An explosive discharge actuated tool includes a piston disposed in a barrel to be driven by a combustion gas for exerting a striking power to strike a fastener out of the barrel. A power adjusting unit is disposed to adjust an opening area of an exhaust port for the combustion gas, and includes an adjusting pin movable longitudinally to completely or partially close the exhaust port so as to adjust the striking power, and an engaging block coupled to the adjusting pin through a latch spindle to be moved transversely to allow or prevent movement of the adjusting pin relative to the exhaust port.

A noise reduction nailer and a speed adjusting assembly are described. The speed adjusting assembly may comprise a speed adjusting nut and a speed adjusting member matched with it. The speed adjusting member comprises a cover cap and a sear holder return spring fixed on the cover cap. Firing pins assembly with different heights are uniformly provided on a side wall of the sear holder return spring. The speed adjusting nut is composed of two speed adjusting rings with different diameters. A firing pin spring is provided on an inner side wall of the large-diameter speed adjusting ring and the large-diameter speed adjusting ring is adapted to the sear holder return spring. The speed adjusting assembly can adjust the shooting power of the nailer for different base bodies, and can use a steel ball to act on a small head cone of a pawl to automatically reset the pawl.

An explosive discharge actuated tool is used with a multi-cartridge strip for driving fasteners, and includes a tool housing, a firing module disposed within the tool housing and rearwardly of a firing position, and a trigger and cartridge advancing module coupled with the firing module such that turning of a trigger lever causes turning of a cartridge advancing lever to move the strip so as to move a next cartridge to the firing position during the cartridge detonation in the firing position.

Gas-operated fixing tool including a working chamber, a piston mounted slideably in the working chamber and comprising a driving rod of which a first longitudinal end is configured to drive a fixing element and of which a second longitudinal end is connected to a head which separates the working chamber into a first portion and into a second portion which is traversed by the rod, and at least one combustion chamber in which a mixture of air and fuel is intended to be burnt in order that combustion gases generate a rise in pressure that causes a movement of the piston in the working chamber, wherein the at least one combustion chamber is in fluid communication with the second portion in such a way that the rise in pressure causes the movement and the return of the piston into a rest position ready for firing a fixing element.

Gas-operated fixing tool including a working chamber, a piston mounted slideably in the working chamber and comprising a driving rod of which a first longitudinal end is configured to drive a fixing element and of which a second longitudinal end is connected to a head which separates the working chamber into a first portion and into a second portion which is traversed by the rod, and at least one combustion chamber in which a mixture of air and fuel is intended to be burnt in order that combustion gases generate a rise in pressure that causes a movement of the piston in the working chamber, wherein the at least one combustion chamber is in fluid communication with the second portion in such a way that the rise in pressure causes the movement and the return of the piston into a rest position ready for firing a fixing element.

A powder-actuated tool includes a barrel assembly, a housing, a firing pin device, and a piston assembly. The barrel assembly includes an outer tube, an inner tube movably extending into the outer tube, and a powder chamber. The piston assembly includes a pushing rod and a sleeve member sleeved on the pushing rod in a form-fitting manner. The pushing rod has a main body, a tail section having an outer diameter greater than that of the main body, and a shoulder section connected between the main body and the tail section. The powder-actuated tool further includes a bonding material connected between the pushing rod and the sleeve member.

The present invention is concerned with improvements to removable fasteners and is particularly related to removable and re-usable fasteners for use in wet-fit applications, such as joining components that include a sealant or adhesive. A dowelling fastener (200) is provided having a head end and an insertion end and a cylindrical dowelling portion, wherein the fastener is provided with a plunger (204) at the insertion end for clearing material from a hole as the fastener is inserted into the hole, wherein the plunger is rigid and has a circular cross section with a diameter substantially the same as the dowelling portion of the fastener, the plunger tip thereby being a close fit with the hole. The plunger of the present invention is intended specifically for clearing materials from the bore and therefore has other features optimised for this purpose, including ridges around its periphery.

The present invention is concerned with improvements to removable fasteners and is particularly related to removable and re-usable fasteners for use in wet-fit applications, such as joining components that include a sealant or adhesive. A dowelling fastener (200) is provided having a head end and an insertion end and a cylindrical dowelling portion, wherein the fastener is provided with a plunger (204) at the insertion end for clearing material from a hole as the fastener is inserted into the hole, wherein the plunger is rigid and has a circular cross section with a diameter substantially the same as the dowelling portion of the fastener, the plunger tip thereby being a close fit with the hole. The plunger of the present invention is intended specifically for clearing materials from the bore and therefore has other features optimised for this purpose, including ridges around its periphery.

Gas fixing tool, including at least one combustion chamber, a trigger, a device for injecting fuel into the at least one chamber, a member for actuating the device, and a bearing member intended to be brought to bear on a support material, characterized in that it further comprises a safety member configured to cooperate on the one hand with the actuating member and on the other hand with the trigger, so that the trigger is locked in its first position when the actuating member is in a first position.

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.