Patent ID: 7560655
Filing Date: 2009-07-14
Classification: H01H

Abstract:
1. A movable contact comprising: a dome portion made of a metal sheet having a spring property, the dome portion having substantially a dome shape having a convex surface and a concave surface opposite to the convex surface, the dome portion having a periphery; and four projections provided on the concave surface of the dome portion, wherein the periphery of the dome portion has substantially an oval shape having a longitudinal direction, the periphery having two linear peripheries in parallel with the longitudinal direction and two arcuate peripheries connected to the two linear peripheries at four corners, the four corners are arcuate, two diagonal lines connecting the four corners intersect at a center of the dome portion, the four projections are located on the two diagonal lines at identical distances from the center, and the four projections have semispherical shapes.