Dispensing – With material treatment or conditioning means
Patent
1998-09-29
2000-08-01
Huson, Gregory L.
Dispensing
With material treatment or conditioning means
2223216, 222380, B67D 558, G01F 1130
Patent
active
060953764
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an antibacterial spray device for spraying a liquid.
2. Description of the Related Art
A liquid is contained in a receptacle and spraying thereof is generally performed using a conventional device comprising, in particular, an endpiece designed to cover an outlet tube of a Pump Which IS mounted on the receptacle by a collar.
Such a device is described, for example, in U.S. Pat. No. 4,830,284 where the endpiece includes an internal duct which extends from the outlet tube to an end cavity and is surrounded coaxially by a tapering cylindrical outside wall, which is attached at its bottom portion to a bearing shoulder for operating the pump. The end cavity is provided with an ejection orifice and houses a valve.
In such devices, the liquid is protected against bacteria only by the valves of tile pump. Where appropriate, further protection is provided by enclosing the liquid in a deformable pouch which is bonded to the pump or by using a receptacle of variable volume which is provided with a movable base.
However, these protection means are not sufficiently effective to keep tile packaging sterile or to prevent the liquid from becoming contaminated.
Another bacterial protection technique consists of incorporating a chemical preservative in the liquid itself.
However, such preservatives result in a change in the quality of the liquid, which is especially disadvantageous for pharmaceuticals and cosmetics where undesirable side effects for the user may be generated.
SUMMARY OF THE INVENTION
The object of the present Invention is to resolve the abovementioned technical problems by combing mechanical sealing means with an antibacterial agent.
According to the invention, this object is achieved by a spray device for spraying a liquid contained in a receptacle, the device comprising an endpiece designed to cover an outlet tube of a pump which is mounted on the receptacle by a collar. The endpiece includes an internal duct which extends from the outlet tube to an end cavity and is surrounded coaxially by a tapering cylindrical outside wall, which is attached at its bottom portion to a bearing shoulder for operating the pump. The end cavity is provided with an ejection orifice and houses a valve. The internal duct is of annular section, about a solid axial rod. The end cavity is closed and is defined inside the endpiece by a front wall thereof, which is pierced by the ejection orifice, and by a downstream longitudinal end of the axial rod. All component parts that come into contact with the liquid, including the endpiece, are made, at least in part, of a plastics material containing between 0.2% and 2% by weight of a bactericidal agent which acts solely by coming into contact with the liquid but without being released into the liquid.
In a particular embodiment, the bactericidal agent is a compound containing silver in ionic form.
According to an advantageous characteristic, the shoulder of the endpiece is extended by a bottom cylindrical sleeve which ensures that the endpiece is axially guided inside a neck of the receptacle and comes into abutment with the collar of the pump.
The shoulder preferably has a span which is greater than an outside diameter of the neck of the receptacle. As such, the shoulder preferably extends radially outwardly in at least two directions beyond the outside diameter.
According to another characteristic, the valve is removable and is constituted by a solid cylindrical body which is provided at its base with an elastically-deformable peripheral lip which bears against internal side walls of the cavity and is oriented towards the ejection orifice.
In a first variant, the internal duct is central and axial.
In such case, the end cavity is open and is defined inside the endpiece by the annular rim of the internal duct.
The valve is thus held in the end cavity by a nozzle which closes a mouth of the end cavity, at least in part.
The nozzle preferably includes a front face, which is pierced by a central eje
REFERENCES:
patent: 4437592 (1984-03-01), Bon
patent: 4830284 (1989-05-01), Maerte
patent: 5195665 (1993-03-01), Lina
patent: 5360145 (1994-11-01), Gueret
patent: 5490938 (1996-02-01), Sawan et al.
Bougamont Jean-Louis
Hennemann Pascal
Prost Frederic
Huson Gregory L.
Quinalty Keats
Sofab
LandOfFree
Antibacterial device for spraying a liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antibacterial device for spraying a liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antibacterial device for spraying a liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-655342