Patent US4721408A successfully refreshed from Google Patents.
US4721408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water distribution system
Assignee: Individual
•
Filing: 1986-10-22
•
Granted: 1988-01-26
•
Expires: 2006-10-22
Abstract
Abstract An improved water distribution system characterized by a construction including an irrifluent pipe disposed below the soil surface for dispersing water or treated waste water at a controlled rate. The irrifluent pipe includes an inner fluid conduit having apertures formed therethrough and an outer cover mounted in partially surrounding relation to the inner conduit and overlying the apertures. The outer cover is attached to the inner fluid conduit in spaced apart relation thereto so that the dispersed fluid slowly seeps into the ground.
Inventors
- 👤 Robert F. Hewlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:57
CPC Classifications
E; E02; E02B; E02B13/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
148 words
An improved water distribution system of the type including a source of water, at least one main delivery conduit and means for passing water from the source through the main delivery conduit, wherein the improvement comprises at least one irrifluent pipe disposed in fluid communicating relation to the main delivery conduit by control filter means attached in interconnecting relation between said irrifluent pipe and the main delivery conduit, said irrifluent pipe comprising an inner fluid conduit and an outer cover fixedly attached in spaced apart relation thereto, said inner fluid conduit comprising at least one aperture formed therethrough and said outer cover overlying said aperture; said outer cover being fixedly attached to said inner fluid conduit by a plurality of water stop means, one of said plurality being on opposite sides of said aperture, an end of said irrifluent pipe remote from said control filter means being capped.
Claim 2
Dependent Claim
148 words
An improved water distribution system of the type including a source of water, at least one main delivery conduit and means for passing water from the source through the main delivery conduit, wherein the improvement comprises at least one irrifluent pipe disposed in fluid communicating relation to the main delivery conduit by control filter means attached in interconnecting relation between said irrifluent pipe and the main delivery conduit, said irrifluent pipe comprising an inner fluid conduit and an outer cover fixedly attached in spaced apart relation thereto, said inner fluid conduit comprising at least one aperture formed therethrough and said outer cover overlying said aperture; said outer cover being fixedly attached to said inner fluid conduit by a plurality of water stop means, one of said plurality being on opposite sides of said aperture, an end of said irrifluent pipe remote from said control filter means being capped.
Claim 3
Dependent Claim
74 words
An improved water distribution system as in claim 1 wherein said control filter means comprises a water conduit having an inside diameter that is substnatially equal to the outside diameter of both the main delivery conduit and the irrifluent pipe, a filter disk mounted within said water conduit downstream of the main delivery conduit, and a distribution disk mounted within said water conduit downstream of said filter disk and upstream of said irrifluent pipe.
Claim 4
Dependent Claim
32 words
An improved water distribution system as in claim 2 wherein said distribution disk includes a central control aperture formed therethrough, whereby the rate of water flow into said irrifluent pipe is limited.
Claim 5
Dependent Claim
21 words
An improved water distribution system as in claim 3 wherein said filter disk includes a plurality of filter apertures formed therethrough.
Claim 6
Dependent Claim
50 words
An improved water distribution system as in claim 2 wherein said control filter means further comprises a filter disk stop means formed on the interior of said water conduit between said filter disk and said distribution disk, whereby said disks are maintained in a spaced apart relation to each other.
Claim 7
Dependent Claim
32 words
An improved water distribution system as in claim 1 wherein said outer cover defines a cross section that is substantially equivalent to one half the cross section of said inner fluid conduit.
Claim 8
Dependent Claim
18 words
An improved water distribution system as in claim 6 wherein said outer cover defines a semicircular cross section.
Claim 9
Dependent Claim
47 words
An improved water distribution system as in claim 1 wherein said water stop means comprises a waterproof adhesive, whereby water exiting from said aperture may not flow past one of said stop means without first exiting said space between said outer cover and said inner fluid conduit.
Claim 10
Dependent Claim
17 words
An improved water distribution system as in claim 1 wherein said irrifluent pipe is disposed below ground.
References Cited (Backward Citations)
US953080A
Cited
US1058582A
Cited
US1604189A
Cited
US2536196A
Cited
US3080124A
Cited
US3966233A
Cited
US4319998A
Cited
US4402631A
Cited
US4522533A
Cited
US4592839A
Cited
US4582605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |