Patent US4055056A successfully refreshed from Google Patents.
US4055056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible refrigerant system and four-way reversing valve therefor or the like
Assignee: Robertshaw Controls Co
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Filing: 1976-05-17
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Granted: 1977-10-25
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Expires: 1996-05-17
Abstract
Abstract In a refrigerant system having a compressor and a pair of coils operatively interconnected to a reversing valve that is adapted to selectively interconnect one of the discharge side and suction side of the compressor to one of the coils while interconnecting the other of the discharge side and the suction side of the compressor to the other of the coils so that one of the coils will act as a condensor and the other coil will act as an evaporator, the improvement wherein the reversing valve has movable ball valve members for affecting the reversing operation thereof under the control of a solenoid operated pilot valve that biases a piston of a piston and cylinder arrangement that is operatively interconnected to the ball valve members.
Inventors
- 👤 Charles H. Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:36
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F25; F25B; F25B13/00; F25B41/00; F25B41/20; F25B41/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
In a refrigerant system having a compressor and a pair of coils operatively interconnected to a reversing valve for selectively interconnecting one of the discharge side and the suction side of said compressor to one of said coils while interconnecting the other of the discharge side and the suction side of said compressor to the other of said coils so that one of said coils will act as a condensor and the other coil will act as an evaporator, the improvement wherein said reversing valve has four separate movable ball valve means for effecting the reversing operation thereof, said reversing valve having a housing means carrying said ball valve means, a single actuating means carried by said housing means, and a lever pivotally interconnected to said actuating means and to said ball valve means to control said reversing operation thereof.
Claim 2
Dependent Claim
140 words
In a refrigerant system having a compressor and a pair of coils operatively interconnected to a reversing valve for selectively interconnecting one of the discharge side and the suction side of said compressor to one of said coils while interconnecting the other of the discharge side and the suction side of said compressor to the other of said coils so that one of said coils will act as a condensor and the other coil will act as an evaporator, the improvement wherein said reversing valve has four separate movable ball valve means for effecting the reversing operation thereof, said reversing valve having a housing means carrying said ball valve means, a single actuating means carried by said housing means, and a lever pivotally interconnected to said actuating means and to said ball valve means to control said reversing operation thereof.
Claim 3
Dependent Claim
49 words
In a refrigerant system as set forth in claim 1, said housing means being provided with a pair of port means respectively leading to said coils and having two pairs of valve seats respectively on opposite sides of said port means, said ball valve means controlling said valve seats.
Claim 4
Dependent Claim
30 words
In a refrigerant system as set forth in claim 2, said ball valve means for each of said pair of valve seats comprising a pair of interconnected spaced apart balls.
Claim 5
Dependent Claim
28 words
In a refrigerant system as set forth in claim 3, one pair of said spaced apart balls being respectively disposed outboard of their respective pair of valve seats.
Claim 6
Dependent Claim
28 words
In a refrigerant system as set forth in claim 3, one pair of said spaced apart balls being respectively disposed inboard of their respective pair of valve seats.
Claim 7
Dependent Claim
23 words
In a refrigerant system as set forth in claim 3, said pairs of interconnected balls being interconnected together to move as a unit.
Claim 8
Dependent Claim
21 words
In a refrigerant system as set forth in claim 1, said actuator means comprising a fluid operated piston and cylinder means.
Claim 9
Dependent Claim
27 words
In a refrigerant system as set forth in claim 7, a pilot means carried by said housing means for controlling said fluid operated piston and cylinder means.
References Cited (Backward Citations)
US1800352A
Cited
US2140451A
Cited
GB537372A
Cited
US2300263A
Cited
US2758447A
Cited
US2878832A
Cited
DE1161099B
Cited
US3119308A
Cited
US3194266A
Cited
US3190079A
Cited
US3364942A
Cited
US3664581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |