Single valve ready to use hose end sprayer
a sprayer and single valve technology, applied in the direction of valve arrangements, multiple way valves, engine components, etc., can solve the problems of extremely hazardous chemicals to the consumer end user and the general environment, and achieve the effect of convenient manufacture and assembly
Inactive Publication Date: 2005-12-29
MEADWESTVACO CALMAR INC
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The solution provides a safe, reliable, and cost-effective aspiration-type chemical sprayer that minimizes component count and manufacturing complexity, ensuring efficient chemical dispensing while reducing environmental impact and user risk.
Problems solved by technology
Method used
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[0034] A sprayer head assembly 10 according a preferred embodiment of the present invention is illustrated in FIGS. 1-12B. As shown in FIG. 1, the sprayer head assembly 10 is connected to a chemical container 12. The sprayer head assembly 10 includes a sprayer head 14, a container connection portion 16, a supply fluid connection portion 18, and a rotatable control valve 20. The sprayer head assembly 10 may be made of any suitable material that is resistant to and compatible with the chemical fluid to be sprayed. However, a flexible plastic material, such as polypropylene, is preferred because it is resilient yet durable.
[0035] With reference to FIGS. 1 and 6, the valve 20 is moveably positioned in a cylindrical bore 22 that is formed in the sprayer head 14 of the sprayer head assembly 10. The valve includes a gripping area or handle 24 that is mounted onto a valve cap 21. An operator opens and closes the valve 20 by twisting the handle 24. The valve 20, bore 22, and handle 24 are i...
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The present invention relates to a chemical sprayer that includes a sprayer head assembly and a container. The container defines a cavity for storing a chemical to be sprayed. The sprayer head assembly includes a chemical passage, a carrier fluid passage, a vent passage, a valve chamber and a valve. The chemical passage is communication with the cavity. The carrier fluid passage is in communication with a carrier fluid source. Both the carrier fluid and chemical passages are in communication with the valve chamber. The valve is moveably positioned within the valve chamber and defines at least partially a first passage and a second passage. The first passage is configured so as to be in communication with the chemical passage when the valve is in an open position. The second passage is configured so as to be in communication with the carrier fluid passage when the valve is in the open position. The first and second passages are also configured so as to not be in communication with the chemical and carrier fluid passages when said valve is in a closed position. The valve also includes one or more seal portions positioned on the valve so as to block both the chemical and the carrier fluid passages when said valve is in the closed position. The sealing portions also preferably blocks a vent passage when the valve in the closed position. The second passage also preferably forms at least in part an outlet of the sprayer head assembly. A suction generating surface is also preferably defined by the valve.
Description
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to chemical dispensing sprayers and, in particular, to aspiration-type sprayers that use a relatively large amount of carrier fluid for dispensing a relatively small amount of a chemical solution. [0003] 2. Description of the Related Art [0004] Every year consumers apply thousands of gallons of chemicals such as fertilizers or pesticides to plants, lawns, flowers, vegetable gardens and other organic type vegetation. Typically, such chemicals are sold in plastic containers in a concentrated form. While in this concentrated form, the chemical is extremely hazardous to the consumer end user and the environment in general. Accordingly, the container typically includes an aspiration-type sprayer head assembly. An aspiration-type sprayer uses a relatively large amount of carrier fluid, such as water, to withdraw, dilute and dispense a relatively small amount of chemical from the container. To...
Claims
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IPC IPC(8): B05B7/12B05B7/24B05B7/30F16K5/04F16K5/12
CPCB05B7/1209B05B7/2443F16K11/0853F16K5/12F16K5/0407
Inventor SHANKLIN, DONALDENGLHARD, RONALD F.
Owner MEADWESTVACO CALMAR INC