Societe De Prospection Et D'inventions Techniques Spit

Illinois Tool Works Inc.

Frederic Nayrac

Patrick Herelier

Cyril Marion

Bruno Toulouse

Roland Almeras

Alain Vettoretti

Pierre Cordeiro

Larry M Moeller

Hanxin Zhao

Christian Ricordi

Jean-Luc Simonin

Guy Jaillet

Pascale Grandjean

Ludovic Rousson

Jean-Michel Dreveton

Jean Michel Dreveton

Various embodiments of the present disclosure provide a gas-powered fastener-driving tool. In one embodiment, the tool includes a combustion or precombustion chamber a valve comprising a body that is mobile within the combustion or precombustion chamber between a first closed position and a second open position. The body defines two opposing orifices at longitudinal ends of the body. The orifices form part of a bore defined through the body that enables gas to pass through the valve. This makes it possible to limit the pressure drops as gas is being admitted to or exhausted from the chamber, thus making it possible to optimize the duration of the firing cycle of the tool.

Combustion chamber for a gas-powered fixing tool

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.

Fuel cartridge for a gas-powered fixing tool and a gas-powered fixing tool having such a cartridge

The present disclosure concerns a method and an electronic ignition control device of a combustion chamber of a gas-powered fixing tool designed to optimize the quality of the shooting of fixation elements by the tool. According to the principle of the present disclosure, the triggering of the ignition of the chamber to produce the shot is commanded on the condition that the time between the moment when the user places the tool against a work surface and the moment when he pulls on an actuation trigger of the tool is greater than a predefined delay time, to ensure an optimal filling of the combustion chamber with the combustible gas. According to one embodiment of the present disclosure, the triggering of the ignition is enabled on the supplemental condition that a signal of medium ignition voltage is greater than a trigger threshold voltage.

Method for controlling the actuation of a gas-powered fixing tool and the corresponding device

A combustion nailer includes a tool housing, and a combustion engine substantially located within the housing and including a valve sleeve reciprocating relative to a cylinder head for cyclically opening and closing a combustion chamber. A control system is associated with the housing and is connected to the combustion engine for providing for a designated open time for the combustion chamber after a combustion event and before a subsequent combustion can occur.

Recharge cycle function for combustion nailer

The adapter comprises a central tubular body extending on one side with an abutment and fixing base on the cartridge and, on the other side, with two fixing legs on an intermediary nose piece of the transmission and filling member able to be hinged for ensuring the fixing operation, disconnecting and ejecting wings being additionally provided. The disconnecting and ejecting wings are arranged for opening the fixing legs before driving them into translation.

Gas cartridge adapter for fixing the same to a transmission and combustion chamber filling member of a gas fixing device and for disconnecting the same from the member

The adapter is designed to receive an outlet end () of the cartridge () and an inlet end () of the induction device (), as well as a seal () between the two ends (). The seal () includes an annular transverse portion () intended to be interposed between the two ends () and the material of the seal () is selected from the group consisting of compressible and flexible materials.

Connecting adapter for a gas cartridge and a gas induction device of a gas fastening apparatus, the cartridge, the solenoid valve and the apparatus with the adapter

The housing is intended to receive a source introduced by means of its head and pushed into a position ensuring good transmission of energy. The housing includes a mechanism for converting a transverse movement towards the interior of the housing imparted by a pusher element of the mechanism accessible from the exterior of the housing into an orthogonal movement for ejection of the source.

Housing for an energy source in a hand-operated device having a mechanism for ejecting the source

In the assembly of the invention, the assembly includes adapter means designed to connect the transmission member and the energy source and to ensure good transmission of energy between them. The adapter means comprise means for locking the energy source in rotation in the device and means for the angular indexing of the source in the position in which it is locked in rotation in the device. The invention is very suitable for gas fastening devices.

Assembly of an energy transmission member for a hand-operated device and an energy source having means for the locking in rotation and angular indexing of the source

A fastening element driving apparatus includes a barrel for receiving a fastening element, and a handle for attaching a removable magazine which feeds fastening elements to the barrel. A forward part of the apparatus is arranged to cooperate with a supply end of the magazine and ensure that a fastening element is transferred from the magazine into the barrel. A free end of the handle away from the barrel carries a rod for fixing another, loading end of the magazine thereto. The fixing rod is pivotable to alter a relative position between the free end of the handle and the loading end of the magazine.

Fastening driving tool with pivotally mounted magazine and magazine therefor

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

Gas fastening apparatus having an internal combustion engine and gas induction device connected by a flexible tube

The gas-operated fixing device comprises an internal combustion engine for driving fasteners, arranged in a case () fitted in a handle () and fixed to it at the rear (--). The front () of the case () is fitted floating in the handle () so as to be able to slide in it along the drive axis () of the fasteners. To be more specific, the case () and the handle of the device (-) are fixed to each other by tenon () and slot () assemblies.

Gas combustion operated fastener driving tool with casing floating at the front end

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.

Gas-operated apparatus for driving an element using a piston

An inserting device () of an assembly () includes a wall-plug guide () and a contact foot (). The boot () has a head () pierced by a through hole () for the wall-plug guide (), a stock () provided with stiffeners (), and a foot () pierced by a through hole () for the contact foot (). The through hole () of the wall-plug guide () and the through hole () of the contact foot () act in combination to keep the boot () on the device ().

Assembly of a boot and an inserting device

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).

Fixing device with a piston propelled by compressed gas

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).

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Bourg les Valence, France

Frederic Nayrac