Patent ID: 7477573

Claim:
An oscillation generator for seismic applications, comprising: a housing; permanent magnets securely attached to the side walls of said housing on a non-magnetic plate, said permanent magnets including a center permanent magnet which is disposed between two exterior permanent magnets, a polarity of said exterior permanent magnets being reversed relative to said center permanent magnet; a pair of coils housed in said housing being acted upon with alternating current or electrical impulse and the permanent magnets, said coils each being borne on a center leg of a packet of sheets cut in an E-shape, legs of a respective one of said packet of sheets which is associated with one of the pair of coils being oriented to point away from the legs of another respective one of said packet of sheets which is associated with a remaining one of the pair of coils, an extension of the free ends of the legs of said sheets cut in an E-shape positionally corresponding to said permanent magnets; and a block to which said coils are coupled, said block being linearly displaceable in said housing.