Coupling member of a pipe coupling and valve body used in a...

Details Coupling member of a pipe coupling and valve body used in a... Coupling member of a pipe coupling and valve body used in a...

2006-04-18

2006-04-18

Look, Edward K. (Department: 3751)

Valves and valve actuation

With correlated flow path

Valve operated by joining flow path sections

C251S148000, C251S122000

Reexamination Certificate

active

07028983

ABSTRACT:
When a valve body of a coupling member is moving toward a fluid passage closed position, if the valve body becomes inclined, the present invention prevents a sealing ring of the valve body from coming into friction engagement with a conical wall surface of the fluid passage and coming to a stop. The valve body has a valve head provided with a disk-shaped portion, a sealing ring, and a sealing ring support that supports this sealing ring against the valve head; and an angle that a line tangent to a disk-shaped member of the valve head and sealing ring makes with respect to the axis of the valve body is less than or equal to an angle that the conical wall surface, forming the valve seat of the fluid passage, makes with respect to the axis of this fluid passage.

REFERENCES:
patent: 1919232 (1933-07-01), Lee
patent: 1968779 (1934-07-01), Johnsen
patent: 5027845 (1991-07-01), Silagy
patent: S50-031964 (1975-09-01), None
patent: S62-031748 (1987-08-01), None

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