Self powered magazine hammer

Details Self powered magazine hammer Self powered magazine hammer

B - Operations, Transporting

25

C

B25C 1/04 (2006.01) B25C 1/00 (2006.01) B25C 1/02 (2006.01) B25D 9/06 (2006.01)

Patent

CA 2086718

ABSTRACT A hammer including a magazine for holding and feeding fasteners such as nails including hydraulic means for driving the fasteners. The hammer head is movable to the rearward with respect to the body and the handle upon impacting a work surface driving one or more pistons rearwardly. Cylinders for the pistons surround a single fastener driver cylinder and piston of smaller surface area than rearward traveling piston or pistons. Hydraulic fluid is forced from the large or multiple piston(s) through a manifold to the rear of the fastener drive piston. Rapid forward movement of the fastener drive piston sets the fastener. Forward movement of the striking head by a return spring or vacuum means opens a chamber for the next fastener to be placed by spring action or hydraulic feed in front of the fastener drive blade, ready for the next fastener placement. The body of the hammer is secured to the handle at an angle A which is between 95° and 116° and the center of gravity of the hammer is located between at handle location ? 10% of the distance from the handle to the normal line through the head in its ready-to-fasten position. Other embodiments of this invention include features of hydraulic nail or fastener feed, magnetic attraction and repulsion for reset of the striking head, vacuum assist return, direct coupling of the striking head to the drive cylinder and the use of linear bearings for misalignment compensation.

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