US3196630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant horsepower control valve
Assignee: Alco Valve Co
•
Filing: 1961-07-31
•
Granted: 1965-07-27
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 William J Barbier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:35
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7834
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A REFRIGERATION SYSTEM OF THE TYPE HAVING A COMPRESSOR, A CONDENSER, AN EXPANSION DEVICE AND AN EVAPORATOR PIPED IN SERIES, WITH A SENSING BULB CONNECTED TO THE EXPANSION DEVICE AND POSITIONED DOWNSTREAM OF THE EVAPORATOR, A PILOT VALVE COMPRISING A VALVE HOUSING HAVING AN INLET PORT CONNECTED UPSTREAM OF THE EVAPORATOR AND AN OUTLET PORT CONNECTED DOWNSTREAM OF THE EVAPORATOR, A PARTITION WITHIN THE HOUSING SEPARATING ITS INTERIOR INTO TWO CHAMBERS, AN ORIFICE THROUGH THE PARTITION THROUGH WHICH REFRIGERANT FLUID CAN FLOW, THE PARTITION DEFINING A PLANAR FACE IMMEDIATELY ADJACENT THE EDGE OF THE ORIFICE, A MEMBER MOVABLE RELATIVE TO THE ORIFICE FOR ALTERNATELY THROTTLING AND OPENING THE ORIFICE, THE MEMBER HAVING A PLANAR FACE ON IT OPPOSITE THE PLANAR FACE OF THE PARTITTION, AND MEANS FOR AUTOMATICALLY MAINTAINING THE FACE OF THE MEMBER SUBSTANTIALLY PARALLEL TO THE FACE OF THE PARTITION, HAVING A BODY PORTION DEFINING A PORTION OF THE SPHERE, AND MEANS DEFINING A SEAT WITHIN WHICH THE
Claim 2
Dependent Claim
161 words
IN A REFRIGERATION SYSTEM OF THE TYPE HAVING A COMPRESSOR, A CONDENSER, AN EXPANSION DEVICE AND AN EVAPORATOR PIPED IN SERIES, WITH A SENSING BULB CONNECTED TO THE EXPANSION DEVICE AND POSITIONED DOWNSTREAM OF THE EVAPORATOR, A PILOT VALVE COMPRISING A VALVE HOUSING HAVING AN INLET PORT CONNECTED UPSTREAM OF THE EVAPORATOR AND AN OUTLET PORT CONNECTED DOWNSTREAM OF THE EVAPORATOR, A PARTITION WITHIN THE HOUSING SEPARATING ITS INTERIOR INTO TWO CHAMBERS, AN ORIFICE THROUGH THE PARTITION THROUGH WHICH REFRIGERANT FLUID CAN FLOW, THE PARTITION DEFINING A PLANAR FACE IMMEDIATELY ADJACENT THE EDGE OF THE ORIFICE, A MEMBER MOVABLE RELATIVE TO THE ORIFICE FOR ALTERNATELY THROTTLING AND OPENING THE ORIFICE, THE MEMBER HAVING A PLANAR FACE ON IT OPPOSITE THE PLANAR FACE OF THE PARTITTION, AND MEANS FOR AUTOMATICALLY MAINTAINING THE FACE OF THE MEMBER SUBSTANTIALLY PARALLEL TO THE FACE OF THE PARTITION, HAVING A BODY PORTION DEFINING A PORTION OF THE SPHERE, AND MEANS DEFINING A SEAT WITHIN WHICH THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |