Patent US3280582A successfully refreshed from Google Patents.
US3280582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration valve and system
Assignee: Standard Machine and Manufacturing Co
•
Filing: 1964-05-25
•
Granted: 1966-10-25
•
Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Knaebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25B1/00; F25B41/00; F25B41/20; F25B2600/00; F25B2600/02; F25B2600/026; F25B2600/0261; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/86895
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN A REFRIGERATION SYSTEM: (A) A COMPRESSOR HAVING MULTIPLE CYLINDERS, (B) A CONDENSER, (C) A DISCHARGE LINE CONNECTING THE DISCHARGE SIDE OF ONE CYLINDER TO THE CONDENSER, (D) AN EVAPORATOR CONNECTED TO THE CONDENSER AND CONNECTED TO THE SUCTION LINE OF THE COMPRESSOR, (E) A BY-PASS VALVE HAVING AN INLET AND A PAIR OF OUTLETS, THE INLET BEING CONNECTED TO THE DISCHARGE SIDE OF ANOTHER CYLINDER, (F) ONE OF THE OUTLETS CONNECTED TO THE DISCHARGE LINE OF THE SAID ONE CYLINDER, AND THE OTHER OUTLET CONNECTED TO THE SUCTION LINE, AND (G) MEANS SELECTIVELY REGULATING FLOW FROM THE INLET TO EITHER OF THE OUTLETS.
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) | 1969-10-24 | 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 |