Ball valve coupling

Details Ball valve coupling Ball valve coupling

1993-06-21

1995-02-07

Fox, John C.

Valves and valve actuation

Rotary valves

Ball valve

25131516, F16K 506

Patent

active

053869672

ABSTRACT:
A coupling for use in a rotary Ball valve having a spherical ball with a passageway therethrough controlling the flow of fluid through the valve. The coupling is particularly suited for use with non-metallic, for example, ceramic, spherical balls which are rotated by torque applied to a metallic actuator shaft extending from the valve body. The coupling includes a plurality of depressions and protrusions formed at the interface of the non-metallic and metallic components. The depressions and protrusions are positioned away from the central axis of the spherical ball. A cushion is interposed between the metallic and non-metallic components to further disperse the force applied to the non-metallic component so that as torque is applied to the shaft the non-metallic component is rotated without breakage thereof.

REFERENCES:
patent: 2998223 (1961-08-01), Baxter
patent: 3167300 (1965-01-01), Kaiser
patent: 3744755 (1973-07-01), Gary, Jr. et al.
patent: 4936546 (1990-06-01), Bercham
patent: 5181691 (1993-01-01), Taniguchi et al.

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