US3630236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mini-flow irrigation device
Assignee: Individual
•
Filing: 1970-06-29
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Granted: 1971-12-28
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Expires: 1990-06-29
Abstract
Abstract A continuous mini-flow irrigation device wherein a metering cone having a metering slot therein is adjustably inserted through a resilient washer for adjustably metering flow through the irrigation device. Full flow through the device is achieved when the metering cone is fully inserted through the washer, which insures that the metering slot will not become plugged with debris and further wherein under varying pressure conditions the washer will be deformed into the metering slot to maintain a uniform continuous flow from the irrigation device.
Inventors
- 👤 Richard E Diggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3006
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
An irrigation device for maintaining a continuous and constant low rate of flow therethrough, comprising a tubular body means, a resilient washer mounted in said body means between the ends thereof, said washer having a central opening therethrough, a tapered, generally cone-shaped metering element adjustably mounted in said body means downstream of said washer and having a reduced diameter tip portion and an enlarged diameter base portion, said tip portion of said metering element received in said central opening in said resilient washer, a metering slot in at least one side of said metering element extending axially through said base portion, said slot increasing in crosssectional area toward the base portion, whereby as said tip portion and said slot are extended further into and through said central opening the flow rate through the device is increased.
Claim 2
Dependent Claim
136 words
An irrigation device for maintaining a continuous and constant low rate of flow therethrough, comprising a tubular body means, a resilient washer mounted in said body means between the ends thereof, said washer having a central opening therethrough, a tapered, generally cone-shaped metering element adjustably mounted in said body means downstream of said washer and having a reduced diameter tip portion and an enlarged diameter base portion, said tip portion of said metering element received in said central opening in said resilient washer, a metering slot in at least one side of said metering element extending axially through said base portion, said slot increasing in crosssectional area toward the base portion, whereby as said tip portion and said slot are extended further into and through said central opening the flow rate through the device is increased.
Claim 3
Dependent Claim
70 words
An irrigation device as in claim 1, wherein said metering slot extends from a point spaced axially inwardly from the end of said reduced diameter tip portion through said enlarged diameter base portion, the end of said tip portion having a diameter substantially equal to the diameter of the central opening through said washer so that flow through said device is precluded when said end is received in said opening.
Claim 4
Dependent Claim
31 words
An irrigation device as in claim 1, wherein said metering element is secured within a cylindrical sleeve, and said resilient washer is secured within said sleeve upstream of said metering element.
Claim 5
Dependent Claim
18 words
An irrigation device as in claim 3, wherein said metering element is threadably adjustably received in said sleeve.
Claim 6
Dependent Claim
42 words
An irrigation device as in claim 4, wherein said resilient washer deforms into said metering slot in said metering element under high-pressure conditions upstream of said washer to decrease the flow cross section and maintain a constant flow through said irrigation device.
Claim 7
Dependent Claim
33 words
An irrigation device as in claim 5, wherein a radially inwardly extending shoulder is formed in said cylindrical sleeve intermediate the ends thereof and wherein said resilient washer is clamped against said shoulder.
Claim 8
Dependent Claim
36 words
An irrigation device as in claim 6, wherein an adapter fitting is secured within the upstream end of said cylindrical sleeve and said resilient washer is clamped between the end of said fitting and said shoulder.
Claim 9
Dependent Claim
35 words
An irrigation device as in claim 7, wherein the downstream end of said cylindrical sleeve is externally threaded for attachment thereto of conduit means for conveying the metered flow of water to a remote area.
Claim 10
Dependent Claim
34 words
An irrigation device as in claim 8, wherein a plurality of outlets are connected to a common inlet, with a metering means as aforedescribed independently adjustably fitted in each of said plurality of outlets.
Claim 11
Dependent Claim
12 words
An irrigation device as in claim 9, wherein there are two outlets.
Claim 12
Dependent Claim
12 words
An irrigation device as in claim 9, wherein there are five outlets.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |