Valve actuator declutch mechanism

Details Valve actuator declutch mechanism Valve actuator declutch mechanism

1994-03-07

1995-12-26

Bonck, Rodney H.

Machine element or mechanism

Alternate manual or power operators

74425, 74526, 25112903, F16K 3105

Patent

active

054777526

ABSTRACT:
An improved declutch mechanism for a manual override for a valve. The declutch mechanism includes a U-shaped declutch layer that is fit with a spring-biased locking bar. The locking bar is biased to engage the housing of the override mechanism to prevent accidental or inadvertent operation of the declutch lever. A single hand may be used to disengage the locking bar from the housing to allow operation of the declutch lever. The declutch mechanism also includes a safety mechanism to prevent the override mechanism from being disengaged when its actuator shaft is not in the default position. The safety mechanism includes a plunger that is movable between a first position in which the plunger prevents the locking bar from being disengaged with the housing, and a second position in which the plunger is received within a keyway in the actuator shaft to allow the locking bar to be disengaged from the housing.

REFERENCES:
patent: 1072282 (1913-09-01), Waninger
patent: 2391418 (1945-12-01), Hodgson et al.
patent: 2878687 (1959-03-01), Kron et al.
patent: 4130030 (1978-12-01), Stratienko
patent: 4429592 (1984-02-01), Stevenson
patent: 4616803 (1986-10-01), Schils
El-O-Matic Bulletin No. MO184, dated prior to Feb. 16, 1993.
The Mastergear Corporation ad, dated prior to Feb. 16, 1993.

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