Patent ID: 7644533

Claim:
An apparatus for luring fish using sound, the apparatus comprising: a shaft extending axially along a rotational axis, the shaft having a forward end portion for connection to a separate fishing line, a rearward end portion opposite the forward end portion, and a mid-section extending between the forward and rearward end portions; a first rotator member having a first hub with a non-planar rearwardly facing end, a cylindrically shaped shield and impeller blades both disposed inside the cylindrically shaped shield and extending from the first hub to the cylindrically shaped shield, said first rotator member being mounted on the mid-section of said shaft slideably for movement axially along said shaft and rotatably for rotation about the rotational axis in response to water pressure against the impeller blades when said shaft is moved forwardly in a body of water, the cylindrically shaped shield of said first rotator member having open front and rear ends joined by a cylindrical wall with an outer surface substantially equidistant from the rotational axis, and the cylindrically shaped shield being devoid of transverse openings through the cylindrical wall and being devoid of anything attached to the cylindrical wall extending farther from the rotational axis than the outer surface of the cylindrical; and a second rotator member mounted on the mid-section of the shaft, the second rotator member having a second hub with a non-planar forwardly facing end bearing against the non-planar rearwardly facing end of the first hub as at least said first rotator member rotates relative to said second rotator member, one of the non-planar rearwardly facing end of the first hub and the non-planar forwardly facing end of the second hub having circumferentially spaced apart protrusions and the other of the non-planar rearwardly facing end of the first hub and the non-planar forwardly facing end of the second hub having matching circumferentially spaced apart indentations which cause said first rotator member to move axially along the shaft toward and away from said second rotator member as the protrusions move in and out of the indentations during the rotation of said first rotator member relative to said second rotator member, thereby producing fish-luring vibrations.