Elastomeric dispensing pump that can be made with as few as two components

US20090302064A1Inactive Publication Date: 2009-12-10MABEL
24 Cites 32 Cited by

Patent Information

Authority / Receiving Office
US ¡ United States
Current Assignee / Owner
MABEL
Publication Date
2009-12-10
Estimated Expiration
Not applicable ¡ inactive patent

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Abstract

A fluid dispensing pump that can be manufactured from as few as two parts: a stationary pump base (200) provided with an inlet passageway (201), and an integral pump top (300) provided with a fluid-tight attachment to the pump base and including a generally rigid core (310) and a self-restoring elastomeric layer (320). The generally rigid core (310) has a base attachment portion (311) and a dispensing valve core (315). The elastomeric layer (320) includes a resilient self-restoring pump wall (323) and a dispensing valve membrane (325). Upon assembly of the pump base and the pump top, a fully functional dispensing pump (100) is created with an inlet passageway (101), a one-way inlet valve (102), a self-restoring resilient pump cavity of variable volume (103) and a one-way dispensing valve (105). The one-way dispensing valve is preferably self-closing. The integral pump top (300) may have a rigid or semi-rigid actuator portion (314) bound to or imbedded into the resilient self-restoring pump wall (323). The dispensing pump of the present invention may have a valved venting passage for those applications that require it and may have a secure lock-in mechanism for leakage prevention during storage or transportation.
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Description

BACKGROUND

[0001] 1. Field of the Invention

[0002] The present invention relates generally to the field of fluid dispensing pumps and more particularly to an elastomeric dispensing pump with optional self-closing, positive shut-off and valved venting passage mechanisms and that can be made with as few as two easily assembled components.

[0003] 2. Description of the Prior Art

[0004] Dispensing pumps are well known in the art and are commonly used for dispensing liquids having widely varying flow characteristics and viscosities. The form of discharge from these pumps varies from a fine spray to a slow moving flow. Common examples are numerous dispensers found on the market such as container-mounted, finger-operated dispensing pumps for such products as hand creams, lotions, shampoos, liquid soap or window cleaner as well as wall-mounted dispensers such as soap dispensers found in public bathrooms.

[0005] Reciprocating piston pumps are the most widely used type of dispensing pumps. Such pumps ar...

Claims

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