Normally closed check valve

Details Normally closed check valve Normally closed check valve

1984-05-24

1985-08-20

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1514

Patent

active

045358206

ABSTRACT:
A normally closed, one-way check valve having a body composed of two cylindrical containers which complement each other, each of said containers having a tubular projection with a liquid opening therethrough, one of said cylindrical chambers provided with a plurality of longitudinally extending ribs therealong for preventing sticking of a valve disc as contained within an assembled valve device, also further including a traverse bar for pressing against a valve disc. The other body component is provided with a pointed triangular support and also a plurality of radially extending ribs for preventing a valve disc from opening so far as to close off the egress port provided with said second element, together with a rubber resilient valve disc which is retained between the pointed triangular support and the traverse bar when the unit is assembled by sonic welding into a permanently assembled device. A further embodiment provides for a permanent dimple in the valve disc prior to assembly of the component elements, while a further embodiment provides a valve disc with an elongated groove or recess of somewhat oval shape for reception of the pointed triangular support member of the second body component.

REFERENCES:
patent: 4181146 (1980-01-01), Goglio
patent: 4210173 (1980-07-01), Choksi et al.
patent: 4222407 (1980-09-01), Ruschke et al.
patent: 4246932 (1981-01-01), Raines
patent: 4286628 (1981-09-01), Paradis et al.
patent: 4310017 (1982-01-01), Raines
patent: 4369812 (1983-01-01), Paradis et al.
patent: 4434811 (1984-03-01), Murdoch

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