Dispenser adapted for combined continuous and instant operation

Details Dispenser adapted for combined continuous and instant operation Dispenser adapted for combined continuous and instant operation

1993-09-16

1994-11-15

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Slow diffusers

With wick or absorbent means removing liquid from holder

239 34, 239145, 239289, 239327, 239436, 222187, B05B 904, B05B 1104, A45D 3402

Patent

active

053640276

DESCRIPTION:

BRIEF SUMMARY
This invention relates to a dispenser adapted for combined continuous and instant operation, i.e., a dispenser which continuously releases the active substance through absorption and evaporation, and, if so desired, can instantly release a large charge of the active substance.
Well known are dispensers that operate continuously through evaporation, which comprise a porous, absorbent medium and an evaporation surface, and are filled with a solution of an active substance, such as insecticide or a medicinal substance for medical applications, or with perfume or deodorant for cosmetic applications or use as an air-freshener.
Also known are spray dispensers adapted for instant operation, for instance a deformable squeeze-bottle having an immersion tube channel arranged therein, the liquid being sprayed by generating a pressure in the bottle and discharging liquid via the immersion tube. Prior to discharge, the liquid is mixed with air that is present in the bottle above the liquid. Aerosols are a variant of such dispensers.
The object of this invention is to provide a dispenser which combines the two above-described principles of operation and can be manufactured simply and economically.
This object is realized by providing a dispenser comprising a container which is to be partly filled with liquid active substance and has a wall that is at least locally resiliently deformable, with two immersion tube channels extending from a point adjacent the bottom of the container up to the top of the container, one channel terminating in a spray nozzle and the other channel containing a wick or similar absorbent material and terminating in an evaporation space that communicates with the atmosphere.
Active-substance containing liquid will be absorbed continuously via the wick and enabled to evaporate in the evaporation space communicating with the atmosphere. By squeezing the container, a large quantity of liquid can instantly be discharged via the spray nozzle.
Simple and economical manufacture can be realized by forming the spray nozzle, the evaporation space and at lease one of the immersion tube channels as a single moulding which can be snapped onto the mouth of the container so as to seal it.
In further elaboration of the invention, the spray nozzle and the evaporation space can be closed by one common cover so as to prevent evaporation before the dispenser pun into use.
Furthermore, in further elaboration of the invention, the spray nozzle may be formed substantially concentrically within the evaporation space and the wick may comprise an elongate portion extending in the corresponding immersion tube channel and a portion extending transverse thereto, extending around the spray nozzle in the evaporation space.
Such a, for instance T-shaped, wick can have its leg arranged in the corresponding immersion tube channel while the transverse portion is arranged around the spray nozzle in the evaporation space.
To prevent liquid being forced into the immersion tube channel containing the wick and thence into the evaporation space during the momentary generation of pressure in the container, the dimensions of the wick and those of the immersion tube channel containing the wick can be mutually adjusted in such a manner that the liquid cannot pass the wick in the immersion tube.
Another way of preventing the liquid from flowing upward through the immersion tube channel during the momentary generation of pressure, is to arrange a non-return valve element in the lower part of the immersion tube, this valve element being formed, for instance, by a ball that is mounted with radial clearance in the lower part of the immersion tube channel and confined with axial clearance by two constrictions provided in the channel, the upper constriction forming a valve seat for the ball, so that the channel is shut off when the pressure in the container rises, while any excess liquid in the evaporation space can flow back into the container. To clarify the invention, one embodiment will now be discussed, by way of example, with reference to the

REFERENCES:
patent: 897131 (1908-08-01), Owen
patent: 960008 (1910-05-01), Evans et al.
patent: 2520368 (1950-08-01), Landau
patent: 3972473 (1976-08-01), Harrison
patent: 4024992 (1977-05-01), Schmid
patent: 4084732 (1978-04-01), Dearling
patent: 4306679 (1981-12-01), Dusek et al.
patent: 4341348 (1982-07-01), Dearling
patent: 4726519 (1988-02-01), Muoio
patent: 4809914 (1989-03-01), Goncalves

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