKING PORTION, A STEM AND A ROOT PORTION, GUIDE PLATES ARRANGED ON BOTH SIDES OF THE ROTOR ADJACENT THE STEMS AND SO POSITIONED TO LEAVE A GAP BETWEEN THE BOTTOM EDGE OF THE PLATE AND THE ROTOR ON ONE SIDE AND A GAP BETWEEN THE TOP EDGE OF THE PLATE AND THE TOPS OF THE BLADE STEMS ON THE OTHER SIDE OF THE ROTOR TO FORM COOLING FLUID ENTRY AND EXIT HAP OPENINGS, RESPECTIVELY, AT DIFFERENT RADIAL DISTANCES FROM THE ROTOR FOR THE SPACE FORMED BETWEEN THE GUIDE PLATES, TONGUE ELEMENTS ON THE GUIDE PLATES EXTENDING LATERALLY THEREFROM AND COOPERATING WITH THE INNER NOZZLE RINGS OF THE ENGINE,
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |