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Distributing device

A technology of a dispensing device and a mechanical device, applied in the field of manual pumps, can solve the problems of high processing, manufacturing and assembly costs

Inactive Publication Date: 2008-07-16
WORDON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, known pumps typically comprise 10-15 parts, with consequent high associated tooling, fabrication and assembly costs, but often have mediocre operational performance characteristics

Method used

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  • Distributing device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Figure 1 shows a pump 2 in an idle position ready for use according to a first aspect of the invention. The pump assembly 2 can be mounted on the threaded neck of a bottle (not shown) by means of a threaded retaining ring 4 . The bottle contains the liquid which is an aqueous, non-sticky cleaning liquid.

[0039] The pump base 6 is a single plastic molding with:

[0040] an inner vertical cylinder 8 which tightly accommodates the upper end of the dip tube 10;

[0041] an outer vertical cylinder 12 having a flared lower end 14 which snaps onto the neck of the bottle via the retaining ring 4 to ensure that the pump is securely positioned on the neck of the bottle;

[0042] an inner horizontal cylinder 16 communicating with the inner vertical cylinder 8 (and thus with the dip tube 10) through a hole 18;

[0043] an outer horizontal cylinder 20 selectively communicating with the inner horizontal cylinder 16 and the discharge port 22 (described in more detail hereinafter)...

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PUM

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Abstract

A dispensing device comprising pump 2 for dispensing liquid, the pump comprising a hollow piston 42 moveable within a cylinder, and a valve 16, 40 controlling the supply of liquid to the piston / cylinder. During a first phase of operation the piston moves outwardly within the cylinder while the valve permits the supply of liquid into the chamber and during a second, subsequent, phase of operation the piston moves inwardly within the cylinder while the valve shuts off the supply of flowable material, with the result that liquid drawn into the chamber during the first phase is pressurised. Arrangements for effective priming and pre-compression of liquid are also described.

Description

technical field [0001] The present invention relates to pumps, particularly hand pumps. The invention also relates to a method of transporting a flowable material using a pump. Background technique [0002] Pumps adapted to spray or otherwise deliver liquids from containers when manually actuated are widely used in the field of cosmetic and household cleaning products. Typically, the pump is mounted on the vessel and communicates with the liquid through a dip tube. When the pump is actuated by the user, the pump then draws liquid from the container through the dip tube and into the pump body; it then drives the liquid from the pump body to a discharge. [0003] Various combinations of pumps, outlets and actuators may be used depending on the properties of the liquid to be delivered, the desired discharge flow regime and cost. For example, the trigger spray pump described in US Pat. No. 4,161,288 is commonly used to dispense household cleaning products such as liquid clean...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B11/00B05B1/34
CPCB05B11/0064B05B11/3009B05B1/3436B05B1/3473B05B11/307B05B11/0029B05B11/3061B05B11/1009B05B11/1061B05B11/107
Inventor D·J·沃卡姆
Owner WORDON