Patent ID: 6249199
Filing Date: 2001-06-19
Classification: B25B,H01F

Abstract:
Quick magnetizing and demagnetizing device for screwdrivers, comprising two outer casings and two sintered magnets, the outer casings being made of rubber material, an upper and a lower surfaces of each of the outer casings being both formed with slightly concave demagnetizing faces, an upper and a lower sections of the interior of the outer casing being respectively formed with two receiving cavities, a top face and two lateral sides of the upper receiving cavity and a bottom face and two lateral sides of the lower receiving cavity being respectively formed with a certain number of engaging ribs, two outer lateral sides of the central section of the outer casing being convex resilient sides, the interior of the center of the outer casing being formed with an elongated elliptic through hole, an outer end of the through hole forming a screwdriver socket, the sintered magnet being a long rectangular bar having a dimension about twice a dimension of the receiving cavity of the outer casing, under a condition that the identical poles are opposite to each other, the end sections of the two sintered magnets being respectively inserted into the upper and lower receiving cavities of one outer casing, the other end sections of the two magnets being symmetrically inserted into the upper and lower receiving cavities of the other outer casing.