Method for forming a ball valve connection and structure

Details Method for forming a ball valve connection and structure Method for forming a ball valve connection and structure

1989-10-02

1990-10-23

Fox, John C.

Valves and valve actuation

Rotary valves

Ball valve

251309, F16K 506

Patent

active

049646141

ABSTRACT:
A method of manufacturing a ball valve member for cooperation with a valve and a ball valve member includes utilizing a cutting tool having first and second annular cutting surfaces with one of the cutting surfaces having a smaller radius than the other cutting surface whereby a slot is cut in the surface of the ball valve member to a greater depth than heretofore possible for permitting greater penetration of a valve stem into the ball valve member and a recess is formed adjacent the slot for the ball valve stem for receiving a lug member mounted on the stem to increase torque transmission to the ball valve element when the operation stem is rotated.

REFERENCES:
patent: 2839266 (1958-06-01), Kaiser
patent: 3334862 (1967-08-01), Hookway, Jr.
patent: 3363878 (1968-01-01), Smith et al.
patent: 3437106 (1968-04-01), Mueller et al.
patent: 3557832 (1968-11-01), Mueller
patent: 3601363 (1969-08-01), Mueller
patent: 3610381 (1970-03-01), Mueller
patent: 3921662 (1975-11-01), Hauffe et al.
patent: 3940107 (1976-02-01), Allenbough, Jr.
patent: 4342444 (1982-08-01), Sonderman
patent: 4815701 (1989-03-01), Stone

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