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Diaphragm pump comprising on at least a portion of its periphery preferred deformation zone and a receptacle fitted therewith

a diaphragm pump and preferred deformation technology, applied in the field of diaphragm pumps, can solve the problems of pump priming difficulties, non-uniform quantity of substance, known pump not providing complete satisfaction, etc., and achieve the effect of improving the reliability of operation

Inactive Publication Date: 2008-04-08
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The improved pump design prevents jamming and ensures consistent, reliable dispensing of substances by providing a strong return force and efficient substance flow, addressing the issues of non-uniform dispensing and priming difficulties.

Problems solved by technology

Nevertheless, that known pump does not provide complete satisfaction, and the Applicant company has observed that the pushbutton tends to jam and / or to dispense non-uniform quantities of substance.
In addition, such a pump suffers from difficulties in priming.

Method used

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  • Diaphragm pump comprising on at least a portion of its periphery preferred deformation zone and a receptacle fitted therewith
  • Diaphragm pump comprising on at least a portion of its periphery preferred deformation zone and a receptacle fitted therewith
  • Diaphragm pump comprising on at least a portion of its periphery preferred deformation zone and a receptacle fitted therewith

Examples

Experimental program
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Embodiment Construction

[0061]FIG. 1 shows a receptacle 1 comprising a tank forming body 2 of which only the top end is shown in the drawing, defining a neck 3 on which a support 4 is snap-fastened.

[0062]The support 4 guides a pushbutton 5 in sliding along an axis X, and it serves to mount a removable protective cap 6 Covering the pushbutton 5 prior to first use.

[0063]The support 4 has a sealing skirt 7 bearing in leakproof manner against the inside surface of the neck 3.

[0064]The sealing skirt 7 is extended radially, firstly outwards by fixing tabs 8 snap-fastened on an annular rim 9 of the neck 3, and secondly inwards in the form of a stepped wall 10 defining an endpiece 12 for connecting a dip tube 13, shown in part in the drawing.

[0065]An outer skirt 15 and a guide skirt 16 are integrally formed together with the sealing skirt 7, the fixing tabs 8, and the stepped wall 10 by molding a plastics material.

[0066]The outer skirt 15 extends around the neck 3 of the receptacle and presents a shoulder 17 on wh...

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Abstract

The invention provides a pump of type comprising a moving member mounted to move relative to a support, the moving member having a central duct into which the substance to be dispensed penetrates via at least one opening, the support co-operating with the moving member to define a variable volume pump chamber around said central duct, the pump also having a diaphragm having a central portion in the form of a sleeve that is open at its top end and closed at its bottom end, said central duct being inserted in said central portion, the diaphragm being organized in such a manlier as to isolate the opening(s) of the pump chamber when the volume of the pump chamber increases and the substance is sucked into it. The bottom portion of the central portion of the diaphragm presents, at least over a sector of its periphery, a preferred deformation zone.

Description

[0001]The present invention relates to a pump and to a receptacle containing a liquid, for example a cosmetic cream, and fitted with such a pump.BACKGROUND OF THE INVENTION[0002]French patent 2 728 809 discloses a pump comprising a pushbutton displaceably mounted on a support which is secured to the receptacle containing the substance to be dispensed, the pushbutton having a circularly cylindrical central duct provided with radial openings at its bottom end, the support defining an annular pump chamber of variable volume around said duct. A diaphragm made of elastomer is mounted on the support. The diaphragm has a circularly symmetrical central portion in the form of a sleeve that is open at its top end and closed at its bottom end. The central duct of tile pushbutton is inserted in the diaphragm until it bears against the end wall of the sleeve.[0003]The diaphragm thus constitutes a resilient return member enabling the pushbutton to be returned to its initial position after a quant...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B65D37/00A45D34/04B05B11/00B65D47/34B65D83/76F04B9/14
CPCB05B11/1004B05B11/1064B05B11/1076B05B11/1001
Inventor BONNINGUE, PHILIPPE
Owner LOREAL SA