US4135738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trail line moves
Assignee: IRECO IND Inc
•
Filing: 1977-08-03
•
Granted: 1979-01-23
•
Expires: 1997-08-03
Abstract
Abstract Trail line irrigation moves have split swivel couplers of which each has two identical halves rotatable on split bearing rings on an axle having seals thereon and coupled to pipe lengths by press-on or clamp-on connector portion. The axle has holes connecting the pipe lengths to the interior of the swivel halves, and the bottom half has a check valve drain and the top half has a cross connector with a sprinkler mounted on the top, a quick connect coupler cross-arms, a plug in one cross-arm and a trail line coupled to one cross arm. The trail line is connected by a quick connection coupler to a reversible skid shoe having a sprinkler riser and a drain plug.
Inventors
- 👤 Lloyd W. Clements
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:31
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/09; F; F16; F16L; F16L27/00; F16L27/08; F16L27/087
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
In an irrigation swivel coupler, a pipe having lateral ports and a pair of exterior annular collars defining outer thrust abutments bracketing the ports and spaced therefrom, a swivel tube fitting loosely on the pipe and having in the end portions thereof a pair of interior annular collars defining inner thrust abutments and positioned between and spaced from the outer thrust abutments, a pair of bearing rings positioned between the tube and the pipe and between the inner and outer thrust abutments, the interior annular collars being spaced inwardly from the ends of the swivel tubes to define sockets receiving the rings, and a pair of seals positioned between the inner thrust abutments and bracketing the ports.
Claim 2
Dependent Claim
117 words
In an irrigation swivel coupler, a pipe having lateral ports and a pair of exterior annular collars defining outer thrust abutments bracketing the ports and spaced therefrom, a swivel tube fitting loosely on the pipe and having in the end portions thereof a pair of interior annular collars defining inner thrust abutments and positioned between and spaced from the outer thrust abutments, a pair of bearing rings positioned between the tube and the pipe and between the inner and outer thrust abutments, the interior annular collars being spaced inwardly from the ends of the swivel tubes to define sockets receiving the rings, and a pair of seals positioned between the inner thrust abutments and bracketing the ports.
Claim 3
Dependent Claim
13 words
The irrigation swivel coupler of claim 1 wherein the bearing rings are split.
Claim 4
Dependent Claim
19 words
The irrigation swivel coupler of claim 2 wherein the bearing rings are of a lubricant impregnated organic plastic composition.
Claim 5
Dependent Claim
63 words
The irrigation swivel coupler of claim 1 wherein the swivel tube is split and has two pairs of opposed side flanges, dowel means on the side flanges, a pair of gaskets between the side flanges and located by the dowel means in sealing engagement with the bearing rings, and securing means securing the pairs of flanges together in positions pressing against the gaskets.
Claim 6
Dependent Claim
27 words
The irrigation swivel coupler of claim 4 wherein the side flanges are crowned and the securing means are bolts positioned near the ends of the side flanges.
References Cited (Backward Citations)
US186435A
Cited
US378566A
Cited
US2412487A
Cited
US3603508A
Cited
US3567234A
Cited
US3837657A
Cited
US3807638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |