Valve control mechanism

Details Valve control mechanism Valve control mechanism

1979-08-17

1982-01-26

Dorner, Kenneth

Machine element or mechanism

Control lever and linkage systems

Elements

74532, G05G 506

Patent

active

043122450

ABSTRACT:
Actuation of a valve is prevented under certain circumstances wherein an axially reciprocable stem connected to the valve has shoulders thereon, which shoulders are selectively engageable by shiftable blocking bars.

REFERENCES:
patent: 3143192 (1964-08-01), Buchanan
patent: 3572161 (1971-03-01), Lichtenberger et al.
patent: 4222287 (1980-09-01), Drone et al.

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