发明名称 Apparatus and methods for delivering a predetermined amount of a pressurized fluid
摘要 The present invention relates to metering valves and methods for repeatedly delivering a precise amount of a pressurized fluid such as an aerosol. Each metering valve is configured such that the metering chamber exists only upon actuation of the valve stem to dispense a dosage. Thus, the metering chamber is created, filled with aerosol formulation, and emptied during the brief moment that the valve stem is depressed and subsequently released by the user to dispense a dosage. Alternative embodiments of the present invention also include mechanisms for pressure filling an aerosol container through such a metering valve.
申请公布号 US4819834(A) 申请公布日期 1989.04.11
申请号 US19860905306 申请日期 1986.09.09
申请人 MINNESOTA MINING AND MANUFACTURING COMPANY 发明人 THIEL, CHARLES G.
分类号 F16K21/00;A61M15/00;B65D83/14;B65D83/44;G01F11/02;(IPC1-7):G01F11/10 主分类号 F16K21/00
代理机构 代理人
主权项
地址