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:
Oct. 06, 2009
Filed:
Jul. 18, 2003
Graham Scott Gutsell, Cambridge, GB;
Nicholas John Bowman, Orwell, GB;
Iain Grierson Mcderment, Melbourn, GB;
Patrick James Campbell, Cambridge, GB;
Graham Scott Gutsell, Cambridge, GB;
Nicholas John Bowman, Orwell, GB;
Iain Grierson McDerment, Melbourn, GB;
Patrick James Campbell, Cambridge, GB;
The Technology Partnership PLC, Hertfordshire, GB;
Abstract
A valve mechanism is provided for use in an inhaler comprising a pressurized container, and a metering chamber, and a valve mechanism wherein the inlet and outlet valves are separate and can be operated independently. The pressure of the fluid in the canister is used to aid the opening of the outer valve so reducing the force to fire a dose. A variant of the valve mechanism allows the user to select from a range of dose volumes by appropriate orientation of the stem.