Self-acting fluid non-return valve

Details Self-acting fluid non-return valve Self-acting fluid non-return valve

1982-07-09

1985-04-23

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

3 15, A61F 122, F16K 1503

Patent

active

045123667

ABSTRACT:
A self-acting fluid non-return valve (e.g. a prosthetic heart valve) comprises a flap member located in a smooth bored passage to turn about a pivoting axis between closed and open positions under the influence of pulsing fluid flow through the passage. The pivoting axis divides the flap member into major and minor areas, the former of which is downstream of the axis when the flap member is open to fluid flow. The movement of the flap member is caused by an aerofoil shaping of the flap member which is localized to a part only of the major area.

REFERENCES:
patent: 215887 (1979-05-01), Crossman
patent: 3352318 (1967-11-01), Yanowitz
patent: 3448465 (1969-06-01), Pierce
patent: 3726308 (1973-04-01), Eberhardt
patent: 3945398 (1976-03-01), Masheder
patent: 4425670 (1984-01-01), Figuera

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