A fastener driver comprises a drive blade movable from a retracted position to an extended, driven position for driving a fastener into a workpiece and a gas spring mechanism for driving the drive blade from the retracted position to the driven position. The gas spring mechanism includes a drive cylinder and a drive piston attached to the drive blade for movement therewith. The drive piston is acted on by a driving force resulting from a pressure differential created by the gas spring mechanism. The fastener driver also includes an adjustable valve for selectively limiting a flow of gas into the drive cylinder above the drive piston, or a flow of ambient air at atmospheric pressure from the drive cylinder beneath the drive piston, thereby changing the pressure differential acting on the drive piston, as the drive piston and the drive blade move from the retracted position to the extended position.

A fastener driver comprises a drive blade movable from a retracted position to an extended, driven position for driving a fastener into a workpiece and a gas spring mechanism for driving the drive blade from the retracted position to the driven position. The gas spring mechanism includes a drive cylinder and a drive piston attached to the drive blade for movement therewith. The drive piston is acted on by a driving force resulting from a pressure differential created by the gas spring mechanism. The fastener driver also includes an adjustable valve for selectively limiting a flow of gas into the drive cylinder above the drive piston, or a flow of ambient air at atmospheric pressure from the drive cylinder beneath the drive piston, thereby changing the pressure differential acting on the drive piston, as the drive piston and the drive blade move from the retracted position to the extended position.

A pneumatic fastener driving tool includes a gas cylinder, and a piston disposed in the cylinder in such a way that a centerline of the piston is coaxial with the cylinder longitudinal axis, and the piston is movable along the cylinder longitudinal axis between ready and driven positions. The tool includes a blade having a blade first end that is connected to the piston, and a blade second end that is configured to contact a fastener during a fastener driving operation. The tool includes a reset mechanism that returns the tool to the ready to fire configuration by translating the piston along the cylinder longitudinal axis to a location in which gas is compressed in the cylinder. The reset mechanism includes a ball screw device that drives the piston toward the ready position via a force that is concentric with the centerline of the piston.

A method of operating a fastener driver comprises initiating a fastener driving operation by moving a driver blade from a retracted position toward a driven position, and detecting that the driver blade has become jammed in an intermediate position between the retracted position and the driven position. The method further includes moving a latch from a locked position, in which a lifter assembly is maintained in an engaged position by the latch for moving the driver blade from the driven position toward the retracted position, to a released position, in which the lifter assembly is movable away from the driver blade. The method further includes driving a motor to rotate a lifter of the lifting assembly, thereby moving the lifter assembly away from the driver blade, then, returning the lifter assembly to the engaged position, and moving the latch from the released position to the locked position.

A method of operating a fastener driver comprises initiating a fastener driving operation by moving a driver blade from a retracted position toward a driven position, and detecting that the driver blade has become jammed in an intermediate position between the retracted position and the driven position. The method further includes moving a latch from a locked position, in which a lifter assembly is maintained in an engaged position by the latch for moving the driver blade from the driven position toward the retracted position, to a released position, in which the lifter assembly is movable away from the driver blade. The method further includes driving a motor to rotate a lifter of the lifting assembly, thereby moving the lifter assembly away from the driver blade, then, returning the lifter assembly to the engaged position, and moving the latch from the released position to the locked position.

A clinch staple mechanism including a pivoting base configured to be pivotally connected to a pneumatic stapling tool. The pneumatic stapling tool is configured to dispense staples each staple having a crown and a pair of staple legs, wherein the crown is disposed in a crown direction. The clinch staple mechanism further includes a clinch arm pivotally connected to the pivoting base at a proximal end of the clinch arm; and a clinch block disposed on a distal end of the clinch arm, wherein the clinch block is configured to bend the staple legs in a direction perpendicular to the crown direction.

A clinch staple mechanism including a pivoting base configured to be pivotally connected to a pneumatic stapling tool. The pneumatic stapling tool is configured to dispense staples each staple having a crown and a pair of staple legs, wherein the crown is disposed in a crown direction. The clinch staple mechanism further includes a clinch arm pivotally connected to the pivoting base at a proximal end of the clinch arm; and a clinch block disposed on a distal end of the clinch arm, wherein the clinch block is configured to bend the staple legs in a direction perpendicular to the crown direction.

A tool for fastening an insulator to a support, the insulator including an insulator body having a front and back, a formation for supporting a barrier, and at least one mounting formation having a front and a back by which the insulator is attached to a support, the back of the mounting formation in use being proximal to the support, at least one of the at least one mounting formation including at least one passage extending transversely through the mounting formation from the front to the back of the mounting formation, and at least one alignment member, the tool including a driver blade for driving a staple, and at least one passage alignment member, in use the at least one passage alignment member aligning at least one passage of the insulator, with one leg of a staple.

A fastener driver includes a main housing, a drive blade movable from a retracted position to a driven position for driving a fastener into a workpiece, and a gas spring mechanism for driving the drive blade from the retracted position to the driven position. The gas spring mechanism includes a piston movable between a retracted position and a driven position. The fastener driver also includes an extensible cylinder for moving the drive blade from the driven position toward the retracted position. The extensible cylinder includes a cylinder housing coupled one of the main housing or the drive blade, and a rod coupled to the other of the main housing or the drive blade. A vacuum is created in the cylinder housing for biasing the drive blade toward the retracted position.

A fastener driver includes a main housing, a drive blade movable from a retracted position to a driven position for driving a fastener into a workpiece, and a gas spring mechanism for driving the drive blade from the retracted position to the driven position. The gas spring mechanism includes a piston movable between a retracted position and a driven position. The fastener driver also includes an extensible cylinder for moving the drive blade from the driven position toward the retracted position. The extensible cylinder includes a cylinder housing coupled one of the main housing or the drive blade, and a rod coupled to the other of the main housing or the drive blade. A vacuum is created in the cylinder housing for biasing the drive blade toward the retracted position.