Manual control apparatus

Details Manual control apparatus Manual control apparatus

1976-08-09

1978-03-28

Wyche, Benjamin W.

Machine element or mechanism

Gearing

Directly cooperating gears

F16H 118

Patent

active

040808440

ABSTRACT:
A manual override apparatus for use with normally, automatically, powered driving assemblies such as valve actuators, the override apparatus having a body with a bore therethrough, a housing secured to the body and having an axial bore which registers with the bore in the body, a rotatable split drive nut mounted in the housing, a drive screw extending into the registering pores in the body and the housing and mounted for axial movement therein, and a camming system for selectively engaging and disengaging the drive nut with the drive screw whereby engagement of the drive screw with the drive nut and rotation of the drive nut causes axial movement of the drive screw.

REFERENCES:
patent: 1905569 (1933-04-01), Rapellin
patent: 2001057 (1935-05-01), Fellay
patent: 2373097 (1945-04-01), Boyles et al.
patent: 3733914 (1973-05-01), Sheesley
patent: 3961547 (1976-06-01), Shainberg

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