US4219964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rope wick applicator
Assignee: United States Department of Agriculture
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Filing: 1978-12-13
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Granted: 1980-09-02
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Expires: 1998-12-13
Abstract
Abstract A new apparatus and system for the systematic application of liquid chemicals to plants is disclosed. A soft woven nylon rope wick is used to convey chemical solution from a reservoir by means of capillary action. The rope apparatus, which is physically supported, is leveled and positioned to selectively contact certain plants as the wick is moved across an agricultural field. Thus chemical solution is deposited selectively only on contact with the wick.
Inventors
- 👤 Jim E. Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:21
CPC Classifications
A; A01; A01M; A01M21/00; A01M21/04; A01M21/043
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A rope wick applicator to dispense liquid agricultural chemical solution upon physical contact with foliage and plants comprising: (a) reservoir containing agricultural chemical solution; (b) a rope wick with one end extending down into the reservoir and immersed into said chemical solution, and the other end sufficiently long enough to extend out of the reservoir for a predetermined distance necessary to contact the foliage and plants to be treated; (c) a rigid support boom supporting said rope wick, said rigid boom affixed to the reservoir, and comprising a vertical take off from said reservoir; a 90° ell at the end of the vertical take off and a horizontal slotted working section which will permit the wick to contact the foliage and plants to be treated; (d) a means for filling and refilling said reservoir with liquid agricultural chemical solution.
Claim 2
Dependent Claim
139 words
A rope wick applicator to dispense liquid agricultural chemical solution upon physical contact with foliage and plants comprising: (a) reservoir containing agricultural chemical solution; (b) a rope wick with one end extending down into the reservoir and immersed into said chemical solution, and the other end sufficiently long enough to extend out of the reservoir for a predetermined distance necessary to contact the foliage and plants to be treated; (c) a rigid support boom supporting said rope wick, said rigid boom affixed to the reservoir, and comprising a vertical take off from said reservoir; a 90° ell at the end of the vertical take off and a horizontal slotted working section which will permit the wick to contact the foliage and plants to be treated; (d) a means for filling and refilling said reservoir with liquid agricultural chemical solution.
Claim 3
Dependent Claim
35 words
The rope wick applicator of claim 1 wherein the 90° ell is threaded on both ends and therefore the boom and ell is rotatable in the horizontal plane as well as about its longitudinal axis.
Claim 4
Dependent Claim
18 words
The rope wick applicator of claim 2 constructed of materials which are compatible with the liquid agricultural solution.
Claim 5
Dependent Claim
16 words
The rope wick applicator of cliam 1 wherein the wick is of soft woven nylon rope.
Claim 6
Dependent Claim
16 words
The rope wick applicator of cliam 1 wherein the wick is of soft woven nylon rope.
Claim 7
Dependent Claim
29 words
The rope wick applicator of claim 1 wherein the slotted portion is slightly less than 1/2 of the circumference of the support boom which is constructed from 1" pipe.
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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |