Fluid sprinkling – spraying – and diffusing – Including supply holder for material – To be mixed – dissolved or entrained in a flowing liquid...
Reexamination Certificate
2000-05-23
2001-05-15
Scherbel, David A. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
To be mixed, dissolved or entrained in a flowing liquid...
C239S317000, C239S379000, C137S268000
Reexamination Certificate
active
06230987
ABSTRACT:
BACKGROUND—FIELD OF THE INVENTION
This invention relates generally to applicators for allowing a predetermined flow of a fluid for dissolving soluble substances and distributing mixtures to the fluid. The mixtures are formed inside the applicators by mixing the fluid with the soluble substances. The soluble substances can be in types of solid, solution or fluid. The most advantageous fields for using this invention are water sprinkler systems that provide nutrients for lawns, gardens or vegetable fields. Said applicators can be installed to existing Tee pipe fittings of pipelines of water sprinkler systems. The nutrients such as fertilizers, insecticides, or chemical compounds are placed inside the applicators. Their mixtures will be diluted into downstream flows of water in the Tee pipe fittings. It is to be understood that the scope of the invention is not limited to these fields presented hereinafter.
DESCRIPTION OF PRIOR ARTS
The following U.S patents have the most pertinent prior arts: Pasley, U.S. Pat. No. 3,833,177, Gacer, U.S. Pat. No. 4,385,034, and Anderson, U.S. Pat. No. 5,199,645. These prior art devices are well known in lawn sprinkler systems for automatically dissolving and distributing fertilizers or the likes to sprinkler heads. Mr. Pasley shows a water disseminating device which is connected to a Tee pipe fitting of a water system. The device has a control valve for adjusting water flow in the Tee pipe fitting into and out of a pair of dissimilar passages which are individually interconnected to his container and the water system. Mr. Gacer shows a base having a flow channel and a chamber secured to the base. Along the flow channel there is an inlet port having a dome member. The dome member has diffusers for diffusing water into the chamber. An outlet port is extended between the flow channel and the chamber for dispensing the resulting mixture to a downstream flow of water in the flow channel. Flow out of the resulting mixtures formed inside Pasley's and Gacer's devices is extremely restricted because their outlet ports are disposed flat to their flow channels. That will cause unpredictable amounts of the resulting mixtures for distribution to their water systems.
Mr. Anderson shows a housing with a removable canister. The removable canister has a plurality of regularly spaced elongated slots to allow water passage in and out of the interior portion of the canister. The water mixes with and dissolves chemical compounds and continues out of the other slots. His device has the same problem as Pasley's and Gacer's devices. That is unpredictable amounts of a resulting mixture for distribution to his water system. The above problem is solved by the new invention. The invention can precisely provide predetermined amounts of resulting mixtures to any flowing fluid system. Furthermore, the invention can precisely provide predetermined amounts of fluids in its applicator for dissolving the chemical compounds. None of the above prior arts taken in combination anticipates or makes obvious the invention claimed herein.
BACKGROUND OF THE INVENTION
There are two main problems encountered in conjunction with the above prior art devices. First, unpredictable amounts of water for dissolving chemical compounds. Second, unpredictable amounts of resulting mixtures for distribution to water sprinkler systems. That will cause detrimental effects for lawns or vegetable fields. The invention will solve these two problems. The invention is an applicator connected to a Tee pipe fitting of a water sprinkler system. Each applicator has a total predetermined inlet area and a total predetermined outlet area for the water in and out of said applicator, respectively. The total predetermined inlet area is equal to a predetermined percent of a cross-sectional flow area of the horizontal flow channel of the Tee pipe fitting. The total predetermined outlet area is equal to a predetermined percent of the cross-sectional flow area of the horizontal flow channel of the Tee pipe fitting. The total predetermined inlet area can be different with the total predetermined outlet area.
Furthermore, some above prior art devices require maintenance and space for storage. Some of them are complicated in structure, expensive to build, and inconvenient to install to existing pipe fittings of sprinkler systems. The present invention helps the user solve those problems by installing it directly to any existing Tee pipe fitting of the sprinkler systems. It will be flush with a ground surface like pop-up sprinklers. It can be installed at strategically spaced positions of preexisting pop-up sprinklers and will allow the water to mix with and dissolve fertilizers or the likes. The invention can apply to any type or form of any soluble substance.
OBJECTS AND ADVANTAGES OF THE INVENTION
Accordingly, I claim the following as my objects and advantages of the invention: to provide an applicator which permits precisely a predetermined flow of water into the applicator for dissolving soluble substances; to provide an applicator which distributes precisely a predetermined flow of a resulting mixture into pipelines of water sprinkler systems; to provide such an applicator will save time and labor for dissolving and distribution of fertilizers or the likes over large or small ground areas; to provide an applicator which is simple and has no moving internal parts; to provide an applicator which requires no maintenance at all; to provide an applicator which is low cost and easy to install to any existing position of pop-up sprinklers; to provide an applicator which can be installed flush with the ground. Further objectives and advantages of the invention will become apparent from a consideration of the ensuing description and the accompanying drawings.
REFERENCES:
patent: 1734164 (1929-11-01), Faber
patent: 1769428 (1930-07-01), Gatchet
patent: 3421738 (1969-01-01), Dulger
patent: 3833177 (1974-09-01), Pasley et al.
patent: 3901262 (1975-08-01), Gutkowski
patent: 4331174 (1982-05-01), King, Sr.
patent: 4385034 (1983-05-01), Gacer
patent: 4662387 (1987-05-01), King, Sr.
patent: 4873727 (1989-10-01), Homan
patent: 5199645 (1993-04-01), Anderson et al.
patent: 5915622 (1999-06-01), Foote
Nguyen Dinh Q.
Scherbel David A.
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