US3280589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow metering device for refrigeration system
Assignee: Carrier Corp
•
Filing: 1964-07-10
•
Granted: 1966-10-25
•
Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 James A Papapanu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:15
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/315; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A REFRIGERANT FLOW METERING DEVICE FOR A REGRIGERATION CIRCUIT, COMPRISING, MEANS INCLUDING A CHAMBER FOR CONTAINING LIQUID REFRIGERANT, MEANS DEFINING AN INLET FOR THE PASSAGE OF LIQUID REFRIGERANT INTO SAID CHAMBER, OUTLET MEANS INCLUDING MEANS DEFINING AN OUTLET FOR THE PASSAGE OF LIQUID REFRIGERANT FROM SAID CHAMBER, A STANDPIPE IN SAID CHAMBER AND CONNECTED WITH SAID OUTLET, AND MEANS DEFINING A VERTICALLY SPACED SERIES OF ORIFICES IN SAID STANDPIPE FOR AT LEAST PARTIAL SUBMERSION IN LIQUID REFRIGERANT IN SAID CHAMBER AND FOR METERING SUBSTANTIALLY THE ENTIRE FLOW OF REFRIGERANT FROM SAID CHAMBER THROUGH SAID OUTLET DURING PARTIAL LOAD COOLING OPERATION, AND MEANS INCLUDING A NORMALLY CLOSED VALVE OPENING INTO SAID OUTLET FOR
Claim 2
Dependent Claim
112 words
A REFRIGERANT FLOW METERING DEVICE FOR A REGRIGERATION CIRCUIT, COMPRISING, MEANS INCLUDING A CHAMBER FOR CONTAINING LIQUID REFRIGERANT, MEANS DEFINING AN INLET FOR THE PASSAGE OF LIQUID REFRIGERANT INTO SAID CHAMBER, OUTLET MEANS INCLUDING MEANS DEFINING AN OUTLET FOR THE PASSAGE OF LIQUID REFRIGERANT FROM SAID CHAMBER, A STANDPIPE IN SAID CHAMBER AND CONNECTED WITH SAID OUTLET, AND MEANS DEFINING A VERTICALLY SPACED SERIES OF ORIFICES IN SAID STANDPIPE FOR AT LEAST PARTIAL SUBMERSION IN LIQUID REFRIGERANT IN SAID CHAMBER AND FOR METERING SUBSTANTIALLY THE ENTIRE FLOW OF REFRIGERANT FROM SAID CHAMBER THROUGH SAID OUTLET DURING PARTIAL LOAD COOLING OPERATION, AND MEANS INCLUDING A NORMALLY CLOSED VALVE OPENING INTO SAID OUTLET FOR
References Cited (Backward Citations)
GB252647A
Cited
US1830022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |