Abstract: A gas spring-powered fastener driver includes an outer cylinder, an inner cylinder positioned within the outer cylinder, and a moveable piston positioned within the inner cylinder. The gas spring-powered fastener driver further includes a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The outer cylinder and the inner cylinder define a first total volume in which gas is located when the driver blade is in the TDC position. The outer cylinder and the inner cylinder define a second total volume, in which gas is located when the driver blade is in the BDC position. A compression ratio of the second total volume to the first total volume is 1.7:1 or less. And, a force acting on the driver blade when located in the TDC position is at least 90 pound-force (lbf) but no more than 450 pound-force (lbf).

Abstract: A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The driver blade defines a driving axis. The driver blade includes a body having a first side and an opposite, second side with the driving axis passing therebetween. A plurality of teeth extends from the first side of the body. A plurality of projections extends from the second side of the body. The body, the teeth, and the projections are bisected by a common plane. A lifter is operable to move the driver blade from the BDC position toward the TDC position, and is engageable with the teeth. A latch assembly is movable between a latched state, and a released state. The latch assembly is configured to engage with the projections.

Abstract: A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The driver blade defines a driving axis. The driver blade includes a body having a first side and an opposite, second side with the driving axis passing therebetween. A plurality of teeth extends from the first side of the body. A plurality of projections extends from the second side of the body. The body, the teeth, and the projections are bisected by a common plane. A lifter is operable to move the driver blade from the BDC position toward the TDC position, and is engageable with the teeth. A latch assembly is movable between a latched state, and a released state. The latch assembly is configured to engage with the projections.

Abstract: A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The driver blade includes a body and a plurality of teeth extending therefrom. The driver blade defines a driving axis. The gas spring-powered fastener driver further includes a lifter operable to move the driver blade from the BDC position toward the TDC position. Each one of the plurality of teeth includes a contact surface engageable with the lifter. The contact surface of each tooth defines an included angle with the driving axis that is greater than 90 degrees.

Abstract: A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The driver blade defines a driving axis. The driver blade includes a body having a first side and an opposite, second side with the driving axis passing therebetween. A plurality of teeth extends from the first side of the body. A plurality of projections extends from the second side of the body. The body, the teeth, and the projections are bisected by a common plane. A lifter is operable to move the driver blade from the BDC position toward the TDC position, and is engageable with the teeth. A latch assembly is movable between a latched state, and a released state. The latch assembly is configured to engage with the projections.

Abstract: A gas spring-powered fastener driver includes an outer cylinder, an inner cylinder positioned within the outer cylinder, and a moveable piston positioned within the inner cylinder. The gas spring-powered fastener driver further includes a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The outer cylinder and the inner cylinder define a first total volume in which gas is located when the driver blade is in the TDC position. The outer cylinder and the inner cylinder define a second total volume, in which gas is located when the driver blade is in the BDC position. A compression ratio of the second total volume to the first total volume is 1.7:1 or less. And, a force acting on the driver blade when located in the TDC position is at least 90 pound-force (lbf) but no more than 450 pound-force (lbf).