US3844686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacity control device for reciprocating compressor
Assignee: Carrier Corp
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Filing: 1973-06-04
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Granted: 1974-10-29
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Expires: 1993-06-04
Abstract
Abstract A control device for regulating the capacity of a reciprocating compressor employed in a refrigeration unit includes a solenoid disposed within the outer walls of the compressor. The solenoid has first and second operating positions and is selectively placed therein in response to normal operating conditions within the refrigeration unit. A cable device is suitably connected to the solenoid and includes fork members pivotally mounted thereon. The cable device moves in response to movement of the solenoid, the fork members thereby being rotated to either load or unload a suction valve regulating the passage of gas into a cylinder of the compressor.
Inventors
- 👤 Blanc J Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:18
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/24; F04B49/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A device for varying the capacity of a reciprocating compressor employed in a refrigeration unit, the device being operable during normal operating conditions of said unit, comprising: a. a suction valve for regulating the passage of refrigerant gas into a cylinder of said compressor; b. a solenoid disposed within the Outer walls of the compressor; c. means to sense operating conditions within the refrigeration unit, and being further operable to selectively place said solenoid in first and second operating positions; and d. means operably connected to said solenoid and said suction valve to place said suction valve in an unloaded state when said solenoid is placed in its first operating position in response to predetermined conditions within said refrigeration unit, said means being further operable to place said suction valve in a loaded state when said solenoid is placed in its second operating position, said means comprising a cable member connected at one end to said solenoid and at its other end to a spring member, said cable being positioned about the periphery of said cylinder; and fork members pivotally connected to said cable member, movement of said solenoid causing said fork members to rotate to selectively load or unload said suction valve.
Claim 2
Independent Claim
203 words
A device for varying the capacity of a reciprocating compressor employed in a refrigeration unit, the device being operable during normal operating conditions of said unit, comprising: a. a suction valve for regulating the passage of refrigerant gas into a cylinder of said compressor; b. a solenoid disposed within the Outer walls of the compressor; c. means to sense operating conditions within the refrigeration unit, and being further operable to selectively place said solenoid in first and second operating positions; and d. means operably connected to said solenoid and said suction valve to place said suction valve in an unloaded state when said solenoid is placed in its first operating position in response to predetermined conditions within said refrigeration unit, said means being further operable to place said suction valve in a loaded state when said solenoid is placed in its second operating position, said means comprising a cable member connected at one end to said solenoid and at its other end to a spring member, said cable being positioned about the periphery of said cylinder; and fork members pivotally connected to said cable member, movement of said solenoid causing said fork members to rotate to selectively load or unload said suction valve.
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |