Powered fastener driver

A powered fastener driver comprising:

• a housing;
• a nosepiece extending from the housing;
• a driver blade movable within the nosepiece between a ready position and a driven position, the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade;
• a piston coupled to the driver blade for movement therewith;
• a driver cylinder within which the piston is movable;
• a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder;
• a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position;
• and
• a lifting mechanism having a rotatable lifter with a cam formed thereon, wherein as the lifter rotates the cam moves a shuttle operably coupled to the latch to disengage the latch from the plurality of locking projections to allow the driver blade to move to the driven position.

A powered fastener driver comprising:

• a housing;
• a nosepiece extending from the housing;
• a driver blade movable within the nosepiece between a ready position and a driven position, the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade;
• a piston coupled to the driver blade for movement therewith;
• a driver cylinder within which the piston is movable;
• a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder;
• a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position;
• and
• a lifting mechanism having a rotatable lifter with a plurality of drive pins that engage the drive teeth on the driver blade to move the driver blade to the ready position, wherein the lifter further comprises a cam formed on an upper surface thereof to actuate the latch assembly and release the driver blade to the driven position, and a magnet nested within the cam, wherein the magnet is sensed by a sensor to de-energize a motor coupled to the lifter when the driver blade is moved to the ready position.