Check-valve construction

Details Check-valve construction Check-valve construction

1979-10-02

1981-02-10

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

1375121, 137527, 251337, F16K 1503

Patent

active

042495679

ABSTRACT:
The invention contemplates a combined closure spring and upstop having particular application to check valves having multiple valve members. The invention is illustrated by one embodiment involving two valve members hinged on a single axis oriented diametrically of the valve-flow passage, and by another embodiment involving more than two valve members hinged on separate axes oriented tangentially of the valve-flow passage.

REFERENCES:
patent: 586618 (1897-07-01), Noll
patent: 2603450 (1952-07-01), Long
patent: 2877792 (1959-03-01), Tybus
patent: 3509908 (1970-05-01), Latham et al.
patent: 3538946 (1970-11-01), Hilsheimer
patent: 3640306 (1972-02-01), Vogt
patent: 3678958 (1972-07-01), Satterwhite et al.
patent: 4079751 (1978-03-01), Partridge et al.
patent: 4196745 (1980-04-01), Schutzer

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