Patent US3253816A successfully refreshed from Google Patents.
US3253816A
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De-aeration of sealing fluid in aerated rotary fluid machines
Assignee: Library and Archives Canada
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Filing: 1965-03-12
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Granted: 1966-05-31
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Expires: 1985-03-12
Abstract
No abstract record available.
Inventors
- 👤 Robert S Sproule
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:33
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/02; F03B11/00; F03B11/002; F03B11/006; F04; F04D; F04D29/00; F04D29/08; F04D29/16; F04D29/165; F04D29/167; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A ROTARY FLUID MACHINE COMPRISING A STATIONARY HOUSING, A ROTATING MEMBER, SAID ROTATING MEMBER COMPRISING AXIALLY SPACED UPPER AND LOWER SHROUDS HAVING A PLURALITY OF BLADES SECURED THEREBETWEEN AND DEFINING A FLUID FLOW CHANNEL, SAID STATIONARY HOUSING FORMING SHROUD SPACES BETWEEN THE SAID UPPER AND LOWER SHROUDS AND SAID HOUSING, MEANS FOR INTRODUCING AIR TO THE SHROUD SPACES, RADIAL EXTENSIONS ON THE IMPELLER SHROUS FOR PROVIDING A PATH OF FLOW FROM THE SHROUD SPACES TO THE IMPELLER INTAKE ON AN INCREASING RADIUS, AND MEANS FOR WITHDRAWING AIR AND WATER MIXTURE DISPOSED ADJACENT THE RADIAL EXTENSIONS, THE RADIAL EXTENSIONS ACTING AS A BARRIE TO THE FLOW OF AIR INTO THE IMPELLER INTAKE FROM THE SHROUD SPACES.
Claim 2
Dependent Claim
116 words
IN A ROTARY FLUID MACHINE COMPRISING A STATIONARY HOUSING, A ROTATING MEMBER, SAID ROTATING MEMBER COMPRISING AXIALLY SPACED UPPER AND LOWER SHROUDS HAVING A PLURALITY OF BLADES SECURED THEREBETWEEN AND DEFINING A FLUID FLOW CHANNEL, SAID STATIONARY HOUSING FORMING SHROUD SPACES BETWEEN THE SAID UPPER AND LOWER SHROUDS AND SAID HOUSING, MEANS FOR INTRODUCING AIR TO THE SHROUD SPACES, RADIAL EXTENSIONS ON THE IMPELLER SHROUS FOR PROVIDING A PATH OF FLOW FROM THE SHROUD SPACES TO THE IMPELLER INTAKE ON AN INCREASING RADIUS, AND MEANS FOR WITHDRAWING AIR AND WATER MIXTURE DISPOSED ADJACENT THE RADIAL EXTENSIONS, THE RADIAL EXTENSIONS ACTING AS A BARRIE TO THE FLOW OF AIR INTO THE IMPELLER INTAKE FROM THE SHROUD SPACES.
References Cited (Backward Citations)
US3174719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |