US3598321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leaf spring nozzle flow control
Assignee: Delavan Manufacturing Co
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Filing: 1969-01-31
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Granted: 1971-08-10
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Expires: 1989-01-31
Abstract
Abstract A leaf spring nozzle flow control which is positioned in the nozzle body controls the flow of fluid to a fixed restriction nozzle such that the flow varies substantially in direct linear relationship with the pressure of the fluid. The flow control includes a plate having a plurality of leaf spring valves which are biased by the fluid pressure from a first position in which flow to the nozzle is blocked to a second position in which the fluid flows to the nozzle when the pressure of the fluid exceeds a predetermined minimum magnitude as determined by the leaf spring.
Inventors
- 👤 Darrel G Bobzin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:45
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/24; F23D11/26; F23D11/36; F23D11/38; F23D11/383
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
162 words
A nozzle flow control device for controlling the flow of fluid through a fixed restriction spray orifice, said device comprising, a plate which is adapted to be mounted adjacent the orifice, an elongated slot in said plate extending from the perimeter thereof to a point within the perimeter of the plate, a recessed cavity in one face of the plate which is adapted to communicate with the orifice, a first passage in said plate communicating between the periphery of said plate and said elongated slot, a second passage in said plate communicating between said elongated slot and said cavity, and resilient elongated spring means having one end fixed and the other end of said spring means extending into said elongated slot and being moveable between a first position in which communication between said passages is blocked and a second position in which communication between said passages is established when the pressure of the fluid in the first passage exceeds a predetermined magnitude.
Claim 2
Dependent Claim
162 words
A nozzle flow control device for controlling the flow of fluid through a fixed restriction spray orifice, said device comprising, a plate which is adapted to be mounted adjacent the orifice, an elongated slot in said plate extending from the perimeter thereof to a point within the perimeter of the plate, a recessed cavity in one face of the plate which is adapted to communicate with the orifice, a first passage in said plate communicating between the periphery of said plate and said elongated slot, a second passage in said plate communicating between said elongated slot and said cavity, and resilient elongated spring means having one end fixed and the other end of said spring means extending into said elongated slot and being moveable between a first position in which communication between said passages is blocked and a second position in which communication between said passages is established when the pressure of the fluid in the first passage exceeds a predetermined magnitude.
Claim 3
Dependent Claim
24 words
The device of claim 1 wherein said resilient spring means blocks communication between said first passage and said elongated slot in said first position.
Claim 4
Dependent Claim
15 words
The device of claim 1 wherein said resilient elongated spring means is a leaf spring.
Claim 5
Dependent Claim
22 words
The device of claim 3 wherein said leaf spring is fixed at said one end in a second slot in the plate.
Claim 6
Dependent Claim
18 words
The device of claim 1 wherein said elongated slot extends in depth through the thickness of said plate.
Claim 7
Dependent Claim
16 words
The device of claim 1 wherein said plate and said cavity are substantially circular and concentric.
Claim 8
Dependent Claim
14 words
The device of claim 6 wherein said second passage communicates tangentially with said cavity.
Claim 9
Dependent Claim
49 words
The device of claim 1 wherein said first passage comprises a notched channel in the perimeter of said plate extending between the opposite faces of the plate, and a bore extending between said notched channel and said elongated slot and substantially parallel to the opposite faces of the plate.
Claim 10
Dependent Claim
127 words
A fluid nozzle assembly comprising, a tubular nozzle body closed at one end, a fixed restriction spray orifice in said closed one end of said tubular body, a plate carried in said tubular body adjacent said closed end, said plate having a chamber therein and first and second fluid flow passages communicating with said chamber, fluid delivery means for delivering the fluid to be sprayed from a source of pressurized fluid to said first passage, said second passage communicating with said orifice, and elongated resilient valve means in said chamber, said valve means being moveable in response to the pressure of the fluid from a first position in which fluid flow to said orifice is blocked to a second position in which fluid flows to said orifice.
Claim 11
Dependent Claim
127 words
A fluid nozzle assembly comprising, a tubular nozzle body closed at one end, a fixed restriction spray orifice in said closed one end of said tubular body, a plate carried in said tubular body adjacent said closed end, said plate having a chamber therein and first and second fluid flow passages communicating with said chamber, fluid delivery means for delivering the fluid to be sprayed from a source of pressurized fluid to said first passage, said second passage communicating with said orifice, and elongated resilient valve means in said chamber, said valve means being moveable in response to the pressure of the fluid from a first position in which fluid flow to said orifice is blocked to a second position in which fluid flows to said orifice.
Claim 12
Dependent Claim
28 words
The assembly of claim 9 wherein said first passage comprises a notched channel in the edge of said plate extending substantially parallel to the axis of said plate.
Claim 13
Dependent Claim
36 words
The assembly of claim 9 including a sleeve carried in said tubular body, said plate being positioned in said sleeve and said sleeve defines at least in part said first and second passages and said chamber.
Claim 14
Dependent Claim
44 words
The assembly of claim 11 wherein said fluid delivery means comprises a second plate positioned against said first plate to maintain said first-mentioned plate in position adjacent said closed end, said fluid delivery passage means in said second plate communicating with said first passage.
Claim 15
Dependent Claim
20 words
The assembly of claim 12 wherein said fluid delivery passage means is defined at least in part by said sleeve.
Claim 16
Dependent Claim
24 words
The assembly of claim 9 wherein said first and second passages and said chamber are defined at least in part by said nozzle body.
Claim 17
Dependent Claim
13 words
The assembly of claim 9 wherein said valve means comprises a leaf spring.
Claim 18
Dependent Claim
39 words
The assembly of claim 9 wherein said plate includes a plurality of said first and second passages, said chambers and said valve means, one of each forming a fluid flow path between said fluid delivery means and said orifice.
Claim 19
Dependent Claim
29 words
The assembly of claim 9 wherein said body includes second fluid delivery means for delivering a second fluid to the spray issuing from said orifice for mixing the fluids.
Claim 20
Dependent Claim
28 words
The assembly of claim 9 wherein said elongated resilient valve means blocks the flow to said orifice when the pressure of the fluid is below a predetermined magnitude.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |