IMPROVEMENTS IN METERING VALVES FOR DISPENSERS

Title:

IMPROVEMENTS IN METERING VALVES FOR DISPENSERS

Document Type and Number:

WIPO Patent Application WO2006016151

Kind Code:

A3

Abstract:

A metering valve (1) is provided for a pressurised container (14) containing a pharmaceutical formulation. The valve has a stem (2) with a central flange (11) and a hollow open end (19) with a side port (20). The stem slides in a body (3) having larger and smaller diameter portions, and being closed off by a seal (4) against which the flange (11) rests in an inoperative position. A second seal is located around the-stem on the opposite side of the flange and trapped by a spring (6) which urges the stem into its inoperative position. When the stem is depressed, the inner seal (5) forms a sliding seal with the smaller diameter portion of the body to define a metering chamber (13) filled with the pharmaceutical. Continued depression opens the side hole (20) to allow the contents of the metering chamber to be dispensed, wherein at least one of the sealing gasket (8) or the inner seal (5) is formed as a co-moulding with at least a part of the valve body (3) or the valve stem, respectively.

Inventors:

WARBY RICHARD JOHN (GB)

Application Number:

PCT/GB2005/003132

Publication Date:

April 27, 2006

Filing Date:

August 10, 2005

Export Citation:

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Assignee:

BESPAK PLC (GB)
WARBY RICHARD JOHN (GB)

International Classes:

B65D83/14; B67D7/84; (IPC1-7): B65D83/14

Foreign References:

US20040139965A1	2004-07-22
FR2285815A1	1976-04-23
FR2568975A1	1986-02-14
US20020190085A1	2002-12-19
DE19825031A1	1999-02-11
US4811868A	1989-03-14
US2788925A	1957-04-16

Other References: