GB Patent

GB2251898A — Metered dose spray system

Assigned to D M W · Expires 1992-07-22 · 34y expired

What this patent protects

A metered dose aerosol delivery system comprising a piston 55 fired by a spring 59 or gas loading to deliver a dose, means 52, 54 of loading said piston 55, a cylinder 57 in which the piston is located, an inlet valve 61 connecting a container 63, which is preferably sealed from …

USPTO Abstract

A metered dose aerosol delivery system comprising a piston 55 fired by a spring 59 or gas loading to deliver a dose, means 52, 54 of loading said piston 55, a cylinder 57 in which the piston is located, an inlet valve 61 connecting a container 63, which is preferably sealed from the atmosphere, to the cylinder said valve being of the non-return type and opening when loading the piston and closing when firing, and an exit non-return valve 71 connecting said cylinder to an atomising nozzle having the reverse characteristics of the inlet valve. A detent 14 may be used to retain the piston 55 in its loaded state until released by depressing button 58. <IMAGE>

Drugs covered by this patent

Patent Metadata

Patent number
GB2251898A
Jurisdiction
GB
Classification
—
Expires
1992-07-22
Drug substance claim
No
Drug product claim
No
Assignee
D M W
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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