Cordless concrete nailer with improved power take-off mechanism

A cordless electric concrete nailer comprising:

• a power take-off (PTO) assembly positioned to selectively engage a concrete nail driver against a battery-powered electric motor driven flywheel, the PTO including:
• a bracket supporting a solenoid and a compression spring;
• a linkage arm coupled between a plunger of the solenoid and the compression spring, and the linkage arm being biased by the compression spring toward the concrete nail driver;
• a carrier supporting a pinch roller and the carrier being pivotably mounted to the bracket via a pivot pin;
• an engaging surface movable with the plunger between an engagement position in which the engaging surface engages a cooperating engaging surface of the carrier and orients the carrier into a corresponding engagement orientation, and a disengagement position in which the engaging surface is spaced away from the cooperating engaging surface of the carrier allowing the carrier to pivot outside the corresponding engagement orientation, wherein the spring of the concrete nailer provides a biasing force on the linkage arm that generates a compressive force of at least about 500 pounds per square inch on the concrete nail driver through the pinch roller.