Patent US3635577A successfully refreshed from Google Patents.
US3635577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial unit
Assignee: Aerostatic Ltd
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Filing: 1969-04-07
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Granted: 1972-01-18
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Expires: 1989-04-07
Abstract
Abstract A turbine rotor construction, for example in a gas turbine, has in combination an outer annular member, an inner annular member disposed in coaxial radially spaced relationship to said outer annular member, and first impeller blading means disposed between said outer annular member and saId inner annular member.
Inventors
- 👤 Colin W Dee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:39
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/284; F01D1/00; F01D1/02; F01D1/04; F01D5/02; F01D5/022; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F02C3/073
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
In a turbine, the combination of an annular stator member, and a rotor member disposed in radially spaced relationshIp within said stator member and defining therewith a fluid journal bearing gap, said rotor member including: i. an outer tubular member made of a metal selected to withstand tensile stresses resulting from centrifugal force as the rotor is rotated ii. a first inner tubular member made of ceramic material and disposed in contact within and supported radially by said outer tubular member, and iii. first ceramic impeller blading disposed within and carried by said first inner tubular member iv. a second tubular inner member made of ceramic material and disposed coaxially in radially spaced relationship within said first inner tubular member v. second ceramic impeller blading disposed within and carried by said second tubular inner member.
Claim 2
Dependent Claim
135 words
In a turbine, the combination of an annular stator member, and a rotor member disposed in radially spaced relationshIp within said stator member and defining therewith a fluid journal bearing gap, said rotor member including: i. an outer tubular member made of a metal selected to withstand tensile stresses resulting from centrifugal force as the rotor is rotated ii. a first inner tubular member made of ceramic material and disposed in contact within and supported radially by said outer tubular member, and iii. first ceramic impeller blading disposed within and carried by said first inner tubular member iv. a second tubular inner member made of ceramic material and disposed coaxially in radially spaced relationship within said first inner tubular member v. second ceramic impeller blading disposed within and carried by said second tubular inner member.
Claim 3
Dependent Claim
14 words
The combination of claim 1 wherein said annular stator member is of ceramic material.
Claim 4
Dependent Claim
138 words
A turbine comprising: a rotor construction which comprises in combination a tubular outer member, a tubular inner member disposed in coaxial spaced relationship within said tubular outer member, and outer impeller blading disposed between said outer tubular member and said inner tubular member, said outer tubular member and said inner tubular member and said impeller blading being made of a metal selected to withstand tensile stresses resulting from centrifugal force occuring as the rotor is rotated, a tubular ceramic member disposed in contact within and supported radially by said inner tubular member, and ceramic inner impeller blading disposed within and carried by said tubular ceramic member; and an annular stator member disposed in radially spaced relationship about said tubular outer member and defining therewith a fluid journal bearing gap, said annular stator member being made of ceramic material.
Claim 5
Dependent Claim
138 words
A turbine comprising: a rotor construction which comprises in combination a tubular outer member, a tubular inner member disposed in coaxial spaced relationship within said tubular outer member, and outer impeller blading disposed between said outer tubular member and said inner tubular member, said outer tubular member and said inner tubular member and said impeller blading being made of a metal selected to withstand tensile stresses resulting from centrifugal force occuring as the rotor is rotated, a tubular ceramic member disposed in contact within and supported radially by said inner tubular member, and ceramic inner impeller blading disposed within and carried by said tubular ceramic member; and an annular stator member disposed in radially spaced relationship about said tubular outer member and defining therewith a fluid journal bearing gap, said annular stator member being made of ceramic material.
Claim 6
Dependent Claim
145 words
A turbine rotor construction with comprises in combination a tubular outer member made of a metal selected to withstand tensile stresses resulting from centrifugal force occuring as the rotor is rotated, an outer tubular ceramic member disposed in contact within and supported radially by said tubular outer member, a tubular ceramic inner member disposed in coaxial spaced relationship within said tubular ceramic outer member, ceramic outer blading carried between said inner and outer ceramic tubular members, ceramic inner impeller blading disposed within and carried by said inner tubular ceramic member, and a ceramic hub disposed within and integral with said inner impeller blading, said hub having an external cylindrical surface, and an annular stator member disposed in radially spaced relationship about said external cylindrical surface of said hub and defining therewith a fluid journal bearing gap, said annular stator member being made of ceramic material.
Claim 7
Dependent Claim
145 words
A turbine rotor construction with comprises in combination a tubular outer member made of a metal selected to withstand tensile stresses resulting from centrifugal force occuring as the rotor is rotated, an outer tubular ceramic member disposed in contact within and supported radially by said tubular outer member, a tubular ceramic inner member disposed in coaxial spaced relationship within said tubular ceramic outer member, ceramic outer blading carried between said inner and outer ceramic tubular members, ceramic inner impeller blading disposed within and carried by said inner tubular ceramic member, and a ceramic hub disposed within and integral with said inner impeller blading, said hub having an external cylindrical surface, and an annular stator member disposed in radially spaced relationship about said external cylindrical surface of said hub and defining therewith a fluid journal bearing gap, said annular stator member being made of ceramic material.
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |