Abstract:
A fastening device (10) for driving a fastener (33) into a workpiece by effecting multiple blows upon the fastener comprises a housing (12) and a striker assembly (30) movably mounted within the housing (12). The striker assembly (30) includes a driver assembly adapted to strike the fastener (33) to be driven into the workpiece. A nose assembly (16) is movably mounted on the housing (12) and has a fastener drive track (14) along which the driver assembly and the fastener (33) travel when the fastener (33) is driven into the workpiece. The fastening device (10) has a feed mechanism (90) operatively connected to the nose assembly (16) for mechanically advancing the fastener (33) into the fastener drive track(14). The fastener drive track (14) has a guide surface adjacent the aperture of the nose assembly to direct the fastener (33) as it is driven into the workpiece. A releasable fastener assembly releasably secures the nose assembly (16) to the housing (12) of the fastening device. A control assembly controls the operation of the fastening device to conserve energy. A coil of collated roofing nails (34) is adapted for use with the fastening device (10). Each of the nails of the coil of collated roofing nails is coated with a thermoplastic material that serves as a lubricant which facilitates driving of the nails.
Abstract:
A fastener driving tool (10) includes a power source (14) including a reciprocating driver blade (24), a tool nose (30) associated with the power source for receiving the driver blade for driving fasteners (26) fed into the nose, a magazine (32) constructed and arranged to house a supply of the fasteners, a magazine feeder mechanism (50) associated with the magazine for sequentially feeding fasteners into the nose, the feeder mechanism including a reciprocating feed piston (58), and an electromechanical retention device (110) that is operationally associated with the feeder mechanism (50) and configured for retaining the feed piston (58) in a retracted position until the driver blade is positioned to allow fastener advancement into the nose.
Abstract:
Fastener-advancement systems comprise a multiple lever and linkage mechanically operated system operatively connected to the driver blade member of the fastener driving tool, as well as electro-mechanically operated systems, for advancing a leading fastener of a collated strip of fasteners into the driver blade channel of the fastener-driving tool . In the electro-mechanically operated systems, push-type, pull-type, and rotary solenoid actuating members are utilized for moving the fastener-advancement feed pawl or claw member.
Abstract:
Die vorliegende Erfindung offenbart eine Zuführvorrichtung, einen Zuführkanal und ein Setzgerät, das in Verbindung mit diesen speziellen Vorrichtungen eingesetzt wird. Die Zuführvorrichtung nutzt entweder ein Streifenmagazin 10 oder ein Rotationsmagazin 20. Die Zufuhr der Befestigungselemente läuft schrittweise mit Hilfe eines bewegbaren Schlittens 30 ab, während bei Einsatz des Rotationsmagazins 20 ein gleichzeitiges Laden und Entladen des Rotationsmagazins 20 an unterschiedliche Positionen gewährleistet ist.
Abstract:
A fastener-driving tool (10) includes an integrated function member (50) that performs at least two of the following three functions: a check pawl function, a last fastener-retaining function, and a dry fire lock-out function. In the disclosed embodiment, the integrated function member is provided as a lever-type structure that constitutes part of the access door assembly by means of which access is gained to the fastener drive track (31) along which fasteners (e.g., roofing nails) are fed to the driving portion of the tool. Also disclosed is an improved method of retaining the last nail in the drive track by a lateral head gripping action and a tool for performing the method.
Abstract:
A fastener driving tool includes a power source including a cylinder, a piston with a driver blade reciprocating in the cylinder, a tool nose associated with the power source for receiving the driver blade for driving fasteners fed into the nose, and a magazine housing a supply of the fasteners. A magazine feeder mechanism is associated with the magazine for sequentially feeding fasteners into the nose, and the feeder mechanism includes a reciprocating feed piston. A conduit is connected between a port in the cylinder and the feed mechanism for diverting combusted gas for activating the feed piston. The port is disposed in the cylinder a specified distance below a piston prefiring position, and the distance is reflective of a delay of feeding the gas to the feed piston at least until engagement between an end of the driver blade and a head of a fastener in the tool nose.