Abstract: Each fastener comprises a shank pointed at one end and bearing a head at the other end, the fasteners are engaged respectively via their shanks in guide pegs (11) joined together into a string (20). At least one of the guide pegs at the end of the string (11′, 11″) comprises support means (14) designed to prevent it from tilting as it is transferred from the loading device into the apparatus.

Abstract: The sealing apparatus (100) is used in a substantially vertical position by the user, who inserts a magazine pack containing nails into the hopper (101). After unlocking of the hopper (101), the nails slide in the flexible feed tube (10) as far as the front of a feeder for indirect firing, in a buffer guide (102). The user then merely has to actuate a trigger (103) in order to entrain the nails into the support via the feeder. In order to preserve the transparent quality of the tube (10), its effective inner cross section (21) is not circular, but is arranged (23) such that the contact between the lateral wall of the circular head of the nail (1) and the effective inner wall (21) of the tube (10) is not possible on certain portions (22) of the effective inner wall (21).

Abstract: Compressed gas canister (1′) intended to supply gas to a fastening appliance (2) that runs on compressed gas, comprising a protective edge (12) forming a bowl inside which an ejection valve (16) having a bearing and displacement surface (26) is mounted so that it can move in translation between a position of rest and a gas-ejection position, the ejection valve (16) being mounted, inside a seal (3′), set back from the edge (15) of the bowl, and the bearing surface (26) of the valve (16) does not protrude beyond the edge (15) of the bowl in the position of rest and is set back from the surface (30) facing towards the outside of the seal (3′, 23) in the gas-ejection position.

Abstract: Connector for a male ejection end-piece (16) of a compressed-gas canister (1) intended to supply compressed gas to a fastening appliance that runs on compressed gas and a male inlet end-piece (4) of a device (2) for letting compressed gas into the appliance, comprising sealing means (3) for accommodating the two male end-pieces (16, 4) and intended to seal the connection between the two end-pieces along cylindrical sealing surface portions (34, 35).

Abstract: The strip comprises fasteners (1), each having a shank (2) which is pointed at one end (4) and bears a head (3) at the other end, these fasteners being respectively engaged by their shanks (2) in guide and damping blocks joined together in a string (8). The strip comprises a second guide string (9).

Abstract: The apparatus comprises a removable magazine for the supply of fasteners, designed to contain a strip of fastener-holding rings, a fastener-guide (3) and a unit (4) for shearing the strip of fastener-holding rings, and which is functionally a single unit. The shearing unit (4) and the fastener supply magazine are adapted to work together to house a skirt (11), integral with the shearing unit (4), forming a passage (12) for fastener input, in a reception compartment of the skirt (11).

Abstract: The apparatus comprises a removable magazine for the supply of fasteners, designed to contain a strip of fastener-holding rings, a fastener-guide (3) and a unit (4) for shearing the strip of fastener-holding rings, and which is functionally a single unit. The shearing unit (4) and the fastener supply magazine are adapted to work together to house a skirt (11), integral with the shearing unit (4), forming a passage (12) for fastener input, in a reception compartment of the skirt (11).

Abstract: A staple (4) for a delicate material (22) comprises two flexible legs (46, 47) between a head portion (56) connecting the legs and an introduction end portion (57). Between the head and end portions is located a discontinuity portion (58) so that when the staple is pushed into the material (22), at least one of the legs (46, 47) inclines with respect to the head portion (45) and thus ensures good resistance to extraction. The two legs (46, 47) are bent (76, 77) inwardly in the discontinuity portion (58) of the whole assembly to diverge from one another upon fixing the staple to the delicate material.

Abstract: The staple (41) for delicate material (22) comprises two flexible legs (46, 47) between a head portion (56) connecting the legs and an introduction end portion (57). Between the two portions, head and end, is located a discontinuity portion (58) so that when it is pushed into the material (22), at least one of the legs (46, 47) inclines with respect to the head portion (45) and thus ensures good resistance to extraction. The two legs (46, 47) are bent (76, 77) inwardly in the discontinuity portion (58) of the whole assembly to diverge from one another upon pushing it.

Abstract: The device for fixing a plug in a support (100), with a piston (6) propelled by compressed gas, comprises a cylinder (5) in which the piston (6) is mounted, a combustion chamber (3), a combustion chamber sleeve (4) intended to close the chamber (3) at the rear with a cylinder head (2) and at the front with the piston (6) and the cylinder (5), a plug guide (8) acting as a probe for placing in abutment and for closing the combustion chamber (3). A pushing surface (30) and an abutment surface (29), which are respectively fixedly attached to the plug guide (8) and to the sleeve (4), are arranged to be fixedly attached to each other in a rearward translational movement when the plug guide (8) is placed into abutment, in order to close the combustion chamber (3), and to become detached from each other upon recoil of the device in reaction to firing in order to ensure that the plug guide (8) is kept in abutment against the support (100).

Abstract: Apparatus comprising a barrel holder (2), a barrel (1) and an arm (4; 33) provided with a retractable holding finger (5) mounted on the barrel holder (2) to pivot about an axis (7) parallel to the axis (8) of the barrel holder by a ring (6) mounted to rotate on the barrel holder (2) about the axis (8) of the barrel holder (2), the arm (4; 33) provided with the retractable holding finger (5) allowing the barrel (1) to slide between a propellant charge loading position and a firing position.

Abstract: The apparatus comprises a plunger (13) designed to slide in a front portion (11) of the apparatus acting as a plug guide, for driving a plug and sealing it, then to be returned rearwardly to the firing position, with balls (18) for braking the plunger (13) which are mounted in recesses of the plug guide (11). By cooperation with the plunger (13), the balls (18) are driven radially towards the plunger (13) upon application of the apparatus and rearward sliding of the plug guide (11).

Abstract: The apparatus comprises along the riser (10) a return chamber with a front space (30) and a rear space (22) adapted to communicate with the combustion chamber (15) following a first displacement of the riser (10). Once the two spaces (30, 22) have been brought into communication with one another, they are separated from one another and the riser (10) is returned towards the rear in the barrel (9). The two spaces (30) and (22) communicate with one another during the displacement of the riser (10) and the rear space (22) is separated from, the front space (30) following a second forward displacement of the riser (10). As the rear space (22) communicates with the exterior of the apparatus, the expansion of the combustion gases trapped in the front space (30) then returns the riser (10) towards the rear into the firing position.The apparatus serves to fix components to a support material.

Abstract: The indirect-firing apparatus includes a combustion chamber for a cartridge (62), a trigger for igniting the cartridge, a barrel, an inertia block in the barrel, an anchor guide (7) designed to receive an anchor, a shuttle (34) in the anchor guide (7) mounted for movement from an anchor loading position to a position for firing and driving of the anchor, mechanisms (63, 11, 46) for displacement of the shuttle from one position to the other, and a barrel holder (61) for concomitantly controlling the closure of the combustion chamber (3) and means for displacement of the shuttle (34). The mechanisms (63, 11, 46) for displacement of the shuttle (34) are arranged so as to drive the shuttle (34) beyond the firing position (25). Damping components (33, 38), when the shuttle (34) has reached its firing position (25), absorb the action of the displacement mechanisms (63, 11, 46).

Abstract: Method and assembly for fixing a surfacing stabilising mesh and a piece for holding the fixing assembly. According to the method for fixing a mesh formed by interlaced strands (5) to a supporting material (3) after laying the mesh on the supporting material (3), the first wings (4) of the holding pieces with two wings (4, 6) are passed underneath the strands (5) of the mesh, the pieces being closed around the strands (5) and secured to the supporting material (3) by anchoring in the material (3), by means of an anchoring appliance, a single fixing component (2) for forming holding lugs (7) from the pieces (1) and securing the assembly to the supporting material (3).

Abstract: The apparatus comprises a barrel (1), a plunger (4) movable in the barrel for driving a fixing element (6), a plunger return catch (9), an element guide (21) mounted pivotably at the front of the barrel in order to load an element (6) therein from the rear to the front. The guide (21) is movable in axial translation relative to the barrel (1) and can move back into the firing position towards the barrel (1) and cover the front end of the recess (13) of the plunger (4), in order to then cover the head (14) of a fixing element (6) previously introduced into the guide (21).The apparatus of the invention is well adapted to the application of plugs in steel or concrete materials.

Abstract: A marking device is provided so as to be movably mounted upon the mouth or open end of the barrel (1) of an explosive or propulsive driving apparatus. It comprises a flexible case (11) fixed upon an anvil (10) which is intended to transmit the energy of the piston (4) of the apparatus to a series of punches (14) disposed within the case and whose stroke is controlled by means of a damping pad (19) which is resiliently deformed during marking.