Patent ID: 8217741
Filing Date: 2012-07-10
Classification: H01F,H01H

Abstract:
1. An switching device comprising: a housing having a body defining a cavity formed therein with a circular cross-sectional profile and with a first cavity lateral axis that intersects and is orthogonal to a second cavity lateral axis on the cross-sectional profile and with a centered cavity longitudinal axis that intersects and is orthogonal to the first cavity lateral axis and second cavity lateral axis, wherein the first cavity lateral axis intersects the housing body at opposite housing magnetic poles with respect to the centered longitudinal axis; a core having a body with cross-sectional profile that is smaller than and matches the cavity cross-sectional profile placed in the cavity such that a centered core longitudinal axis aligns with the centered cavity longitudinal axis and that there is an annular gap between the core body and housing body, the core body having opposite core magnetic poles on a core lateral axis that are magnetically aligned with the housing magnetic poles when in a natural magnetic state; an armature connected with the housing such that opposite armature magnetic poles are aligned with the second cavity lateral axis, wherein the core magnetic poles are magnetically aligned with the armature magnetic poles when in an energized magnetic state; and a coil wound around the armature between the opposite armature magnetic poles, wherein the coil generates a magnetic field in the armature that rotates the core from the natural magnetic state to the energized magnetic state when the coil is energized, wherein the core returns to the natural magnetic state when the coil is not energized.