F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
142/42
F16H 1/18 (2006.01) F16K 31/143 (2006.01)
Patent
CA 1139196
ABSTRACT OF THE DISCLOSURE 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 bores in the body and the housing and mounted for axial movement therein, a camming system for selectively engaging and disengaging the drive nut with the drive screw whereby en- gagement of the drive screw with the drive nut and rotation of the drive nut causes axial movement of the drive screw, and a biasing assembly operatively connected to the split drive nut which exerts a biasing engagement force on the drive nut when a given magnitude of resistance to engagement is encountered.
321376
Keystone International Inc.
Kirby Eades Gale Baker
LandOfFree
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