US4377920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wick applicator for herbicides
Assignee: BOWMAN MANUFACTURING CO INC A CORP OF AR
•
Filing: 1981-02-19
•
Granted: 1983-03-29
•
Expires: 2001-02-19
Abstract
Abstract A wick applicator for herbicide which includes first and second horizontally elongated conduits. The first conduit is elevated above the second conduit and a plurality of wicks extend between the conduits and are in fluid communication with the interior of each. Herbicide is provided to the interior of the first conduit while a vacuum is applied to the interior of the second conduit to withdraw herbicide therefrom which is directed thereto by the wicks. A pump is utilized for the purpose and the same recirculates the herbicide back to the first conduit to conserve on herbicide use and to provide a fine degree of control over the flow rate of herbicide through the wicks.
Inventors
- 👤 David N. Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
A; A01; A01M; A01M21/00; A01M21/04; A01M21/043
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
117 words
A wick applicator for herbicide or the like comprising: first and second horizontally elongated conduits, said first conduit being elevated above said second conduit; wick means extending between said conduits and being in fluid communication with the interior of each said conduit, said wick means being disposed so as to contact vegetation when said applicator is advanced across a planted area below the tops of vegatation growing in such area; means whereby a herbicide or the like is provided to the interior of said first conduit; and means for withdrawing herbicide or the like from said second conduit; whereby herbicide or the like will flow from said first conduit through said wick means to said second conduit.
Claim 2
Dependent Claim
117 words
A wick applicator for herbicide or the like comprising: first and second horizontally elongated conduits, said first conduit being elevated above said second conduit; wick means extending between said conduits and being in fluid communication with the interior of each said conduit, said wick means being disposed so as to contact vegetation when said applicator is advanced across a planted area below the tops of vegatation growing in such area; means whereby a herbicide or the like is provided to the interior of said first conduit; and means for withdrawing herbicide or the like from said second conduit; whereby herbicide or the like will flow from said first conduit through said wick means to said second conduit.
Claim 3
Dependent Claim
23 words
The wick applicator of claim 1 wherein said withdrawing means comprises a pump having an inlet in fluid communication with said second conduit.
Claim 4
Dependent Claim
39 words
The wick applicator of claim 2 wherein said pump has an outlet in fluid communication with the interior of said first conduit so that herbicide or the like withdrawn from said second conduit is recirculated to said first conduit.
Claim 5
Dependent Claim
25 words
The wick applicator of claim 3 wherein said pump pressurizes said first conduit; and further including means for regulating the pressure in said first conduit.
Claim 6
Dependent Claim
15 words
The wick applicator of claim 1 wherein said wick means comprise a plurality of ropes.
Claim 7
Dependent Claim
38 words
The wick applicator of claim 1 further including a frame mounting said first and second conduits, and further including means for controlling the flow of herbicide from said first conduit through said wick means to said second conduit.
Claim 8
Dependent Claim
125 words
A wick applicator for herbicides or the like comprising: first and second horizontally elongated conduits; wick means extending between said conduits and being in fluid communication with the interior of each said conduit, said wick means being disposed so as to contact vegetation when said applicator is advanced across a planted area below the tops of vegetation growing in such area; means whereby a herbicide or the like is provided to the interior of said first conduit; and means for applying a vacuum to the interior of said second conduit; whereby herbicide or the like provided by said first conduit to said wick means in excess of that required to saturate the wick means to a desired degree will be drawn into said second conduit.
Claim 9
Dependent Claim
125 words
A wick applicator for herbicides or the like comprising: first and second horizontally elongated conduits; wick means extending between said conduits and being in fluid communication with the interior of each said conduit, said wick means being disposed so as to contact vegetation when said applicator is advanced across a planted area below the tops of vegetation growing in such area; means whereby a herbicide or the like is provided to the interior of said first conduit; and means for applying a vacuum to the interior of said second conduit; whereby herbicide or the like provided by said first conduit to said wick means in excess of that required to saturate the wick means to a desired degree will be drawn into said second conduit.
Claim 10
Dependent Claim
25 words
The wick applicator of claim 7 wherein said vacuum applying means comprises means for recirculating herbicide drawn into said second conduit to said first conduit.
Claim 11
Dependent Claim
110 words
A wick applicator for herbicides or the like comprising: a horizontally elongated frame including a manifold; wick means mounted on said frame and being in fluid communication with said manifold, said wick means being disposed so as to contact vegetation when said applicator is advanced across a planted area below the tops of vegetation growing in such area; means for providing a herbicide or the like to said wick means so that vegetation contacted by said wick means will have herbicide or the like applied thereto; and means associated with said manifold for causing excess herbicide or the like on said wick means to enter said manifold for collection therein.
Claim 12
Dependent Claim
110 words
A wick applicator for herbicides or the like comprising: a horizontally elongated frame including a manifold; wick means mounted on said frame and being in fluid communication with said manifold, said wick means being disposed so as to contact vegetation when said applicator is advanced across a planted area below the tops of vegetation growing in such area; means for providing a herbicide or the like to said wick means so that vegetation contacted by said wick means will have herbicide or the like applied thereto; and means associated with said manifold for causing excess herbicide or the like on said wick means to enter said manifold for collection therein.
Claim 13
Dependent Claim
63 words
The wick applicator of claim 9 wherein said frame maintains at least a portion of said wick means at an elevation above said manifold and wherein said causing means comprises a pump having an inlet in fluid communication with said manifold and an outlet connected to said providing means to thereby cause recirculation of excess herbicide or the like to minimize consumption thereof.
References Cited (Backward Citations)
US4168798A
Cited
US4187638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |