Abstract:
A combustion-powered fastener-driving tool that include a chamber member retainer assembly configured to enable the controller of the tool to prevent the chamber member of the tool from moving to an open unsealed position and to ensure the tool's combustion chamber remains sealed until the piston fully returns to its pre-firing position.
Abstract:
A powered nailer (10) includes a power source (12) including a driving element (16) reciprocating within a cylinder (14) between a pre firing position and a fastener driving position, the latter occurring when the driving element engages a bumper (20) disposed at the bottom (22) of the cylinder (14). A reciprocating valve element (40) defines a combustion chamber (30) in fluid communication with the cylinder (14), and is configured for receiving a dose of fuel and air prior to a user-generated ignition. A return chamber (52) at least partially surrounds the cylinder (14) and is in fluid communication with the cylinder (14), being configured for receiving a supply of pressurized air generated by the driving element (16) as it moves from the prefiring position to the fastener driving position, the pressurized air acting on an underside of the driving element (16) for returning it to the pre-firing position.
Abstract:
A combustion-powered fastener-driving tool includes a combustion-powered power source having a combustion chamber, a reciprocating piston and driver blade, and a valve sleeve reciprocable relative to the power source between a rest position and a firing position. The valve sleeve partially defines the combustion chamber. A lockout device is in fluid communication with the combustion power source and includes a reciprocating gas piston connected to a latch in operational proximity to the valve sleeve. The lockout device is configured such that upon combustion in the combustion chamber, gas from the combustion engages the gas piston and moves the latch to an engaged position in which the valve sleeve is prevented from moving to the rest position.
Abstract:
A fastener driving tool including a housing enclosing a cylinder having a lower end provided with a resilient bumper, a return air chamber in communication with the lower end of the cylinder and a piston dimensioned for reciprocation within the cylinder to impact the bumper at an end of the cylinder and having a driver blade depending therefrom for striking fasteners. At least one inlet opening is disposed in the cylinder and in communication with the return air chamber and at least one outlet opening is disposed in the cylinder and spaced from the at least one inlet opening. The at least outlet opening is in communication with the return air chamber and aligned with the piston so that each outlet opening is closed by the piston to seal the cylinder from air loss as the piston impacts the bumper and traps a residual volume of air in the sealed cylinder below the piston to damp impact of the piston upon the bumper.
Abstract:
A fastener driving tool trigger assembly comprising: a bottom assembly (200) including: a pivotable trigger (210) rotatably attachable to a housing of a fastener driving tool, an actuation lever (230) attachable to the pivotable trigger, an actuation lever spring (250) attachable to the actuation lever to bias the actuation lever to a first position, a ramp (270) attachable to the pivotable trigger, and a damper mechanism (290) attachable to the actuation lever to control a rate of movement of the actuation lever; and a top assembly including: a top housing attachable to the housing of the fastener driving tool, and a downwardly extending block engageable with the actuation lever and the ramp to move the actuation lever to a second position different from the first position. A fastener driving tool comprising: a tool housing; a workpiece contact element; and said trigger assembly.
Abstract:
Various embodiments of the present disclosure provide a combustion-powered fastener-driving tool including an engaging element that improves tool performance by frictionally engaging a piston upon its return to a pre-firing position, thereby reducing the likelihood that the piston will end up at a position other than the pre-firing position after completion of a fastener-driving cycle. In one embodiment, the fastener-driving tool comprises a cylinder, a driving assembly slidably disposed within the cylinder and movable from a pre-firing position to a firing position to drive a fastener into a workpiece, and an engaging element. The driving assembly includes an outwardly tapered engaging element contact surface, and the engaging element is positioned to engage the engaging element contact surface when the driving assembly is in the pre-firing position.
Abstract:
A fastener-driving tool (112) includes a housing (114) and a workpiece-contacting element (116) movable between a rest position and an activated position. The tool (112) also includes a trigger (136) connected to the housing (114) and movable between a rest position and an activated position, a control valve (122) including an actuating pin, an actuation lever (130) movably connected to the trigger (136) and movable between a rest position and an actuating position adjacent to the actuating pin, and a trigger control mechanism associated with the actuation lever (130) and configured for moving and holding the actuation lever (130) in the actuating position. In a powered mode, the trigger control mechanism causes the actuation lever (130) to move and remain in the actuating position such that the tool (112) is actuated each time the workpiece-contacting element (116) contacts a workpiece and moves to the activated position causing the actuation lever (130) to contact the actuating pin and initiate an actuation of the tool (112).
Abstract:
A fastener-driving tool comprising: a cylinder; a driver blade seal that defines a driver blade receiving opening; a driving element (200) including a driver blade (206); and a piston within and movable relative to the cylinder and the driver blade seal and that is attached to the driving element (200) such that the driver blade (206) is slidably received in the driver blade receiving opening, wherein the driver blade (206) has a non-uniform cross-section (WAl, WA2) such that a portion of the driver blade receiving opening occupied by the driver blade (206) changes as the piston moves relative to the cylinder from a first position to a second position.
Abstract:
A fastener-driving tool including a housing having an air connector, at least one of a power storage device and an electrical component associated with the housing and an electric motor assembly associated with the housing. The electric motor assembly includes a fan where air is supplied to the housing through the air connector and moves through the housing and contacts the fan to cause the fan to rotate, rotation of the fan causing the electric motor to generate electricity that is directed to the at least one power storage device and the electrical component.
Abstract:
A combustion-powered fastener-driving tool (10) includes a combustion-powered power source (14) including a cylinder head (42) and a combustion chamber (18) defined by the cylinder head, a valve sleeve (36) and an upper surface of a reciprocating piston (22), the valve sleeve reciprocable relative to the cylinder head between a rest position and a pre- firing position. The valve sleeve (36) has a range of positions between a first sealing position in which the combustion chamber (18) is closed, and said pre-firing position in which the valve sleeve is prevented from further movement. A lockout device (60, 90, 100, 110) is associated with the power source and has an actuated position configured for preventing the reciprocation of the valve sleeve beyond the first sealed position to open the combustion chamber, but permitting movement of the valve sleeve from the first sealed position to the pre-firing position until the piston returns to a piston pre-firing position post combustion.