US4997129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low cost applicator and method of use
Assignee: Individual
•
Filing: 1990-01-19
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Granted: 1991-03-05
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Expires: 2010-01-19
Abstract
Abstract A low cost sprayer and method of using the sprayer is disclosed. The sprayer is formed with a length of flexible tubing having an inlet end and a tubing outlet end. A nozzle is secured to the outlet end of the hose in a manner to provide a predetermined flow pattern upon rotation of the tubing and nozzle. In use, the inlet end of the tubing is placed within an agricultural chemical containing tank and a predetermined length of the remainder of the tubing is rotated by a worker as he walks through the area to be sprayed. By varying the radius of the rotating portion of the tubing and by varying the type of spray nozzle employed, the swath width and the droplet size of liquid chemical application can be closely controlled. Granular agricultural chemicals can be applied by rotating a granular material nozzle about its axis while rotating the tubing in a vertical plane.
Inventors
- 👤 John E. Waldrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/08; B05B3/00; B05B3/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
172 words
An agricultural chemical sprayer comprising a portable agricultural chemical tank defining a chemical storing interior, the tank interior being maintained at atmospheric pressure, the tank having no pump associated therewith, a length of flexible tubing having an intake end inserted into the tank, the tubing intake end receiving portions of the chemical from the tank therethrough, the tubing having an outlet end to discharge the said portions of the chemical therethrough, the tubing having rotatable and non-rotatable portions, the tubing inlet end being non-rotatable relative to the tank and having no rotative movement relative to the tank, the tubing outlet end being rotative relative to the tank in a plane, and a nozzle affixed to the tubing outlet end, the nozzle having an inlet and an outlet which are coaxial with the tubing outlet end such that the nozzle is rotated on a radius from the tube, whereby when the tubing outlet end is rotated the agricultural chemical is discharged in a desired spray pattern by centrifugal force developed along said radius.
Claim 2
Dependent Claim
172 words
An agricultural chemical sprayer comprising a portable agricultural chemical tank defining a chemical storing interior, the tank interior being maintained at atmospheric pressure, the tank having no pump associated therewith, a length of flexible tubing having an intake end inserted into the tank, the tubing intake end receiving portions of the chemical from the tank therethrough, the tubing having an outlet end to discharge the said portions of the chemical therethrough, the tubing having rotatable and non-rotatable portions, the tubing inlet end being non-rotatable relative to the tank and having no rotative movement relative to the tank, the tubing outlet end being rotative relative to the tank in a plane, and a nozzle affixed to the tubing outlet end, the nozzle having an inlet and an outlet which are coaxial with the tubing outlet end such that the nozzle is rotated on a radius from the tube, whereby when the tubing outlet end is rotated the agricultural chemical is discharged in a desired spray pattern by centrifugal force developed along said radius.
Claim 3
Dependent Claim
23 words
The sprayer of claim 1 and a shuttle valve comprising a spring interposed between the outlet end of the tubing and the nozzle.
Claim 4
Dependent Claim
36 words
The sprayer of claim 1 and a portable reel secured to the tank, a portion of the tubing being wound about the reel to form a coil, the reel being moved when the tank is moved.
Claim 5
Independent Claim
125 words
The method of spraying while using a low cost sprayer of the type comprising a length of flexible hose, the hose having an inlet and an outlet and a nozzle secured to the hose outlet comprising placing the hose inlet end into an agricultural chemical containing tank; elevating a portion of the hose and the nozzle above the tank; rotating the portion of the hose and the nozzle through an arc of three hundred and sixty degrees and causing agricultural chemical flow through the nozzle without using a pump; moving the tank while rotating the portion of the hose and the nozzle; and, rotating the nozzle at uniform velocity through the arc of rotation and spraying the agricultural chemicals from the tank through the nozzle.
Claim 6
Independent Claim
125 words
The method of spraying while using a low cost sprayer of the type comprising a length of flexible hose, the hose having an inlet and an outlet and a nozzle secured to the hose outlet comprising placing the hose inlet end into an agricultural chemical containing tank; elevating a portion of the hose and the nozzle above the tank; rotating the portion of the hose and the nozzle through an arc of three hundred and sixty degrees and causing agricultural chemical flow through the nozzle without using a pump; moving the tank while rotating the portion of the hose and the nozzle; and, rotating the nozzle at uniform velocity through the arc of rotation and spraying the agricultural chemicals from the tank through the nozzle.
Claim 7
Dependent Claim
13 words
The method of claim 4 wherein the rotating is in a vertical plane.
Claim 8
Dependent Claim
13 words
The method of claim 4 wherein the spraying occurs without utilizing a pump.
Claim 9
Dependent Claim
167 words
An agricultural chemical sprayer comprising a portable agricultural chemical tank defining a chemical storing interior, the tank interior being maintained at atmospheric pressure at all times, the tank having no pump associated therewith, a length of flexible tubing having an intake end, the intake end being inserted into the tank, the tubing intake end receiving portions of the chemical from the tank therethrough, the tubing having an outlet end to discharge the said portions of the chemical therethrough, the tubing having rotatable and non-rotatable portions, the tubing inlet end being non-rotatable relative to the tank, the tubing inlet end having no rotative movement relative to the tank, the tubing outlet end being rotative relative to the tank in a plane, a nozzle affixed to the tubing outlet end, the nozzle being rotated when the tubing outlet end is rotated to discharge the agricultural chemical in a desired spray pattern, and a shuttle valve comprising a spring interposed between the outlet end of the tubing and the nozzle.
Claim 10
Dependent Claim
167 words
An agricultural chemical sprayer comprising a portable agricultural chemical tank defining a chemical storing interior, the tank interior being maintained at atmospheric pressure at all times, the tank having no pump associated therewith, a length of flexible tubing having an intake end, the intake end being inserted into the tank, the tubing intake end receiving portions of the chemical from the tank therethrough, the tubing having an outlet end to discharge the said portions of the chemical therethrough, the tubing having rotatable and non-rotatable portions, the tubing inlet end being non-rotatable relative to the tank, the tubing inlet end having no rotative movement relative to the tank, the tubing outlet end being rotative relative to the tank in a plane, a nozzle affixed to the tubing outlet end, the nozzle being rotated when the tubing outlet end is rotated to discharge the agricultural chemical in a desired spray pattern, and a shuttle valve comprising a spring interposed between the outlet end of the tubing and the nozzle.
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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |