Patent US3953115A successfully refreshed from Google Patents.
Patent US3763876A successfully refreshed from Google Patents.
US3763876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve and mixing assembly
Assignee: GLAS-CRAFT Inc A CORP OF IND
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Filing: 1972-03-21
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Granted: 1973-10-09
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Expires: 1992-03-21
Abstract
Abstract A fluid valve and mixing assembly comprising a valve housing having a fluid nozzle with an inlet end and an outlet end. A first inner conduit is connected to the nozzle inlet end for supplying a first fluid under pressure thereto. A piston is mounted in a sleeve in the housing beyond the nozzle and is provided with a sealing means at one end thereof. Spring means normally bias the piston against the outlet end of the nozzle so that the sealing means normally closes the outlet end. A second outer conduit concentric with the first conduit is connected to the entrance end of the valve housing for supplying a second fluid under pressure thereto. A first fluid passageway is formed between the nozzle and the valve housing to permit the second fluid to initially pass through the valve housing past the nozzle. A second fluid passage is provided around the outside of the piston which is normally closed but which is opened when the piston moves away from the nozzle with the flow of the second fluid. The movement of the piston away opens the nozzle outlet and permits the first fluid to exit from the nozzle and mix with the second fluid whereby the mixture of the fluids then passes through the second passageway to be discharged through the exit end of the valve housing. The first fluid passing through the nozzle has a greater fluid pressure than that of the second fluid passing around the nozzle so that the first fluid upon leaving the nozzle outlet end flows outwardly in the valve housing to mix with the second fluid passing around the outside of the nozzle to facilitate mixing the two fluids. When the flow of the second fluid is cut off, the spring loaded piston returns to its closed position forcing the seal means against the outlet end of the nozzle to cause all fluid flow to cease.
Inventors
- 👤 C Freeman
- 👤 R Hetherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:36
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/0416; B05B7/12; B05B7/1254; B05B7/1263; B05B7/1272; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
325 words
A two-fluid valve and mixing assembly comprising a housing having an entrance opening and an exit opening and a central chamber therebetween; a fluid nozzle carried in the central chamber and forming first and second conduits with the housing in the central chamber, each conduit having its input at the end nearest the entrance end of the housing and its outlet nearest the exit end of the housing; a cylinder formed in the central chamber of the housing adjacent the outlets of the first and second conduits; a piston movably carried in the cylinder adjacent the outlets of the first and second conduits, said piston forming with the cylinder a combined passageway between the outlets of the first and second conduits and the exit opening of the housing, having sealing means at one end adapted to close the outlet of the first conduit, and having at its other end a portion cooperating with the cylinder to close the combined passageway; means to bias the piston and its sealing means against the outlet of the first conduit to seal the first conduit and simultaneously block the combined passageway formed by the piston and cylinder, the outlet of the second conduit being open to the cylinder when the piston is biased against the outlet of the first conduit; first connecting means at the entrance opening of the housing to connect the first conduit of the fluid nozzle with a source of a first fluid under pressure, and second connecting means at the entrance end of the housing to connect the second conduit with a source of a second fluid under pressure, whereby supply of the second fluid under pressure through the outlet of the second conduit moves the piston within the cylinder, opening the outlet of the first conduit and opening the combined passageway so that the first fluid is free to mix with the second fluid and to pass through the exit opening of the housing.
Claim 2
Dependent Claim
325 words
A two-fluid valve and mixing assembly comprising a housing having an entrance opening and an exit opening and a central chamber therebetween; a fluid nozzle carried in the central chamber and forming first and second conduits with the housing in the central chamber, each conduit having its input at the end nearest the entrance end of the housing and its outlet nearest the exit end of the housing; a cylinder formed in the central chamber of the housing adjacent the outlets of the first and second conduits; a piston movably carried in the cylinder adjacent the outlets of the first and second conduits, said piston forming with the cylinder a combined passageway between the outlets of the first and second conduits and the exit opening of the housing, having sealing means at one end adapted to close the outlet of the first conduit, and having at its other end a portion cooperating with the cylinder to close the combined passageway; means to bias the piston and its sealing means against the outlet of the first conduit to seal the first conduit and simultaneously block the combined passageway formed by the piston and cylinder, the outlet of the second conduit being open to the cylinder when the piston is biased against the outlet of the first conduit; first connecting means at the entrance opening of the housing to connect the first conduit of the fluid nozzle with a source of a first fluid under pressure, and second connecting means at the entrance end of the housing to connect the second conduit with a source of a second fluid under pressure, whereby supply of the second fluid under pressure through the outlet of the second conduit moves the piston within the cylinder, opening the outlet of the first conduit and opening the combined passageway so that the first fluid is free to mix with the second fluid and to pass through the exit opening of the housing.
Claim 3
Dependent Claim
26 words
A fluid valve and mixing assembly according to claim 1 wherein the cylinder is formed by a sleeve in the central chamber for guiding the piston.
Claim 4
Dependent Claim
72 words
A fluid valve and mixing assembly according to claim 2 wherein the sleeve has a port on the end away from the fluid nozzle and the piston has a portion of its periphery of lesser dimension than the sleeve to form with the sleeve the combined passageway whereby movement of the piston away from the fluid nozzle opens the port to permit the mixture of fluids to pass therethrough around the piston.
Claim 5
Dependent Claim
43 words
A fluid valve and mixing assembly according to claim 3 wherein the sleeve is cylindrical and has a plurality of ports and the piston has a portion having a plurality of flat sides to form the combined passageway with a plurality of passageways.
Claim 6
Dependent Claim
74 words
A fluid valve and mixing assembly according to claim 1 wherein the inlet of the fluid nozzle and the entrance end of the housing are adapted for connection to concentric inside and outside conduits attached to the valve housing at the entrance end, the inlet of the fluid nozzle retaining the inside conduit and the outside conduit being connected to the entrance end to supply a second fluid for passage around the fluid nozzle.
Claim 7
Dependent Claim
57 words
A fluid valve and mixing assembly according to claim 1 wherein the fluid nozzle includes a portion at the outlet of the second conduit having a plurality of webs extending outwardly therefrom, the webs defining with the fluid nozzle and the housing, a plurality of outlets to permit said second fluid to flow past the fluid nozzle.
Claim 8
Dependent Claim
282 words
A fluid valve and mixing assembly comprising a valve housing having a central chamber with an entrance end and an exit end, a fluid nozzle mounted in the central chamber having an inlet end and an outlet end, a first inner conduit adapted to be connected to the fluid nozzle inlet end for supplying a first fluid under pressure to the outlet end of the fluid nozzle, a sleeve mounted in the chamber beyond the fluid nozzle, the sleeve having a pluralIty of ports in the end away from the nozzle, a piston mounted in the sleeve and movable lengthwise thereof, sealing means mounted at one end of the piston, spring means biasing the piston against the outlet end of the fluid nozzle so that the seal means normally closes the outlet end of the fluid nozzle, a second outer conduit concentric with the first conduit and adapted to be connected to the housing entrance end for supplying a second fluid under pressure to the central chamber, a fluid outlet formed between the fluid nozzle and the sleeve to permit the second fluid to initially pass into the central chamber past the fluid nozzle, and a second fluid passageway formed by the outside of the piston and the sleeve which is normally closed but which is opened when the piston is moved away from the fluid nozzle by the flow of the second fluid, the movement of said piston away from the fluid nozzle also permitting the first fluid to exit from the fluid nozzle and mix with the second fluid whereby the mixture of the fluids passes through the second passageway and is discharged through the exit end of the housing.
Claim 9
Dependent Claim
282 words
A fluid valve and mixing assembly comprising a valve housing having a central chamber with an entrance end and an exit end, a fluid nozzle mounted in the central chamber having an inlet end and an outlet end, a first inner conduit adapted to be connected to the fluid nozzle inlet end for supplying a first fluid under pressure to the outlet end of the fluid nozzle, a sleeve mounted in the chamber beyond the fluid nozzle, the sleeve having a pluralIty of ports in the end away from the nozzle, a piston mounted in the sleeve and movable lengthwise thereof, sealing means mounted at one end of the piston, spring means biasing the piston against the outlet end of the fluid nozzle so that the seal means normally closes the outlet end of the fluid nozzle, a second outer conduit concentric with the first conduit and adapted to be connected to the housing entrance end for supplying a second fluid under pressure to the central chamber, a fluid outlet formed between the fluid nozzle and the sleeve to permit the second fluid to initially pass into the central chamber past the fluid nozzle, and a second fluid passageway formed by the outside of the piston and the sleeve which is normally closed but which is opened when the piston is moved away from the fluid nozzle by the flow of the second fluid, the movement of said piston away from the fluid nozzle also permitting the first fluid to exit from the fluid nozzle and mix with the second fluid whereby the mixture of the fluids passes through the second passageway and is discharged through the exit end of the housing.
Claim 10
Dependent Claim
75 words
A fluid valve and mixing assembly according to claim 7 wherein the sleeve has a port on the end away from the fluid nozzle and the piston has a portion of its periphery of lesser dimension than the sleeve which forms part of the second fluid passageway whereby movement of the piston away from the fluid nozzle opens the port to permit the mixture of fluids to pass therethrough around the end of the piston.
Claim 11
Dependent Claim
48 words
A fluid valve and mixing assembly according to claim 7 wherein the housing has a first section and a second section connected together, the end of the second section abutting against at least a portion of the sleeve to retain the sleeve in position in the central chamber.
References Cited (Backward Citations)
US2688339A
Cited
US2903009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |