Valves and valve actuation – With means for blocking or disabling actuator – Released by non-valving actuator motion
Patent
1994-08-31
1995-08-08
Walton, George L.
Valves and valve actuation
With means for blocking or disabling actuator
Released by non-valving actuator motion
251104, 251229, 251276, 251331, F16K 3500, F16K 716
Patent
active
054391970
ABSTRACT:
In a flow rate control valve having a handle (12) for rotating a stem (9), the handle being locked to a bonnet (3) by a lock screw (14), the handle (12) comprises a handle main body (12') fixed to an upper end of the stem (9), and a tubular lock handle (12") coupled to the lower end of the handle main body (12'). The lock handle is movable in a direction orthogonal to an axial line of elongation Y of the stem 9 relative to the handle main body, with the lock handle enclosing the upper outer circumference of the bonnet (3), and the lock screw (14) being movable in the lock handle (12") in a direction nearly orthogonal to the axial line of elongation Y of the stem (9) to engage the bonnet (3).
REFERENCES:
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patent: 4471801 (1984-09-01), Lange
patent: 4620428 (1986-11-01), Kopesky
patent: 4687180 (1987-08-01), Simonelli et al.
patent: 5295660 (1994-03-01), Honma
patent: 5295662 (1994-03-01), Yamaji et al.
Itoi Shigeru
Kojima Tetsuya
Kiyohara Masako
Walton George L.
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