The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 1989
Filed:
Oct. 14, 1987
Glaxo Group Limited, London, GB;
Abstract
A valve is provided for dispensing metered doses from an aerosol container, which contains a substance to be dispensed suspended in a liquid propellant. The valve comprises a valve body (2, 3), first and second valve seals (6,7) at opposite ends of the valve body (2,3), and a valve stem (5) having an outlet (18) and a transfer port (19) extending from the exterior of the valve stem (5) to the outlet (18). A metering chamber (4) is defined by the internal wall of the valve body (2,3), the first and second valve seals (6,7) and the portion of the valve stem (5) within the cavity. The valve stem (5) is biased to a position in which, when the container is orientated with the valve at the bottom, liquid can enter the metering chamber through at least one orifice (12) which communicates with the interior of the container at a location which, when the container is orientated with the valve at the bottom, is an appreciable distance above the nearest surface which is horizontal or has an appreciable horizontal component. The orifice (12) is directed transversely with respect to the direction of movement of the valve stem (5).