Gas spring-powered fastener driver

A powered fastener driver comprising:

• a pressure vessel in which a pressurized gas is maintained;
• a piston movable within the pressure vessel from a top-dead-center (TDC) position to a bottom-dead-center (BDC) position by the pressurized gas;
• a driver blade coupled for movement with the piston from the TDC position to the BDC position for driving a fastener into a workpiece;
• a lifting assembly configured to selectively engage the driver blade to move the driver blade from the BDC position toward the TDC position;
• a housing in which the pressure vessel and the lifting assembly are disposed,
• a first damper positioned between the pressure vessel and the housing;
• and
• a second damper positioned between the pressure vessel and the housing;
• wherein the first damper and the second damper are positioned asymmetric relative to one another about a plane containing an axis along which the driver blade is movable;
• and
• wherein the first damper and the second damper are configured to dampen movement of the pressure vessel relative to the housing.

A powered fastener driver comprising:

• a pressure vessel in which a pressurized gas is maintained;
• a piston movable within the pressure vessel from a top-dead-center (TDC) position to a bottom-dead-center (BDC) position by the pressurized gas;
• a driver blade coupled for movement with the piston from the TDC position to the BDC position for driving a fastener into a workpiece;
• a lifting assembly operable to move the driver blade from the BDC position toward the TDC position, the lifting assembly including a motor positioned with a motor case and a gear train positioned within a gear case, the motor being oriented along a motor axis;
• and
• a plurality of gear case bolts connecting the gear case and the motor case, the gear case bolts arranged in a gear case bolt pattern having an irregular quadrilateral shape as viewed perpendicular to the motor axis;
• a housing defining an interior surface within which the lifting assembly is positioned, the housing including a projection extending inwardly of the interior surface;
• and
• a magazine coupled to the housing by a magazine fastener that engages a magazine fastener receptacle in the projection;
• wherein the quadrilateral shape includes at least one obtuse included angle measured between two adjacent gear case bolts and the motor axis greater than 90 degrees and at least one acute included angle less than 90 degrees.