F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
310/115, 310/38
F04B 35/04 (2006.01) H02K 7/14 (2006.01) H02K 33/02 (2006.01)
Patent
CA 1084976
ABSTRACT OF THE DISCLOSURE The present invention provides an electromagnetic circuit of the type in which a magnetically permeable armature is disposed to axially reciprocate within an air-gap defined by a pair of spaced-apart, coaxial poles on a fixed magnetic core, said air-gap comprising means providing a first space between said poles, said space having a circular cross section perpendicular to the axis of reciprocation of said armature, and means providing opposing pairs of exposed coplanar gap surfaces, the planes of said surfaces being displaced on opposite sides of said axis of reciprocation such that the maximum displacement between said pairs of surfaces is less than the maximum diameter of said first space, the space between said pairs of surfaces being devoid of core material, the improvement wherein said maximum displacement between said pairs of surfaces is greater than 16.7% of the cross-sectional area of said poles as measured on a plane-parallel to said pairs of surfaces.
332895
Marks & Clerk
Tecumseh Products Company
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