US4165034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid mixing valve construction and method of making the same
Assignee: Robertshaw Controls Co
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Filing: 1978-01-25
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Granted: 1979-08-21
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Expires: 1998-01-25
Abstract
Abstract A fluid mixing valve construction having a housing provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet and with a valve member operated by a condition responsive unit for controlling the valve seats in accordance with the condition of fluid passing to the outlet and sensed by the condition responsive unit. A second condition responsive unit is operatively interconnected to the valve member to close one of the valve seats with the valve member if the first mentioned condition responsive unit does not close the one valve seat with the valve member even though the same is sensing a condition that would require the first mentioned condition responsive unit to close the one valve seat whereby the fluid mixing valve construction is substantially fail-safe.
Inventors
- 👤 Arden D. Rogers, Jr.
- 👤 Clifford E. Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:46
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/1366; G05D23/1373; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
In a fluid mixing valve construction having a housing means provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet and with valve member means operated by condition responsive means for controlling said valve seats in accordance with the condition of the fluid passing to said outlet and sensed by said condition responsive means, a second condition responsive means being operatively interconnected to said valve member means to close one of said valve seats with said valve member means if the first-mentioned condition responsive means does not close the one valve seat with said valve member means even though the same is sensing a condition that would require the same to close said one valve seat, the improvement wherein said second condition responsive means acts directly on said first-mentioned condition responsive means to move said first-mentioned condition responsive means and said valve member means relative to said housing means to close said one valve seat if said first-mentioned condition responsive means does not close said one valve seat with said valve member means even though the same is sensing a condition that would require the same to close said one valve seat.
Claim 2
Dependent Claim
199 words
In a fluid mixing valve construction having a housing means provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet and with valve member means operated by condition responsive means for controlling said valve seats in accordance with the condition of the fluid passing to said outlet and sensed by said condition responsive means, a second condition responsive means being operatively interconnected to said valve member means to close one of said valve seats with said valve member means if the first-mentioned condition responsive means does not close the one valve seat with said valve member means even though the same is sensing a condition that would require the same to close said one valve seat, the improvement wherein said second condition responsive means acts directly on said first-mentioned condition responsive means to move said first-mentioned condition responsive means and said valve member means relative to said housing means to close said one valve seat if said first-mentioned condition responsive means does not close said one valve seat with said valve member means even though the same is sensing a condition that would require the same to close said one valve seat.
Claim 3
Dependent Claim
25 words
A fluid mixing valve construction as set forth in claim 1 wherein said condition responsive means each comprises a piston and cylinder temperature responsive unit.
Claim 4
Dependent Claim
208 words
In a method of making a fluid mixing valve construction having a housing means provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet and with valve member means operated by condition responsive means for controlling said valve seats in accordance with the condition of the fluid passing to said outlet and sensed by said condition responsive means, a second condition responsive means being operatively interconnected to said valve member means to close one of said valve seats with said valve member means if the first-mentioned condition responsive means does not close the one valve seat with said valve member means even though the same is sensing a condition that could require the same to close said one valve seat, the improvement comprising the step of disposing said second condition responsive means to act directly on said first-mentioned condition responsive means to move said first-mentioned condition responsive means and said valve member means relative to said housing means to close said one valve seat if said first-mentioned condition responsive means does not close said one valve seat with said valve member means even though the same is sensing a condition that would require the same to close said one valve seat.
Claim 5
Dependent Claim
208 words
In a method of making a fluid mixing valve construction having a housing means provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet and with valve member means operated by condition responsive means for controlling said valve seats in accordance with the condition of the fluid passing to said outlet and sensed by said condition responsive means, a second condition responsive means being operatively interconnected to said valve member means to close one of said valve seats with said valve member means if the first-mentioned condition responsive means does not close the one valve seat with said valve member means even though the same is sensing a condition that could require the same to close said one valve seat, the improvement comprising the step of disposing said second condition responsive means to act directly on said first-mentioned condition responsive means to move said first-mentioned condition responsive means and said valve member means relative to said housing means to close said one valve seat if said first-mentioned condition responsive means does not close said one valve seat with said valve member means even though the same is sensing a condition that would require the same to close said one valve seat.
Claim 6
Dependent Claim
35 words
A method of making a fluid mixing valve construction as set forth in claim 3 and including the step of forming each of said condition responsive means from a piston and cylinder temperature responsive unit.
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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) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |