F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 15/08 (2006.01) F15B 15/06 (2006.01) F15B 15/10 (2006.01) F16K 31/165 (2006.01)
Patent
CA 2422165
A method and apparatus for translating linear movement into rotational movement in an actuator configuration is provided. For example, a rotary actuator assembly includes a housing having a central bore. A piston is disposed within the housing and is linearly movable along an axis of the central bore. A rolling diaphragm is disposed within the housing and coupled with the piston. A bifurcated linkage having an end flange couples with the piston and the rolling diaphragm. An articulatable coupling further connects the bifurcated linkage with a rotating linkage. A spring button, which can be cone shaped, is disposed within the housing. A compression spring is retained between the end flange of the bifurcated linkage and the spring button, for example, by a threaded rod and nut. The assembly is arranged such that when force is applied to the rolling diaphragm the bifurcated linkage is linearly transported; which results in the pivoting of the rotating linkage about a pivot point. The pivot point can couple to a valve stem to control a valve.
Fisher Controls International Llc
Ridout & Maybee Llp
LandOfFree
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