Abstract: The sealing connector ensures sealing between a gas cartridge having an outlet fitting and a transmission member for filling a combustion chamber of a gas fastening device having an inlet fitting with gas and includes two internal sealing sleeves for receiving the two fittings, at least one of which is made of flexible material, with, at the bottom of this sleeve, a flexible transverse annular partition for dimensional adjustment, and an external slide. A rigid transverse annular partition is provided at the bottom of the other of the two sleeves to serve as a support for a fitting.

Abstract: According to the process, which relates to a manually-activated portable device with indirect firing by a drive piston which comprises among other things a means of propelling the piston and a means of damping the piston, usage data from the device is used and the device is adapted to this data. The device comprises a means for detecting the impact of piston against the means of damping.

Abstract: The apparatus includes a handle (1) with a gas cartridge housing and the gas induction device (4) designed to be mounted on the cartridge and connected to the engine. The engine and the induction device (4) are connected by a flexible tube mounted on the induction device side on an end fitting (6) designed to be engaged in a base (7) of the induction device and to cooperate with means (15, 17) of the handle (1) of the apparatus designed to push the connector (6) against the induction device (4).

Abstract: The apparatus comprises of a barrel and means (3, 5) of driving a fastening element in the barrel, a handle (9) which includes means (25, 33) for receiving a removable feed magazine (4) for fastening elements, in which the forward part (3) of the apparatus is arranged to cooperate with a feed end (55) of the magazine (4) and to ensure that a fastening element is transferred from the magazine (4) into the barrel (1), with the free end (33) of the handle (9) away from the barrel being arranged so that the other loading end (54) of the magazine (4) may be secured thereto. The free end (33) of the handle (9) carries a fixing rod (47) for the aforementioned loading end (54) of the magazine (4), with the rod (47) being fitted so that it pivots and alters the relative position of the free end of the handle (33) and of the loading end (54) of the magazine. There is compensation for all dimensional tolerances thanks to this invention.

Abstract: The indirect fire device for fixing fasteners (13) in a substrate material of the invention comprises a piston for driving a fastener (13) movably mounted in a barrel and a plug guide (11) for guiding a fastener (13) towards the substrate material. The device is adapted to receive a magazine (19) for receiving a strip (14) of fasteners (13) in order to introduce the fasteners (13) one by one into the plug guide (11). Each fastener (13) is held in a sleeve comprising bridges (16) for connection to another sleeve (15). The plug guide (11) of the device includes a zone having an enlarged circular section (21) at the opening of the magazine (19) leading into the plug guide (11), extending axially over the length (h) of a sleeve (15) increased by the stroke of the plug guide (11) for loading the device (L-L?).

Abstract: The tool includes a cylinder inside of which is slidably mounted a piston for driving a fastening element, as a result of the explosion inside of a combustion chamber of a mixture of gas and air that has been injected therein from a gas cartridge, after which the tool has come to bear weight against a support, the head switch has retracted and the combustion chamber has closed, followed by actuation of the trigger switch for controlling the spark plug. The tool also includes an element for determining the rate of fire which includes a real-time clock designed to cooperate with a microcontroller of an operating and control module. The arrangement applies well to fastening tools.

Abstract: The system includes, inside the tool, an electronic module for locking/unlocking the tool, in order to block or authorise its use and, inside a control station, a control module for the tool's locking/unlocking module designed to switch it from the locked state (i1) to the unlocked state (I0). The system applies well to tools for sealing, nailing and other similar applications.

Abstract: The gas-operated fixing device comprises an internal combustion engine for driving fasteners, arranged in a case (9) fitted in a handle (13) and fixed to it at the rear (14-17, 56, 21-24). The front (91) of the case (9) is fitted floating in the handle (13) so as to be able to slide in it along the drive axis (20) of the fasteners. To be more specific, the case (9) and the handle of the device (11-13) are fixed to each other by tenon (49, 50) and slot (47, 48) assemblies.

Abstract: A connection arrangement for transferring gas from a compressed gas cartridge, has a valve element configured to control the release of gas from the cartridge; a male outlet which is integral with the valve element; a male inlet of a gas receiver for a tool that runs on compressed gas; and a connector receiving and connecting the male inlet and outlet. The connector is a tubular housing having a through hole extending from one end to the other. An inner wall of the housing contacts side surfaces of the male outlet and inlet in a sealing manner. The connector also has, in a middle region, transverse sealing surfaces that contact the end faces of the male outlet and inlet. The diameter of the through hole in this middle region is the same as the inner diameters of the openings in the ends of the male inlet and outlet.

Abstract: A screw anchor includes a roughly cylindrical body (1) with a drilling portion (3) provided, at its free end, with drilling teeth (14-16), at the other end of the body, a bearing flange (5) and an external screw thread (7). The drilling portion (3) is configured as a portion of a drill bit.

Abstract: The apparatus includes a handle (1) with a gas cartridge housing and the gas induction device (4) designed to be mounted on the cartridge and connected to the engine. The engine and the induction device (4) are connected by a flexible tube mounted on the induction device side on an end fitting (6) designed to be engaged in a base (7) of the induction device and to cooperate with means (15, 17) of the handle (1) of the apparatus designed to push the connector (6) against the induction device (4).

Abstract: The invention relates to a method of fastening a guard rail (60) to a concrete slab (100) by means of a self-expanding and self-undercutting bolt (1, 1?, 1?) comprising a dowel (10) having expanding lugs (17) and an expansion core (20, 23), the method comprising a phase consisting in drilling a hole (103?, 103?) in the slab, a phase consisting in driving the bolt in to a desired depth (E1+E2) independent of the depth of the hole, a dynamic tightening phase (h) resulting in the formation of the undercut and a static tightening phase of the guard rail. The guard rail bolt comprises the dowel (10) and a counter-dowel (20). The dowel (10) comprises at its fastening end (11) a guard rail fastening head (13) rigidly connected at its screwing end (12) by means of incipient fracture means (15) to a ring (16) provided with expansion lugs (17).

Abstract: The suspension plate is divided into a plurality of adjacent functional portions (2, 13, 24), including a fixing portion (2), the said portions each being separated from another by a bending zone (10, 15) to be folded back in pairs one towards the other. One of the bending zones (10) is weakened by at least one notch (11, 12) for reception of a flexible strand (25). The invention is applied, in particular, to the suspension of false ceilings.

Abstract: Assembly consisting of a hand-held tool (3) and an attachment comprising a loop (4) designed to be threaded on to a belt (2) and provided with a catch finger (5) for the tool (3), the tool being designed to hook on to the finger (5) in the operating position before being able to swing under its own weight into a position in which locking means (12, 13) prevent it from becoming unhooked from the finger (5). The invention is particularly suitable for fastening tools.

Abstract: According to the invention, which applies to a gas-operated apparatus comprising a first chamber for the precompression of a combustible gas injected thereinto and generation of a flame, and a second, propulsion, chamber, and placing elements, the two chambers in communication, these elements being designed to allow the flame to pass, the power of the apparatus is adjusted by adjusting the communication between the two chambers. The volume of gas injected directly into the propulsion chamber can also be adjusted. Alternatively, the rotational speed of the fan with which the first chamber is equipped can be adjusted.

Abstract: A pole has, at one end, a tool-securing device, a linkage for operating the tool, a sleeve for operating the tool which is designed to slide along the pole, and an arrangement for securing the operating sleeve to the linkage which runs inside a tubular element. The operating sleeve comprises a securing wedge that lies through a window formed in the tubular element and through which the linkage runs.

Abstract: In the apparatus, under the action of the explosion of a mixture of air and gas in a chamber closed by a chamber sleeve tube and a cage when the apparatus is pressed against something, a piston is propelled in a cylinder to drive an element. The chamber sleeve tube and the cylinder are arranged in such a way that, as the apparatus is closed, the chamber sleeve tube comes into abutment against the cylinder. The invention can well be applied to nail guns and other staplers.

Abstract: The apparatus comprises: a first chamber for the precompression of a combustible gas and generation of a flame, a second propulsion chamber, and placing elements, the two chambers in communication, these elements being designed to allow the flame to pass. There is an intermediate third chamber for the compression and acceleration of the flame, connecting the first and second chambers. The invention is neatly applicable to sealing apparatuses with a propulsion piston.

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

Abstract: A connection arrangement for transferring gas from a compressed gas cartridge, has a valve element configured to control the release of gas from the cartridge; a male outlet which is integral with the valve element; a male inlet of a gas receiver for a tool that runs on compressed gas; and a connector receiving and connecting the male inlet and outlet. The connector is a tubular housing having a through hole extending from one end to the other. An inner wall of the housing contacts side surfaces of the male outlet and inlet in a sealing manner. The connector also has, in a middle region, transverse sealing surfaces that contact the end faces of the male outlet and inlet. The diameter of the through hole in this middle region is the same as the inner diameters of the openings in the ends of the male inlet and outlet.