US3610279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valve construction, system and method
Assignee: Robertshaw Controls Co
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Filing: 1970-02-26
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Granted: 1971-10-05
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Expires: 1990-02-26
Abstract
Abstract This application discloses a valve construction having a modulating pilot diaphragm fluid control which cooperates with an adjustable pilot which remains stationary after adjustment to control the flow of the fluid. This valve construction may be used in a construction having a hot water inlet, a cold water inlet, a mixing chamber connected to said cold water inlet and said hot water inlet, a hot and mixed water outlet connected to said mixing chamber, and a variable flow control construction controlling the flow of cold water from said cold water inlet to said mixing chamber. This variable flow control construction may be a modulating control construction, so that the water flow from the cold water inlet may be modulated to the desired volume to produce the desired mixture of hot and cold water at the mixed water outlet. Other fluids, instead of hot and cold water, may be controlled and mixed by the valve construction. More than two fluids may enter more than two inlets in the valve construction. A flexible variable orifice means may be used adjacent one or more of the inlets. The valve construction may be unitary or homogeneous, such as a casting.
Inventors
- 👤 Harold A Mcintosh
- 👤 Gordon K Slocum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:06
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1393; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; F16K15/1471; Y; Y10; Y10S; Y10S251/00; Y10S251/902; Y10T; Y10T137/00; Y10T137/6416; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7881; Y10T137/7882; Y10T137/7885; Y10T137/8593; Y10T137/86187; Y10T137/86228; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
152 words
In combination, a valve construction having a cylindraceous hot water inlet wall, a cylindraceous mixing chamber wall connected and aligned with said hot water inlet wall, a cylindraceous mixed water outlet wall connected to and aligned with said mixing chamber wall, a cylindraceous cold water inlet wall perpendicular to and supported by said mixing chamber wall, a fixed cold water diaphragm seat orifice wall formed in said mixing chamber wall and connected in cold water flow relationship to said cold water inlet wall and to said mixing chamber wall, said diaphragm seat orifice wall being surrounded by a diaphragm support wall, said walls being homogeneously formed together, a diaphragm having a pilot opening construction and a bleed opening construction, a pilot chamber means sealingly holding said diaphragm on said diaphragm support wall construction, and a pilot plunger means reciprocable in said pilot chamber means toward and away from said piLot opening construction.
Claim 2
Dependent Claim
152 words
In combination, a valve construction having a cylindraceous hot water inlet wall, a cylindraceous mixing chamber wall connected and aligned with said hot water inlet wall, a cylindraceous mixed water outlet wall connected to and aligned with said mixing chamber wall, a cylindraceous cold water inlet wall perpendicular to and supported by said mixing chamber wall, a fixed cold water diaphragm seat orifice wall formed in said mixing chamber wall and connected in cold water flow relationship to said cold water inlet wall and to said mixing chamber wall, said diaphragm seat orifice wall being surrounded by a diaphragm support wall, said walls being homogeneously formed together, a diaphragm having a pilot opening construction and a bleed opening construction, a pilot chamber means sealingly holding said diaphragm on said diaphragm support wall construction, and a pilot plunger means reciprocable in said pilot chamber means toward and away from said piLot opening construction.
Claim 3
Dependent Claim
19 words
A combination according to claim 1 with said pilot chamber means having a cylindraceous diaphragm engaging and sealing wall.
Claim 4
Dependent Claim
17 words
A combination according to claim 1 with said pilot chamber means having a pilot plunger bearing means.
Claim 5
Dependent Claim
26 words
A combination according to claim 1 with said pilot chamber means having a cylindraceous diaphragm engaging and sealing wall and having a pilot plunger bearing means.
Claim 6
Dependent Claim
152 words
In combination, a valve construction having a cylindraceous first fluid inlet wall, a cylindraceous mixing chamber wall connected and aligned with said first fluid inlet wall, a cylindraceous mixed fluid outlet wall connected to and aligned with said mixing chamber wall, a cylindraceous second fluid inlet wall perpendicular to and supported by said mixing chamber wall, a fixed second fluid diaphragm seat orifice wall formed in said mixing chamber wall and connected in second fluid flow relationship to said second fluid inlet wall and to said mixing chamber wall, said diaphragm seat orifice wall being surrounded by a diaphragm support wall, said walls being homogeneously formed together, a diaphragm having a pilot opening construction and a bleed opening construction, a pilot chamber means sealingly holding said diaphragm on said diaphragm support wall construction, and a pilot plunger means reciprocable in said pilot chamber means toward and away from said pilot opening construction.
Claim 7
Dependent Claim
152 words
In combination, a valve construction having a cylindraceous first fluid inlet wall, a cylindraceous mixing chamber wall connected and aligned with said first fluid inlet wall, a cylindraceous mixed fluid outlet wall connected to and aligned with said mixing chamber wall, a cylindraceous second fluid inlet wall perpendicular to and supported by said mixing chamber wall, a fixed second fluid diaphragm seat orifice wall formed in said mixing chamber wall and connected in second fluid flow relationship to said second fluid inlet wall and to said mixing chamber wall, said diaphragm seat orifice wall being surrounded by a diaphragm support wall, said walls being homogeneously formed together, a diaphragm having a pilot opening construction and a bleed opening construction, a pilot chamber means sealingly holding said diaphragm on said diaphragm support wall construction, and a pilot plunger means reciprocable in said pilot chamber means toward and away from said pilot opening construction.
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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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |