Metal working – Method of mechanical manufacture – Valve or choke making
Patent
1995-05-19
1997-12-16
Cuda, Irene
Metal working
Method of mechanical manufacture
Valve or choke making
29428, B23P 1500
Patent
active
056971532
ABSTRACT:
The fluid handling devices are capable of accurately handling substantially continuous fluid flow rates as low as about 0.01 cc/day. The devices are so miniaturized, corrosion-resistant and non-toxic that they are suitable for being implanted in the human body; and are capable of being mass produced at costs so low, by using micromachining techniques, such as etching, that they may be considered to be disposable. The devices are either passive devices which consume no electrical energy at all, or are active devices which consume very small amounts of electrical energy. The devices are reliable because they may have as few as only two parts, only one which is a moving part; and because they may handle fluids at very low pressures. The fluid handling devices include active piezoelectrically driven membrane pumps; and passive fluid flow regulators, on-off valves, flow switches and filters.
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Lawrence Dale M.
Saaski Elric W.
Cuda Irene
Moravan Gregory W.
Research International, Inc.
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