Fluid sprinkling – spraying – and diffusing – Including supply holder for material – To be mixed – dissolved or entrained in a flowing liquid...
Reexamination Certificate
2000-10-18
2001-07-17
Douglas, Lisa Ann (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
To be mixed, dissolved or entrained in a flowing liquid...
C239S312000, C239S526000
Reexamination Certificate
active
06260772
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a dispensing and rinsing gun for use with a liquid diluent and a liquid concentrate.
2. Description of the Prior Art
Dispensing and rinsing guns are commonly used in the food service industry, and are used for washing, rinsing, and sanitizing items such as processing equipment, floors, walls, and table tops.
Most dispensing and rinsing guns require the product to be switched on and off at a remote station, and they require that the liquid diluent/liquid concentrate solution run through the outlet hose. Previous wall mounted or remote mounted devices require a time delay to purge the first product out when switching to the second product to ensure there is no contamination of the outlet hose with the other product. With these devices, additional outlet hoses could be attached to the units in order to provide greater mobility of the devices. However, with the longer outlet hoses, the back pressure of the devices are increased and this reduces or eliminates the dispensing ability. Also, some previous devices do not provide a rinse mode for a water only dispensing mode and may require electricity to trigger an electric pump at the water and product reservoir.
Previous devices that use a single dispensing hose require two or three different dispensing nozzles for various products. These nozzles provide fan spray and foaming action, and they also provide a method of regulating the flow during the rinsing operation. With these devices, it is possible to lose the nozzles or utilize the wrong nozzle for the particular product.
The present invention allows water and product to be dispensed from one gun without purging the outlet hose before using different dispensing modes of the gun and without electricity. The gun may be turned on and off from the gun itself rather than at a remote location.
SUMMARY OF THE INVENTION
A preferred embodiment dispensing gun for dispensing water received from a water supply and for dispensing a product diluted in the dispensing gun with water received from the water supply includes a handle, a water inlet, a water outlet, and a hose receiving member. A hose member includes a first channel and a second channel. The hose receiving member is operatively connected to a first channel of a hose member, and the first channel is in fluid communication with the water inlet. An aspirator is operatively connected to the second channel of the hose member and is in fluid communication with the water outlet. The aspirator includes an outlet. A water supply supplies the gun with water via the first channel of the hose member, and a product supply supplies the gun with product via the second channel of the hose member, wherein the aspirator creates a use solution of product diluted with water for the water outlet. The use solution exits the outlet of the aspirator. A nozzle is operatively connected to the water outlet to dispense water from the water outlet. A first valve is in fluid communication with the water outlet and the nozzle, and a second valve is in fluid communication with the water outlet and the aspirator. The first valve controls the flow of water via the first channel and the second valve controls the flow of water via the first channel through the aspirator. The first valve allows water to flow from said water outlet through the nozzle, and the second valve allows water to flow from the water outlet into the aspirator and the use solution created therein to flow through the outlet of the aspirator.
In another preferred embodiment, an apparatus for dispensing liquid diluent and a liquid concentrate diluted with diluent includes a dispenser having an inlet and an outlet. A hose member includes a first channel and a second channel. The first channel interconnects a liquid diluent source to the inlet, wherein liquid diluent flows from the liquid diluent source into the inlet and out of the outlet. An aspirator is operatively connected to the outlet via the second channel. The aspirator includes a liquid diluent inlet a liquid concentrate inlet, and a dilute solution outlet. A control device operatively connected to the aspirator controls the flow of liquid diluent from a source of liquid diluent to the liquid diluent inlet. A nozzle is operatively connected to the outlet for dispensing liquid diluent from the outlet. A first valve is in fluid communication with the outlet and the nozzle and controls the flow of liquid diluent out of the nozzle. A second valve is in fluid communication with the outlet and the aspirator and controls the flow of dilute solution out of the dilute solution outlet.
In another preferred embodiment dispensing gun for dispensing water received from a water supply and for dispensing a product diluted in the dispensing gun with water received from the water supply, the dispensing gun includes a handle, a water inlet, a water outlet, and a hose receiving member operatively connected to a first channel of a hose member. The first channel of the hose member is in fluid communication with the water inlet. An aspirator is in fluid communication with the water outlet, and the aspirator includes an outlet. A water supply supplies the dispensing gun with water via the first channel of the hose member. A product supply is in fluid communication with the aspirator, wherein the aspirator creates a use solution of product diluted with water from the water outlet, and the use solution exits the outlet of the aspirator. A first nozzle is operatively connected to the water outlet to dispense water from the water outlet; and a first valve is in fluid communication with the water outlet and the first nozzle, and a second valve is in fluid communication with the water outlet and the aspirator. The first valve controls the flow of water via the first channel and the second valve controls the flow of water via the first channel through the aspirator. The first valve allows water to flow from the water outlet through the first nozzle and the second valve allows water to flow from the water outlet into the aspirator and the use solution created therein to flow through the outlet of the aspirator.
REFERENCES:
patent: 5405086 (1995-04-01), Kranzle
patent: 5419495 (1995-05-01), Berfield
patent: 6068204 (2000-05-01), Alexander
Hennemann, Jr. Thomas L.
Inchaustequi Roberto
Patrignani Vincent C.
Sowle Eddie D.
Douglas Lisa Ann
Ecolab Inc.
Mau & Krull, P.A.
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