Dual-Bladed Multi-Tool Device

A power tool assembly comprising:

• a housing including a head end, a handle end, and an elongated body being coupled to and extending between the head end and the handle end to define an interior space, the elongated body narrowing between the head end and the handle end wherein the elongated body is configured to be held by a user proximate to the handle end, the housing having a top side and a bottom side;
• a pair of blades being coupled to the housing, the pair of blades being positioned at the head end, the pair of blades extending outwardly from the head end, the pair of blades being removably coupled to the housing, the pair of blades including:
• an upper blade including:
• an upper blade coupling end being removably positioned within the head end of the housing, the upper blade coupling end having an upper blade coupling end primary edge and an upper blade coupling end secondary edge, the upper blade coupling end being concavely arcuate between the upper blade coupling end primary edge and the upper blade coupling end secondary edge;
• and
• an upper blade cutting edge being distal to the housing, the upper blade cutting edge being sharpened wherein the upper blade cutting edge is configured to cut an object, the upper blade cutting edge being serrated;
• a lower blade being positioned beneath the upper blade, the lower blade including:
• a lower blade coupling end being removably positioned within the head end of the housing, the lower blade coupling end having a lower blade coupling end primary edge and a lower blade coupling end secondary edge, the lower blade coupling end being concavely arcuate between the lower blade coupling end primary edge and the lower blade coupling end secondary edge;
• and
• a lower blade cutting edge being aligned with the upper blade cutting edge of the upper blade, the lower blade cutting edge being sharpened wherein the lower blade cutting edge is configured to cut the object, the lower blade cutting edge being serrated;
• a drive assembly being coupled to the housing, the drive assembly being coupled to the pair of blades, the drive assembly moving the upper blade cutting edge of the upper blade and the lower blade cutting edge of the lower blade in opposing directions wherein the drive assembly is configured to facilitate the user in cutting the object with the pair of blades, the drive assembly including:
• a motor being positioned in the interior space;
• a power input being coupled to the housing, the power input being electrically coupled to the motor, the power input being configured to be electrically couplable to an extrinsic power source wherein the power input is configured to transfer power from the extrinsic power source to the motor, the power input including a power cord extending from the handle end of the housing;
• a drive shaft being coupled to the motor wherein the drive shaft is rotated by the motor, the drive shaft extending from the motor toward the head end of the housing;
• a drive shaft gear being coupled to the drive shaft distally to the motor;
• a spindle being positioned in the interior space, the spindle engaging the drive shaft wherein rotation of the drive shaft rotates the spindle, the spindle being perpendicular to the drive shaft;
• a spindle gear being coupled to the spindle, the spindle gear physically contacting the drive shaft gear to engage the spindle with the drive shaft;
• a drive wheel being coupled to the spindle distally to the spindle gear wherein rotation of the spindle rotates the drive wheel, the drive wheel being circular, the drive wheel being planar;
• an upper drive bearing being coupled to the drive wheel, the upper drive bearing extending upwardly from the drive wheel, the upper drive bearing being pivoted in a first direction around a drive radius when the drive wheel is rotated, the drive radius being oblong;
• an upper drive plate being coupled to the upper drive bearing wherein rotation of the upper drive bearing in the first direction oscillates the upper drive plate in a primary direction, the upper blade being coupled to the upper drive plate wherein oscillation of the upper drive plate oscillates the upper blade in the primary direction;
• a lower drive bearing being coupled to the drive wheel, the lower drive bearing extending downwardly from the drive wheel, the lower drive bearing being pivoted in the first direction around the drive radius when the drive wheel is rotated;
• and
• a lower drive plate being coupled to the lower drive bearing wherein rotation of the lower drive bearing in the first direction oscillates the lower drive plate in a secondary direction, the lower blade being coupled to the lower drive plate wherein oscillation of the lower drive plate oscillates the lower blade in the secondary direction;
• a blade retainer assembly releasably coupling the pair of blades to the drive assembly the retainer including:
• an upper blade slot extending through the head end of the housing into the upper drive plate, the upper blade slot having dimensions being complementary to dimensions of the upper blade wherein the upper blade is positionable within the upper blade slot;
• a lower blade slot extending through the head end of the housing into the lower drive plate, the lower blade slot having dimensions being complementary to dimensions of the lower blade wherein the lower blade is positionable within the lower blade slot;
• a pole being positioned within the head end of the housing, the pole extending through the upper drive plate and the lower drive plate, the pole being perpendicular to the upper drive plate and the lower drive plate wherein the pole extends upwardly from the bottom side of the housing;
• a blade change lever being pivotably coupled to the head end of the housing, the blade change lever being pivotable away from the housing to release the pair of blades, the blade change lever being pivotable toward the housing to secure the pair of blades;
• a blade change detent being coupled to the blade change lever, the blade change detent being movably positioned within the head end of the housing wherein the blade change detent moves inwardly toward the pole when the blade change lever is pivoted away from the housing and wherein the blade change detent moves outwardly from the pole when the blade change lever is pivoted toward the housing, the blade change detent being spaced from the pole when the blade change lever is pivoted away from the housing;
• a lower blade retainer pivot being coupled to the pole, the lower blade retainer pivot being positioned above the upper drive plate, the blade change detent contacting the lower blade retainer pivot when the blade change detent is moved inwardly toward the pole;
• an upper blade retainer pivot being movably coupled to the pole, the upper blade retainer pivot being spaced from the lower blade retainer pivot, the blade change detent contacting the upper blade retainer pivot when the blade change detent is moved inwardly toward the pole, the upper blade retainer pivot being moved upwardly toward the lower blade retainer pivot when the blade change detent contacts the upper blade retainer pivot, the upper blade retainer pivot being moved downwardly away from the lower blade retainer pivot when the blade change detent is spaced from the pole;
• a tension spring being coupled to the pole, the tension spring being positioned between the lower blade retainer pivot and the upper blade retainer pivot wherein the tension spring is compressed when the upper blade retainer pivot moves toward the lower blade retainer pivot and wherein the tension spring is released when the upper blade retainer pivot moves away from the lower blade retainer pivot;
• a lower blade retainer being coupled to the pole, the pole urging the lower blade retainer upwardly toward the lower drive plate to secure the lower blade within the lower blade slot when the blade change detent is spaced from the pole, the pole urging the lower blade retainer downwardly from the lower drive plate to release the lower blade from the lower blade slot when the blade change detent is moved inwardly toward the pole, the lower blade retainer including:
• a pair of lower blade pins engaging the lower blade when the lower blade retainer is urged upwardly toward the lower drive plate, the pair of lower blade pins being spaced from the lower blade when the lower blade retainer is urged downwardly from the lower drive plate;
• and
• an upper blade retainer being coupled to the upper blade retainer pivot, the upper blade retainer pivot urging the upper blade retainer downwardly toward the upper drive plate to secure the upper blade within the upper blade slot when the tension spring is released, the upper blade retainer pivot urging the upper blade retainer upwardly from the upper drive plate to release the upper blade form the upper blade slot when the tension spring is compressed, the upper blade retainer including:
• a pair of upper blade pins engaging the upper blade when the upper blade retainer is urged downwardly toward the upper drive plate, the pair of upper blade pins being spaced from the upper blade when the upper blade retainer is urged upwardly from the upper drive plate.