Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1986-05-27
1987-12-15
Weakley, Harold W.
Fluid handling
Line condition change responsive valves
Direct response valves
137859, 137494, 604247, F16K 1514
Patent
active
047125837
ABSTRACT:
A valve for use in medical applications is disclosed which is a highly precise, passive, one-way valve which makes an excellent inlet valve or outlet valve in a drug infusion pump. The valve operates with a very small forward pressure, requires only a small amount of fluid in the valve chamber, and operates in a positive and predictable fashion, even after an extended shelf life. The valve, may be inexpensively molded in one piece, thereby facilitating construction of a disposable pump, and may be installed with the portion of the pump housing contacting the top surface of the valve being flat, thereby further reducing manufacturing costs.
REFERENCES:
patent: 2467189 (1949-02-01), Hess
patent: 2497906 (1950-02-01), Peters et al.
patent: 2758609 (1956-08-01), Dickert et al.
patent: 3190496 (1965-06-01), Weiland, Jr. et al.
patent: 4143853 (1979-03-01), Abramson
patent: 4355639 (1982-10-01), DiSalvo
patent: 4493339 (1985-01-01), Porter, Jr.
Gorton Lanny A.
Guleserian Armen J.
Livingston John H.
Pelmulder John P.
Miller Leslie S.
Pacesetter Infusion, Ltd.
Weakley Harold W.
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