US3667685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irrigation devices
Assignee: MENACHEN SEGAL
•
Filing: 1970-04-06
•
Granted: 1972-06-06
•
Expires: 1990-04-06
Abstract
Abstract An irrigation device effecting drip action of water fed from a central tube by effecting a substantial pressure drop along the path of the water as it flows from the central feed tube to the exit of the device. The flow path of the water is labyrinthine so that the water path continuously reverses in order to create substantial turbulence to maintain in suspension the foreign matter to minimize the likelihood of clogging. The labyrinthine path causes the water to travel a considerable distance, thereby increasing the pressure drop so that the water drips at a slow rate.
Inventors
- 👤 Isaac Rinkewich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/023; A01G25/006; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
146 words
An irrigation device comprising a first circumferentially extending wall, a second circumferentially extending wall spaced from and surrounding said first wall, means cooperating between said first and second walls to define a closed chamber between said first and second walls, inlet means for communicating with said closed chamber from the exterior of said device, outlet means for communicating with said closed chamber from the exterior of said device, and passage-defining means extending between said first and second walls to define a continuous passage in said chamber between said inlet and outlet means, said passage-defining means constructed and arranged to provide a plurality of longitudinally extending, adjacent, parallel conduits, all said conduits being substantially equally spaced from said first wall, each of said conduits communicating with an adjacent conduit only at one end thereof, whereby to define a passage of constantly reversing configuration along the longitudinal axis.
Claim 2
Dependent Claim
146 words
An irrigation device comprising a first circumferentially extending wall, a second circumferentially extending wall spaced from and surrounding said first wall, means cooperating between said first and second walls to define a closed chamber between said first and second walls, inlet means for communicating with said closed chamber from the exterior of said device, outlet means for communicating with said closed chamber from the exterior of said device, and passage-defining means extending between said first and second walls to define a continuous passage in said chamber between said inlet and outlet means, said passage-defining means constructed and arranged to provide a plurality of longitudinally extending, adjacent, parallel conduits, all said conduits being substantially equally spaced from said first wall, each of said conduits communicating with an adjacent conduit only at one end thereof, whereby to define a passage of constantly reversing configuration along the longitudinal axis.
Claim 3
Dependent Claim
106 words
An irrigation device as claimed in claim 1 and including an inner sleeve and an outer sleeve, the outside surface of said inner sleeve and the inside surface of said outer sleeve forming said spaced walls, said inner sleeve having a first end extending beyond said outer sleeve in one direction and said outer sleeve having a first end extending beyond said inner sleeve in an opposite direction, said first ends of each of said inner and outer sleeves being provided with means for connecting said sleeves to an irrigation pipe, said passage-defining means including a plurality of ribs extending between said inner and outer sleeves.
Claim 4
Dependent Claim
52 words
An irrigation device as claimed in claim 2 wherein said outer sleeve is provided with a flange intermediate the ends thereof and said inner sleeve has a second end in engagement with said flange, said inlet means comprising a passage through the wall of said inner sleeve proximate said second end thereof.
Claim 5
Dependent Claim
87 words
An irrigation device as claimed in claim 3 wherein said outer sleeve has a second end overlying the outside surface of said first sleeve intermediate the ends thereof, said outlet means being located proximate said second end of said outer sleeve and comprising an outlet rib extending between said first and second walls in a direction generally perpendicular to said plurality of ribs, said outlet rib defining a space between said first and second walls whereby to define an outlet in communication with said constantly reversing passage.
Claim 6
Dependent Claim
77 words
An irrigation device as claimed in claim 4 wherein alternate ones of said plurality of ribs extend respectively from said first and second walls as an integral part thereof and wherein one pair of said plurality of ribs extending from one of said walls is spaced a distance so as to closely receive a rib extending from the other of said walls, whereby to provide for proper alignment of all remaining ribs of said plurality of ribs.
Claim 7
Dependent Claim
45 words
An irrigation device, as claimed in claim 1, wherein said first wall comprises the outside surface of an irrigation pipe and said second wall comprises a flexible plastic element adapted to be assembled on and genErally conform to the outside surface of said irrigation pipe.
Claim 8
Dependent Claim
50 words
An irrigation device, as claimed in claim 6, wherein said passage-defining means comprises a plurality of ribs extending from said second wall and integral therewith, said ribs being parallel, one to another, said ribs being spaced so as to define a plurality of adjacent, parallel conduits of constantly reversing configuration.
Claim 9
Dependent Claim
25 words
An irrigation device as claimed in claim 7, wherein said inlet means comprises a tube extending from said second wall and communicating with said passage.
Claim 10
Dependent Claim
42 words
An irrigation device as claimed in claim 8 and further including an outlet rib extending from said second wall substantially transverse to said plurality of ribs, the height of said outlet rib being less than the height of said plurality of ribs.
Claim 11
Dependent Claim
49 words
An irrigation device as claimed in claim 7 and including a pair of locking elements at opposite side edges of said second wall and a locking member engageable with said locking elements for securing said irrigation device about the external surface of an irrigation pipe in watertight relationship therewith.
Claim 12
Dependent Claim
37 words
An irrigation device as claimed in claim 10 wherein each of said locking elements is separated from an associated side edge of said second wall by a thinned section of plastic material, whereby to define a hinge.
Claim 13
Dependent Claim
49 words
An irrigation device as claimed in claim 11 wherein said locking elements are tapered and are biased toward one another by said locking member, said locking member being slideably mounted on said tapered locking elements, the amount of biasing force being related to the position of said locking member.
References Cited (Backward Citations)
US1883656A
Cited
US2693391A
Cited
US3221996A
Cited
US3199791A
Cited
US3438711A
Cited
FR1514437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |