US3739945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valve for fluid dispensing nozzle
Assignee: Dover Corp
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Filing: 1971-05-17
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Granted: 1973-06-19
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Expires: 1991-05-17
Abstract
Abstract A fluid dispensing nozzle has two pressurized fluids supplied thereto through two separate passages extending through a member, which is supported in a passage in the nozzle body whereby the pressureized fluids mix within the body passage. The supported member has a valve supported at its end having the outlets of the passages with the valve having a separate portion controlling each of the passages. When there is flow through only one of the passages in the supported member, the portion of the valve cooperating therewith is moved to an open position by the fluid flow and the fluid pressure exerts a pressure on the portion of the valve cooperating with other passage to seal close said valve portion to insure that there is no leakage from the body passage into the passage in the member not having pressurized fluid supplied thereto.
Inventors
- 👤 G Moore
- 👤 R Guertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:01
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/423; B67D7/44; B67D7/46; B67D7/48; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7843
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
147 words
An insert for use with a fluid dispensing nozzle to enable the nozzle to dispense two different fluids separately or together therefrom including a member having a first passage extending therethrough with one end of said first passage adapted to receive a first pressurized fluid and its other end adapted to direct the first pressurized fluid to a passage in the nozzle, a second passage extending therethrough with one end of said second passage adapted to receive a second pressurized fluid and its other end adapted to direct the second pressurized fluid to the passage in the nozzle, and a single valve member supported by said member at its outlet end to prevent communication between said first passage and the nozzle passage unless the first pressurized fluid is flowing therethrough and between said second passage and the nozzle passage unless the second pressurized fluid is flowing therethrough.
Claim 2
Dependent Claim
147 words
An insert for use with a fluid dispensing nozzle to enable the nozzle to dispense two different fluids separately or together therefrom including a member having a first passage extending therethrough with one end of said first passage adapted to receive a first pressurized fluid and its other end adapted to direct the first pressurized fluid to a passage in the nozzle, a second passage extending therethrough with one end of said second passage adapted to receive a second pressurized fluid and its other end adapted to direct the second pressurized fluid to the passage in the nozzle, and a single valve member supported by said member at its outlet end to prevent communication between said first passage and the nozzle passage unless the first pressurized fluid is flowing therethrough and between said second passage and the nozzle passage unless the second pressurized fluid is flowing therethrough.
Claim 3
Dependent Claim
122 words
The insert according to claim 1 in which said single valve member includes a first portion cooperating with the outlet of said first passage, a second portion cooperating with the outlet of said second passage, said first portion being movable by the flow of the first pressurized fluid through said first passage to aid said second portion in preventing communication between said second passage and the nozzle passage when pressurized fluid is flowing through only said first passage, and said second portion being movable by the flow of the second pressurized fluid through said second passage to aid said first portion in preventing communication between said first passage and the nozzle passage when pressurized fluid is flowing through only said second passage.
Claim 4
Dependent Claim
226 words
The nozzle according to claim 1 in which said single valve has a central portion, a first outer portion adjacent one side of said central portion, and a second outer portion adjacent the other side of said central portion; said central portion being relatively thin in comparison with the thickness of each of said first and second outer portions; said first outer portion and an adjacent portion of said central portion cooperating with the outlet of said first passage to prevent communication between said first passage and the nozzle passage in the absence of the first pressurized fluid; said second outer portion and an adjacent portion of said central portion cooperating with the outlet of said second passage to prevent communication between said second passage and the nozzle passage in the absence of the second pressurized fluid; said first outer portion being actuated to provide communication between said first passage and said nozzle passage when there is flow only through said first passage, said flow aiding said second outer portion in preventing communication between said second passage and said nozzle passage and said second outer portion being actuated to provide communication between said seconD passage and said nozzle passage when there is flow only through said second passage said flow aiding said first outer portion in preventing communication between said first passage and said nozzle passage.
Claim 5
Dependent Claim
107 words
A fluid dispensing nozzle including a body having a passage therein, valve means to control flow through said passage, an insert member mounted in said body passage, said member having first and second passages extending therethrough, each of said passages being connected with a separate source of pressurized fluid, and a single valve secured to the outlet end of said insert member to engage the outlet ends of said first and second member passages, said valve preventing flow from one of said first and second passages to the other through said body passage when only one member passage has pressurized fluid flowing therethrough to said body passage.
Claim 6
Dependent Claim
107 words
A fluid dispensing nozzle including a body having a passage therein, valve means to control flow through said passage, an insert member mounted in said body passage, said member having first and second passages extending therethrough, each of said passages being connected with a separate source of pressurized fluid, and a single valve secured to the outlet end of said insert member to engage the outlet ends of said first and second member passages, said valve preventing flow from one of said first and second passages to the other through said body passage when only one member passage has pressurized fluid flowing therethrough to said body passage.
Claim 7
Dependent Claim
81 words
The nozzle according to claim 4 in which said single valve has a first portion cooperating with the outlet of said first passage to prevent communication between said first passage and said body passage in the absence of the first pressurized fluid in said first passage and a second portion cooperating with the outlet of said second passage to prevent communication between said second passage and said body passage in the absence of the second pressurized fluid in said second passage.
Claim 8
Dependent Claim
244 words
The nozzle according to claim 4 in which said single valve has a central portion, a first outer portion adjacent one side of said central portion, and a second outer portion adjacent the other side of said central portion; said central portion being relatively thin in comparison with the thickness of each of said first and second outer portions; said first outer portion and an adjacent portion of said central portion cooperating with the outlet of said first passage to prevent communication between said first passage and said body passage in the absence of the first pressurized fluid in said first passage; said second outer portion and an adjacent portion of said central portion cooperating with the outlet of said second passage to prevent communication between said second passage and said body passage in the absence of the second pressurized fluid in said second passage; said first outer portion being actuated to provide communication between said first passage and said body passage when there is first pressurized fluid only through said first passage, said fluid pressure causing said second outer portion to seal and prevent communication between said body passage and said second passage and said second outer portion being actuated to provide communication between said second passage and said body passage when there is second pressurized fluid only through said second passage, said fluid pressure causing said first outer portion to seal and prevent communication between said body passage and said first passage.
Claim 9
Dependent Claim
50 words
The nozzle according to claim 1 including a passage volume reducing plug disposed in said body passage between said member and said valve means wherein the volume in said body passage in which fluid remains when fluid flow stops is reduced by the volume of said passage volume reducing plug.
References Cited (Backward Citations)
US106433A
Cited
US2743843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |