US3094271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for refrigerant compressor
Assignee: Garrett Corp
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Filing: 1962-07-12
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Granted: 1963-06-18
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Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Harold A Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:26
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/14; F04D29/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A TURBINE DRIVEN CENTRIFUGAL COMPRESSOR: A HOUSING; A SHAFT ROTATABLY MOUNTED IN SAID HOUSING; AN IMPELLER CHAMBER ADJOINING SAID HOUSING; A COMPRESSOR IMPELLER MOUNTED ON SAID SHAFT FOR ROTATION IN SAID IMPELLER CHAMBER; A DRIVING TURBINE OPERATIVELY CONNECTED TO SAID SHAFT; A PLATE MEMBER MOUNTED ON SAID SHAFT AND HAVING AN ANNULAR VALVE SEAT DISPOSED CONTIGUOUS SAID IMPELLER; FIRST SEALING MEANS FOR PREVENTING LEAKAGE OF FLUIDS BETWEEN SAID HOUSING AND SAID IMPELLER CHAMBER INCLUDING PISTON MEANS SURROUNDING SAID SHAFT AND HAVING AN ANNULAR VALVE CLOSURE MEMBER ADAPTED TO BE MOVED INTO AND OUT OF ENGAGEMENT WITH SAID VALVE SEAT; MEANS DEFINING A CYLINDRICAL CHAMBER, SAID PISTON MEANS BEING DISPOSED FOR MOVEMENT IN SAID CYLINDRICAL CHAMBER;
Claim 2
Dependent Claim
116 words
IN A TURBINE DRIVEN CENTRIFUGAL COMPRESSOR: A HOUSING; A SHAFT ROTATABLY MOUNTED IN SAID HOUSING; AN IMPELLER CHAMBER ADJOINING SAID HOUSING; A COMPRESSOR IMPELLER MOUNTED ON SAID SHAFT FOR ROTATION IN SAID IMPELLER CHAMBER; A DRIVING TURBINE OPERATIVELY CONNECTED TO SAID SHAFT; A PLATE MEMBER MOUNTED ON SAID SHAFT AND HAVING AN ANNULAR VALVE SEAT DISPOSED CONTIGUOUS SAID IMPELLER; FIRST SEALING MEANS FOR PREVENTING LEAKAGE OF FLUIDS BETWEEN SAID HOUSING AND SAID IMPELLER CHAMBER INCLUDING PISTON MEANS SURROUNDING SAID SHAFT AND HAVING AN ANNULAR VALVE CLOSURE MEMBER ADAPTED TO BE MOVED INTO AND OUT OF ENGAGEMENT WITH SAID VALVE SEAT; MEANS DEFINING A CYLINDRICAL CHAMBER, SAID PISTON MEANS BEING DISPOSED FOR MOVEMENT IN SAID CYLINDRICAL CHAMBER;
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |