H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 41/02 (2006.01) F16K 31/06 (2006.01) F25B 41/06 (2006.01) H01F 7/16 (2006.01)
Patent
CA 2145311
An actuator (24) for a valve (10) includes a housing tube (26) enclosing an internal cavity (48). A plunger (42) is mounted for movement in the internal cavity. The plung- er includes four slots (50). Rollable spheres (58) are posi- tioned in the slots between staked areas (62). A magnetic field created by electrical current passing through a coil (34) moves the plunger downward to open fluid flow through a control element (20). Flow through the control element enables controlled flow from an inlet (14) to an outlet (16) of the valve. The actuator construction provides for substantial elimination of sliding friction acting on the plunger, reduces hysteresis and the amount of power re- quired to move the plunger, and facilitates accurate control of fluid flow rate through the control element.
Durham Kenton Lee
Riefler Roger G.
Parker-Hannifin Corporation
Ridout & Maybee Llp
LandOfFree
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