Patent US929169A successfully refreshed from Google Patents.
Patent US3926375A successfully refreshed from Google Patents.
US3926375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weeper irrigation device
Assignee: MENDENHALL EDWARD V
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Filing: 1975-02-03
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Granted: 1975-12-16
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Expires: 1995-02-03
Abstract
Abstract A weeper irrigation device having first and second flow responsive valve members, the first valve member being effective in response to the initiation of water flow to seat and restrict water flow therepast to a desired weeper flow, and the second valve member being seatable by gravity in a slightly open position over the inner end of the inlet passage to the weeper device and having several functions. These include preventing foreign matter from entering the weeper device, assuring and expediting seating of the first valve member, preventing gyrations of the first valve member and providing reliable weeper flow control over a wider pressure range of the water supply.
Inventors
- 👤 Wilbur C Reeder
- 👤 Norman D Batterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:31
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/023; B; B05; B05B; B05B15/00; B05B15/50; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A weeper irrigating device comprising a tubular housing having an inlet passage at the lower end thereof connectable to a source of pressurized water at one end and an outlet passage at the upper end thereof, a valve seat embracing the inner end of the each of said passages, said seat on the inner end of said outlet passage having a minute flow passage thereacross, first and second flow responsive freely movable valve members held captive between said valve seats, said first valve member being seatable on the valbe seat at the inner end of said outlet passage to restrict the escape of water from said weeper device so long as said inlet passage is connected to a source of pressurized water, and said second valve member being held slightly ajar from said valve seat at the inner end of said inlet passage by water flow therepast so long as there is a flow of pressurized water past said first valve member via said minute flow passage.
Claim 2
Dependent Claim
167 words
A weeper irrigating device comprising a tubular housing having an inlet passage at the lower end thereof connectable to a source of pressurized water at one end and an outlet passage at the upper end thereof, a valve seat embracing the inner end of the each of said passages, said seat on the inner end of said outlet passage having a minute flow passage thereacross, first and second flow responsive freely movable valve members held captive between said valve seats, said first valve member being seatable on the valbe seat at the inner end of said outlet passage to restrict the escape of water from said weeper device so long as said inlet passage is connected to a source of pressurized water, and said second valve member being held slightly ajar from said valve seat at the inner end of said inlet passage by water flow therepast so long as there is a flow of pressurized water past said first valve member via said minute flow passage.
Claim 3
Dependent Claim
38 words
A weeper device is defined in claim 1 characterized in that said second valve is effective in cooperation with the valve seat at the inner end of said inlet passage to exclude the passagge of foreign matter therepast.
Claim 4
Dependent Claim
30 words
A weeper device as defined in claim 1 characterized in that said first and second valve member comprises separate spheres of smaller diameter than the interior of said tubular housing.
Claim 5
Dependent Claim
66 words
A weeper device as defined in claim 3 characterized in that said second valve member is operable to seat against said valve seat at the inner end of said inlet passage and seals off the escape of water backwardly through said inlet passage in response to a reversal of the pressure differential thereacross from that prevailing when the water supply to said inlet passage is pressurized.
Claim 6
Dependent Claim
84 words
A weeper device as defined in claim 1 characterized in that said inlet passage comprises a short rigid tube projecting from one end of said tubular housing, said rigid tube adapted to be forcibly inserted through a snug-fitting opening through the sidewall of a water supply duct, and a radial enlargement on the outer end of said rigid tube adapted to engage the rim edge of the inner end of said snug-fitting opening to hold said weeper device assembled to a water supply duct.
Claim 7
Dependent Claim
66 words
A weeper device as defined in claim 1 characterized in that said outlet passage comprises a short rigid tube projecting from one end of said tubular housing, and a short length of tubing having a snug but detachable telescopic fit over the outer end of said rigid tube to effectively convey a weeper flow of water from said weeper device to a selected place of deposit.
Claim 8
Dependent Claim
40 words
A weeper device as defined in claim 6 characterized in that said weeper device is located below the suRface of the ground to be irrigated and with the discharge end of said rigid tube positioned above the adjacent ground surface.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |