Patent ID: 7723634
Filing Date: 2010-05-25
Classification: H01H,Y10T

Abstract:
1. A magnetic intensifier for use in a switch for severing an electrical circuit having a pair of electrical contacts separating along an axis and producing an arc along the axis between front surfaces of the contacts, at least one contact providing a turnback wherein current to the contact passes along at least a partial loop passing in part behind the contact, the magnetic intensifier comprising: a magnetically responsive body forming at least a portion of the turnback proximate the one contact and adapted to support and communicate current to the contact; and an arm extending from the magnetically responsive body adjacent the contact so that the arm is continuous with and formed in a unitary and continuous manner with respect to the magnetically responsive body that forms the turnback and extending beyond a side of the one contact in a direction generally aligned with the axis and proximate the one contact to manipulate magnetic flux formed by the partial loop to magnetically and electrically manipulate the arc toward an arc arrestor and so that no portion of the arm extends into an area defined by the partial loop.