Invention Application
- Patent Title: FLOW CONTROL AND FILTRATION METHOD AND APPARATUS
- Patent Title (中): 流量控制和过滤方法和装置
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Application No.: PCT/US0025145Application Date: 2000-09-13
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Publication No.: WO0119438A9Publication Date: 2002-09-26
- Inventor: PAVKOV RICHARD M , ARMER THOMAS A
- Applicant: SHEFFIELD PHARMACEUTICALS INC
- Assignee: SHEFFIELD PHARMACEUTICALS INC
- Current Assignee: SHEFFIELD PHARMACEUTICALS INC
- Priority: US15364799 1999-09-13
- Main IPC: F16L55/00
- IPC: F16L55/00 ; A61M11/02 ; A61M15/00 ; B01D61/16 ; B01D71/16 ; B01D71/26 ; B01D71/36 ; B01D71/64 ; B01D71/68 ; B01J4/00 ; B05B1/32 ; B05B15/00
Abstract:
A porous material valve (18) is placed in the fluid conveyance path of a fluid dispensing apparatus (2). By selecting a specific thickness of the porous material, the size of the pores, the pore volume, and the hydrophillic/hydrophobic balance of the material, a predetermined activation/closure pressure and flow rate is achieved.
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