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Improved pump for an airless-reservoir distributor

A technology for distributors and liquid storage tanks, applied in the field of improved pumps, can solve the problems of increasing production costs, increasing the complexity of distributors and assembly time, etc.

Inactive Publication Date: 2011-06-15
G·桑尼尔 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sealing limitations require the arrangement of numerous pieces / pieces to create a seal of the pump chamber
The huge number of segments increases production costs, but also increases the complexity and assembly time of the dispenser

Method used

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  • Improved pump for an airless-reservoir distributor
  • Improved pump for an airless-reservoir distributor
  • Improved pump for an airless-reservoir distributor

Examples

Experimental program
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Embodiment Construction

[0031] Now, the present invention will be described with reference to the above-mentioned drawings. Liquid products with medium to high viscosity, such as cosmetic products, gel or cream type products that need to be stored away from the air, are stored in a variable volume reservoir corresponding to the amount of product stored. US patent 5 152 434 describes such a reservoir, for example in a dispenser comprising a pump chamber fed by a reservoir located in a cylinder and delimited by a movable piston.

[0032] In a non-limiting manner, a movable piston (20) is located opposite the liquid supply opening (21) and slides in a cylinder (22), the cylinder (22) and the piston (20) delimiting the liquid reservoir (2). The reservoir (2) feeds the pump chamber (3) through a supply opening (21) with a check valve. The check valve prevents liquid product from flowing from the pump chamber (3) to the liquid storage tank (2), and enables liquid product to flow from the liquid storage ta...

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PUM

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Abstract

The invention relates to an improved pumping device which provides good sealing with a reduced number of components, owing in particular to the use of a valve including at least: a rigid retaining ring (52) clamped in a cylindrical portion (45) extending from a bellows (44); a flexible resilient diaphragm connected at the periphery threof to the retaining ring and including a domed part (51) curved towards the outside of the pumping chamber (3), said domed part having a slot (F) that divides the domed part into several portions; and a sleeve (534) extending from the ring outside the pumping chamber and coming into sealed contact around a hollow member (65) inside which an outlet duct (61) opens into a distribution port (611), the aforementioned portions of the domed part moving apart during expulsion and moving back together during suction.

Description

technical field [0001] The present invention relates to the field of dispensers for medium- or high-viscosity products, such as cosmetic products, gel or cream type products that need to be preserved against air. [0002] The invention more particularly relates to an improved pump, for example fed by a variable volume piston type tank. Background technique [0003] So-called "airless" variable volume reservoir dispensers currently exist that include a flexible diaphragm, such as an electric motor element for pumping. Patent EP 0738543 describes a dispenser, for example for viscous products, comprising an air-free reservoir for separating the product to be dispensed from the air. However, sealing limitations require the arrangement of numerous pieces / pieces to create a seal of the pump chamber. The huge number of segments increases production costs, but also increases the complexity and assembly time of the dispenser. Contents of the invention [0004] The object of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B11/02
CPCB05B11/007B05B11/0048B05B11/3035B05B11/0075B05B11/028B05B11/1035
Inventor G·桑尼尔F·波伊祖特
Owner G·桑尼尔