Various embodiments of the present disclosure provide a fuel cartridge for a gas-powered fastener-driving tool. In one embodiment, the fuel cartridge comprises a body that has a longitudinal axis and that defines an internal fuel storage cavity. The body is shaped and sized to be inserted at least partially into and removed from a housing defined by a case of the tool via translation along the longitudinal axis. The cartridge also includes a connection and fuel dispensing end fitting connected to the body and sized and shaped to engage an end fitting of the tool within the housing. The cartridge also includes a first cam surface extending at least partially around the longitudinal axis and configured to, during relative rotation of the first cam surface and a second cam surface, engage the second cam surface to facilitate removal of the fuel cartridge from the housing.

A powered fastener driving tool such as a powder-actuated tool including a housing assembly including a side wall having a first outer section, a raised section, and a recessed section, the raised section including a rim that extends in an outermost plane of a side wall of the housing and a spring-loaded slidable power setting switch partially positioned in and partially extending from the housing. The spring-loaded slidable power setting switch includes a depressible button movable from a resting position in which an outer surface of the button extends outwardly beyond the plane in which the outer surface of the rim lies to a depressed position in which the outer surface of the button extends in a same or substantially same plane in which the outer surface of the rim lies.

Various embodiments of the present disclosure provide a powered fastener driving tool with an auto ignition assembly. In certain embodiments, the tool includes a housing containing a combustion chamber, a removable fuel container configured to communicate fuel into the combustion chamber, a removable oxidizer container configured to communicate an oxidizer into the combustion chamber, a piston and a fastener driving blade connected to the piston and configured to engage and drive fasteners upon the fuel and the oxidizer chemically reacting in the combustion chamber. In certain embodiments, the auto ignition assembly includes a catalyst in the combustion chamber for causing, enhancing, or accelerating the reaction between the fuel and the oxidizer.

An improved tool for installing an explosively driven fastener as well as an improved explosively driven fastener for use therewith are disclosed. The fastener includes a nail having a head with an explosive load attached thereto in a plastic cap that includes a buffer. The tool has a plurality of concentric cylinders and springs including a muzzle for receiving the fastener head and explosive load. A spring actuated firing pin ignites the load causing it to explode and drive the nail out of the tool. The explosion also automatically resets the tool. The tool and the fastener provide many advantages over existing explosively driven fasteners and the tools used to install them.

A powder actuated tool is used for driving a fastener along a striking path line in a longitudinal direction into a wall surface, and is adapted for loading therein a cartridge strip. The powder actuated tool has a smaller width than a length between a leading edge of a first loading one of cartridges and a trailing end of the cartridge strip.

A fastener gun or nail gun utilizes a propellant cartridge having a centerfire primer made from thermite. The thermite is made from alternating layers of metal oxide and reducing metal, and includes one or more layers of carbide-containing ceramic. The primer ignites a propellant which may be a conventional single base or double base smokeless powder, or which may be thermite having a structure similar to the thermite of the primer. The primer may be initiated mechanically or electrically. The fastener gun is capable of applying a level of force similar to the force applied by conventional propellant cartridges, while avoiding inhalation of lead particles by the operator of the fastener gun.

A powder-driven connecting tool for connecting power lines is disclosed, as are assemblies and replacement parts for such a tool. The tool includes a tool head with an anvil, and a power unit with a ram. A breech cap assembly connects to the power unit and includes a sleeve threaded on both ends and a cap threadedly mounted on one end of the sleeve. The sleeve and cap define a breech for a powder charge. An adapter is mounted on an outer end surface of the cap. The adapter is narrower than the cap itself and is adapted to be driven by a power tool in order to tighten and loosen the cap and the sleeve. The adapter may, for example, have the form of a hex nut.

A device for driving fastening elements into a substrate, having a combustion chamber in which a fuel can be burned for the purposes of transmitting energy to a fastening element, having a cartridge bearing which has a receiving chamber for a cartridge which contains the fuel, which receiving chamber is open in an opening direction toward the combustion chamber, having a closure which, in a closed position of the closure, closes the receiving chamber counter to the opening direction and bears against the cartridge bearing, and having a strip leadthrough, which defines a transport direction and opens into the receiving chamber, for a cartridge strip which bears the cartridge.

Various embodiments of the present disclosure provide a powered fastener driving tool with an auto ignition assembly. In certain embodiments, the tool includes a housing containing a combustion chamber, a removable fuel container configured to communicate fuel into the combustion chamber, a removable oxidizer container configured to communicate an oxidizer into the combustion chamber, a piston and a fastener driving blade connected to the piston and configured to engage and drive fasteners upon the fuel and the oxidizer chemically reacting in the combustion chamber. In certain embodiments, the auto ignition assembly includes a catalyst in the combustion chamber for causing, enhancing, or accelerating the reaction between the fuel and the oxidizer.

A powered fastener driving tool such as a powder-actuated tool including a housing assembly including a side wall having a first outer section, a raised section, and a recessed section, the raised section including a rim that extends in an outermost plane of a side wall of the housing and a spring-loaded slidable power setting switch partially positioned in and partially extending from the housing. The spring-loaded slidable power setting switch includes a depressible button movable from a resting position in which an outer surface of the button extends outwardly beyond the plane in which the outer surface of the rim lies to a depressed position in which the outer surface of the button extends in a same or substantially same plane in which the outer surface of the rim lies.