Patent US4491254A successfully refreshed from Google Patents.
US4491254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid chemical applicator
Assignee: OM Scott and Sons Co
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Filing: 1982-09-22
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Granted: 1985-01-01
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Expires: 2002-09-22
Abstract
Abstract A liquid applicator for dispensing a chemical, such as a herbicide, in dilute aqueous form. The applicator has a first container adapted to contain a concentrated chemical and a second container adapted to receive chemical from the first container prediluted with water. A valve controls the flow of chemical and water from the first to the second container and controls the flow of water to an aspirator which further dilutes and discharges the chemical.
Inventors
- 👤 Alan K. Viets
- 👤 James D. Amerine
- 👤 Henry M. Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:30
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/24; B05B7/2402; B05B7/244; B05B7/2443; B05B7/2445
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
158 words
A liquid applicator for dispensing a chemical in dilute aqueous form comprising an applicator body containing a first passageway therethrough for the passage of water from a water source to the exterior of the applicator, a first container connected with said applicator body adapted to contain a chemical therein, a second container mounted vertically beneath said first container on said applicator body and adapted to contain a chemical diluted with water, said applicator body containing a second passageway for passage of chemical and water by gravity from said first container to said second container, valve means intersecting said first passageway adapted to divert water from said first passageway into said first container to flush chemical from said first container into said second container and predilute said chemical with water, said first passageway containing an aspirator therein for withdrawal and further dilution of prediluted chemical from the second container and for discharge of said diluted chemical from the applicator.
Claim 2
Dependent Claim
158 words
A liquid applicator for dispensing a chemical in dilute aqueous form comprising an applicator body containing a first passageway therethrough for the passage of water from a water source to the exterior of the applicator, a first container connected with said applicator body adapted to contain a chemical therein, a second container mounted vertically beneath said first container on said applicator body and adapted to contain a chemical diluted with water, said applicator body containing a second passageway for passage of chemical and water by gravity from said first container to said second container, valve means intersecting said first passageway adapted to divert water from said first passageway into said first container to flush chemical from said first container into said second container and predilute said chemical with water, said first passageway containing an aspirator therein for withdrawal and further dilution of prediluted chemical from the second container and for discharge of said diluted chemical from the applicator.
Claim 3
Dependent Claim
23 words
The applicator of claim 1 in which the first container contains a rupturable seal across the opening thereof for containing the chemical therein.
Claim 4
Dependent Claim
32 words
The applicator of claim 2 in which said valve means includes a projecting tubular member through which water is diverted from said water source into said first container to flush chemical therefrom.
Claim 5
Dependent Claim
54 words
The applicator of claim 3 in which said valve means is a rotatable member having a first position of rotation in which water is diverted through said tubular member into said first container and a second position of rotation in which water passes through said aspirator to discharge diluted chemical from the second container.
Claim 6
Dependent Claim
23 words
The applicator of claim 3 in which said projecting tubular member contains a sharp extremity thereof which is adapted to rupture said seal.
Claim 7
Dependent Claim
22 words
The applicator of claim 3 having means in combination with said applicator body to control the passage of water into said applicator.
Claim 8
Dependent Claim
27 words
The applicator of claim 4 in which said valve means is mounted for rotation within said applicator body at right angles to the first and second passageways.
Claim 9
Dependent Claim
36 words
The applicator of claim 4 in which the tubular member at its non-projecting end is adapted for alignment, in said first position of rotation of said valve, with the water entrance end of said first passageway.
Claim 10
Dependent Claim
31 words
The applicator of claim 4 in which said valve means contains a hole therethrough adapted for alignment at both ends thereof, in said second position of rotation, with said first passageway.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |