US3980098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power assist structure for side roll wheel lines
Assignee: CHZO Inc
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Filing: 1975-05-27
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Granted: 1976-09-14
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Expires: 1995-05-27
Abstract
Abstract A torque-assist mechanism for side roll wheel-line, such mechanism being operative by and responsive to fluid pressure within the axial conduit of the line for rotating or torquing such line at a point removed from a prime mover where associated therewith.
Inventors
- 👤 Burr Courtright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:19
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
173 words
A side-roll wheel line including in combination, a central, axial conduit for supplying irrigation water and having a perforate portion, wheel means mounted to said conduit for carrying the same, a water jacket sealed to and enveloping said perforate portion of said conduit, said water jacket having a fluid outlet port, an elongate fixed leg secured to and transversely extending from said water jacket and having an outer end constructed for sliding on the ground, a main gear keyed to said conduit, a movable leg pivotally disposed relative to said fixed leg, said movable leg carrying pawl means engaging said main gear for advancing the same in response to liftings of said movable leg, a piston and cylinder combination interposed between said movable leg and said fixed leg for successively raising and lowering the former relative to the latter, valve means intercoupled between said jacket port and said cylinder for actuating said piston in successive, opposed directions, and control means responsive to cylinder movement relative to said piston for controlling said valve means.
Claim 2
Dependent Claim
173 words
A side-roll wheel line including in combination, a central, axial conduit for supplying irrigation water and having a perforate portion, wheel means mounted to said conduit for carrying the same, a water jacket sealed to and enveloping said perforate portion of said conduit, said water jacket having a fluid outlet port, an elongate fixed leg secured to and transversely extending from said water jacket and having an outer end constructed for sliding on the ground, a main gear keyed to said conduit, a movable leg pivotally disposed relative to said fixed leg, said movable leg carrying pawl means engaging said main gear for advancing the same in response to liftings of said movable leg, a piston and cylinder combination interposed between said movable leg and said fixed leg for successively raising and lowering the former relative to the latter, valve means intercoupled between said jacket port and said cylinder for actuating said piston in successive, opposed directions, and control means responsive to cylinder movement relative to said piston for controlling said valve means.
Claim 3
Dependent Claim
13 words
The structure of claim 1 wherein said fixed leg includes a ground-contact skid.
Claim 4
Dependent Claim
30 words
The structure of claim 1 wherein said fixed leg is provided with spring-biased pawl means operatively engaging said main gear for preventing the reverse rotation thereof during movable leg descents.
Claim 5
Dependent Claim
17 words
The structure of claim 1 wherein said main gear comprises a ratchet wheel fixed to said conduit.
Claim 6
Dependent Claim
38 words
The structure of claim 1 wherein said control means comprises an actuating rod coupled to said valve means and provided with mutually spaced limit stop means successively engaging said piston and cylinder combination for actuating said valve means.
Claim 7
Dependent Claim
25 words
The structure of claim 1 wherein said cylinder includes a laterally extending arm, said control means being operably connected to and selectively engaging said arm.
Claim 8
Dependent Claim
45 words
The structure of claim 1 wherein said piston includes a hollow piston rod coupled to said valve means and constructed for passing water through said piston, said cylinder including a fixed axial sleeve containing said piston rod, said sleeve being affixed to said movable leg.
Claim 9
Dependent Claim
25 words
The structure of claim 1 wherein said fixed and movable legs are provided with means for guiding the relative movement therebetween in a planar relationship.
Claim 10
Dependent Claim
55 words
In combination, a side roll wheel-line; a prime mover means for torquing and thereby advancing said wheel-line over a field to be irrigated, and means engaging said wheel-line and spaced along said wheel-line remote from said prime mover means for applying supplemental torque to said wheel-line at a point spaced from said prime mover means.
Claim 11
Dependent Claim
55 words
In combination, a side roll wheel-line; a prime mover means for torquing and thereby advancing said wheel-line over a field to be irrigated, and means engaging said wheel-line and spaced along said wheel-line remote from said prime mover means for applying supplemental torque to said wheel-line at a point spaced from said prime mover means.
Claim 12
Dependent Claim
49 words
In combination, an agricultural, irrigation wheel-line including a central, axial, water-flow conduit and wheel means keyingly mounted thereto for supporting said conduit; and ratchet means mechanically and hydraulically coupled to said conduit and responsive to fluid pressure therewithin for applying torque to said conduit to revolve said wheel means.
Claim 13
Dependent Claim
49 words
In combination, an agricultural, irrigation wheel-line including a central, axial, water-flow conduit and wheel means keyingly mounted thereto for supporting said conduit; and ratchet means mechanically and hydraulically coupled to said conduit and responsive to fluid pressure therewithin for applying torque to said conduit to revolve said wheel means.
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |