Aura Systems Inc.

Christopher K Sortore

Keith O Stuart

Fernando B Morinigo

Dennis C Bulgatz

David Lee

An electromagnetically actuator is disclosed having an electromagnet, a core element, the core element having a normally biased initial spaced apart first position distal from the electromagnet when the electromagnet is off and a second stop position proximal from the electromagnet when the electromagnet is on, a first resilient member adapted to bias said core element in the normally biased first position, and a second resilient member adapted to bias the electromagnet away from the core. The first resilient member is more resilient than the second resilient member. Therefore, the core approaches the electromagnet when the electromagnet is on until the core reaches the fixed stop position, and the electromagnet subsequently approaches the core to the fixed stop position. The actuator may further include an adjustment member that engages the electromagnet so as to control the pressure of the electromagnet against the second resilient member, whereby the axial position of the electromagnet is controlled.

Electromagnetically actuated valve

A high efficiency solenoid includes a magnetic material solenoid core, an electrical current conductive coil and a moveable magnetic plunger. The solenoid core has a first end portion, a first face disposed at the first end portion, a second end portion opposite the first end portion and a continuous channel disposed in the first face. The electrical current conductive coil disposed in the channel and arranged so that magnetic flux developed in response to a current in the coil forms a first magnetic pole on the first face interiorly of the channel and a second magnetic pole of opposite plurality on the first face exteriorly of the channel. The plunger has a surface and a facing coextensive relationship to the first face. The plunger is normally biased in a first position to space the surface from the first face to form a gap therebetween. There is no magnetic material which is received through a bore within the solenoid core. Therefore, the magnetic flux when present is bidirectional through the gap so that all magnetic flux exterior of the solenoid core develops a magnetic force substantial orthogonal to the surface to move the plunger to its second position, which is drawn towards the solenoid core reducing the gap.

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Redondo Beach, CA, United States of America

Christopher K Sortore