Patent US3226940A successfully refreshed from Google Patents.
US3226940A
Expired / Lapsed
US
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Single stage centrifugal compressor refrigeration system
Assignee: Worthington Corp
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Filing: 1963-12-12
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Granted: 1966-01-04
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Walter K Jekat
- 👤 Donald E Chubb
- 👤 Birger O G Hugoson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:58
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F04; F04D; F04D17/00; F04D17/08; F04D17/10; F04D17/12; F04D17/127; F25B2400/00; F25B2400/13; F25B2400/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN A CLOSED REFRIGERATION SYSTEM CIRCULATING A VAPORIZABLE REFRIGERANT AND INCLUDING A CONDENSER FORMING A HIGH PRESSURE STAGE AND AN EVAPORATOR IN THE SYSTEM FORMING A LOW PRESSURE STAGE: (A) A SINGLE STAGE CENTRIFUGAL COMPRESSOR HAVING A SUCTION INLET CONNECTED TO RECEIVE REFRIGERANT GAS FROM THE LOW PRESSURE STAGE, AND HAVING AN OUTLET DISCHARGING HOT COMPRESSED REFRIGERANT GAS TO THE HIGH PRESSURE STAGE, (B) RECEIVER MEANS INTERCONNECTING SAID HIGH PRESSURE STAGE AND LOW PRESSURE STAGE RESPECTIVELY AND HOLDING REFRIGERANT CONDENSATE IN LIQUID AND VAPOR PHASE AT A PRESSURE LESS THAN CONDENSER PRESSURE AND HIGHER THAN EVAPORATOR PRESSURE TO FLASH AT LEAST A PORTION OF THE SO HELD REFRIGERANT INTO THE VAPOR PHASE, AND (C) CONDUIT MEANS COMMUNICATING THE VAPOR HOLDING PORTION OF SAID RECEIVER MEANS WITH THE COMPRESSOR AT A POINT PAST THE SUCTION INLET OF THE COMPRESSOR FOR MIXING FLASHED GAS WHICH IS AT A PRESSURE HIGHER THAN THE SUCTION INLET PRESSURE WITH HOT COMPRESSED GAS PRIOR TO DISCHARGE THEREOF FROM THE COMPRESSOR OUTLET.
Claim 2
Dependent Claim
165 words
IN A CLOSED REFRIGERATION SYSTEM CIRCULATING A VAPORIZABLE REFRIGERANT AND INCLUDING A CONDENSER FORMING A HIGH PRESSURE STAGE AND AN EVAPORATOR IN THE SYSTEM FORMING A LOW PRESSURE STAGE: (A) A SINGLE STAGE CENTRIFUGAL COMPRESSOR HAVING A SUCTION INLET CONNECTED TO RECEIVE REFRIGERANT GAS FROM THE LOW PRESSURE STAGE, AND HAVING AN OUTLET DISCHARGING HOT COMPRESSED REFRIGERANT GAS TO THE HIGH PRESSURE STAGE, (B) RECEIVER MEANS INTERCONNECTING SAID HIGH PRESSURE STAGE AND LOW PRESSURE STAGE RESPECTIVELY AND HOLDING REFRIGERANT CONDENSATE IN LIQUID AND VAPOR PHASE AT A PRESSURE LESS THAN CONDENSER PRESSURE AND HIGHER THAN EVAPORATOR PRESSURE TO FLASH AT LEAST A PORTION OF THE SO HELD REFRIGERANT INTO THE VAPOR PHASE, AND (C) CONDUIT MEANS COMMUNICATING THE VAPOR HOLDING PORTION OF SAID RECEIVER MEANS WITH THE COMPRESSOR AT A POINT PAST THE SUCTION INLET OF THE COMPRESSOR FOR MIXING FLASHED GAS WHICH IS AT A PRESSURE HIGHER THAN THE SUCTION INLET PRESSURE WITH HOT COMPRESSED GAS PRIOR TO DISCHARGE THEREOF FROM THE COMPRESSOR OUTLET.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |