Hilti Aktiengesellschaft

Norbert Heeb

Sybille Renner

Markus Sprenger

Tilo Dittrich

Thomas Sperrfechter

Dominik Schmidt

Peter Bruggmueller

Jens Neumann

Markus Frommelt

Gerhard Ehmig

Arno Mecklenburg

Peter Stauss-Reiner

Daniel Jung

Norbert Pfister

Chafic Abu Antoun

Norbert Welte

Mario Scalet

Emanuel Kurth

Thorsten Sauer

Stefan Bönig

Markus Woerner

Franz Büchel

Thomas Demharter

Hermann Kuel

Philipp Heinze

Kai Friewald

Edwin Staudacker

A setting tool for driving fastening elements into a substrate is provided, the setting tool comprising a holder, which is provided for holding a fastening element, a drive-in element, which is provided for transferring a fastening element held in the holder into the substrate along a setting axis, a drive, which is provided for driving the drive-in element toward the fastening element along the setting axis, wherein the drive comprises an electrical capacitor, which is arranged on the setting axis or around the setting axis.

Setting tool

A setting tool for driving fastening elements into a substrate comprises a holder for holding a fastening element; a drive-in element for transferring a fastening element held in the holder into the substrate along a setting axis; and, a drive for driving the drive-in element toward the fastening element along the setting axis, wherein the drive comprises an electrical capacitor; a squirrel-cage rotor arranged on the drive-in element; and, an excitation coil, which during rapid discharge of the capacitor is flowed through by current and generates a magnetic field that accelerates the drive-in element toward the fastening element, and wherein the setting tool has a control unit, which is suitable for carrying out a fuse discharge of the capacitor during which current does not flow through the excitation coil.

Fastener driving tool

A tool having a working piston that moves along a working axis, a drive, for driving the working piston along the working axis, the drive having an electrical capacitor, a squirrel-cage rotor arranged on the working piston and an excitation coil, wherein current flows through the coil during rapid discharge of the capacitor and generates a magnetic field that accelerates the working piston, the tool having a frame of a soft-magnetic and electrically conducting material surrounding the excitation coil and extending in a circumferential direction with respect to the working axis, the frame having one or more at least partial interruptions, which extend over a significant part of a radial extent of the frame with respect to the working axis.

Working tool

A setting tool for driving fastening elements into a substrate, comprising a holder for holding a fastening element; a drive-in element for transferring a fastening element held in the holder into the substrate along a setting axis; and a drive for driving the drive-in element toward the fastening element along the setting axis, wherein the drive comprises an electrical capacitor; a squirrel-cage rotor arranged on the drive-in element; and an excitation coil; which during discharge of the capacitor is flowed through by current and generates a magnetic field that accelerates the drive-in element toward the fastening element, wherein the setting tool further comprises a soft-magnetic frame, in which the excitation coil is embedded; and a supporting structure; wherein, at least during the discharge of the capacitor, the supporting structure exerts on the soft-magnetic frame a pretensioning force directed radially inward with respect to the setting axis.

The invention relates to a fuel-operated firing device for driving securing elements into a substrate, comprising at least one main combustion chamber for a fuel, a driving piston that can be driven out of the main combustion chamber in a firing direction by expandable gases, and a pre-chamber with which an ignition device is associated and in which a pressure acting on the main combustion chamber can build up prior to a fuel-air mixture being ignited in said main combustion chamber. In order to improve the efficacy and/or functionality during the driving in of securing elements using the fuel-operated firing device, the pre-chamber has at least two venting connections which are mutually spaced in an axial direction and which have passages that can be exposed conjointly in order to facilitate rapid venting of the pre-chamber.

Fuel-operated firing device and method for operating a firing device of this type

The invention relates to a fuel-operated firing device for driving securing elements into a substrate, comprising at least one main combustion chamber for a fuel, a driving piston that can be driven out of the main combustion chamber in a firing direction by expandable gases, and a pre-chamber with which an ignition device is associated and in which a pressure acting on the main combustion chamber can build up prior to a fuel-air mixture being ignited in said main combustion chamber. In order to improve the efficacy and/or functionality during the driving in of securing elements, a detection system is associated with the driving piston, said detection system being connected to an electronic feedback control device for control purposes, in order to detect an initial position of the driving piston prior to a firing operation.

The invention relates to a fuel-operated firing device for driving securing elements into a substrate, comprising at least one main combustion chamber for a fuel, a driving piston that can be driven out of the main combustion chamber in a firing direction by expandable gases, and a pre-chamber with which an ignition device is associated and in which a pressure acting on the main combustion chamber can build up prior to a fuel-air mixture being ignited in said main combustion chamber. In order to improve the efficacy and/or functionality during the driving in of securing elements, a valve system is associated with the pre-chamber, by which valve system a maximum charge pressure in the pre-chamber can be varied in order to adjust the firing energy provided during the firing operation.

The invention relates to a fuel-powered setting device for driving securing elements into a substrate, comprising at least one main combustion chamber for a fuel, a drive piston that can be driven out of the main combustion chamber in a setting direction by expandable gases, and a prechamber with which an ignition device is associated and in which a pressure acting on the main combustion chamber can build up prior to a fuel-air mixture being ignited in said main combustion chamber. To improve efficiency and/or functionality when driving in securing elements, the setting device can be operated in different energy classes by an energy adjustment.

Fuel-powered setting device and method for operating such a setting device

A combustion-powered placing tool for driving fastening elements into a subsurface comprises a main combustion chamber for a compressible fuel, a driving piston, which in a starting position is retracted, and which can be driven from the main combustion chamber in the placing direction via expandable gases, a prechamber to which an ignition device is assigned, and in which a pressure acting upon the main combustion chamber can be build up prior to ignition of a fuel-air mixture in the main combustion chamber, wherein an additional ignition device is assigned to the main combustion chamber. In order to improve the effectiveness and/or the functionality during driving-in of a fastener, the placing tool comprises a selector device, allowing a selection between a reduced energy operation having an ignition in the main combustion chamber and a high-energy operation having an ignition in the prechamber.

Combustion-powered placing tool and method for operating such a placing tool

The invention relates to a drive-in device comprising a drive-in piston guided in a cylinder for driving a nail component into a work piece, a combustion chamber arranged on the drive-in piston, and which can be filled with an incendive gas mixture, a charge component for producing an over-pressure of the gas mixture, and a touch component for recognising a pressing of the drive-in device on a work piece, wherein the combustion chamber is connected to an outer space via a valve component, wherein the valve component is controlled in accordance with a position of the touch component, such that, in the event of a non-ignition, the over-pressure of the gas mixture can escape via the valve component after a removal of the drive-in device.

Fuel gas-operated drive-in device having valve component

The invention relates to a drive-in device, comprising a drive-in piston, guided in a cylinder, for driving a nail member into a workpiece, and a combustion chamber arranged above the drive-in piston, said combustion chamber being Tillable with a combustion gas, wherein the combustion chamber has a bottom that is adjustable along an axis, wherein the bottom has a groove that extends in the circumferential direction and has an inserted seal which bears in a radial direction against a rigid combustion-chamber wall, wherein a front surface, in the axial direction, of the seal protrudes in the direction of the axis from a terminating plane of the groove.

Drive-in device having an adjustable combustion chamber

A method and a system for controlling injection processes in liquid fuel-operated setting devices is provided wherein a time-controlled metering device supplies fuel from a fuel tank to a combustion chamber. In order to further improve control of injection processes in the liquid fuel-operated setting devices, a metering time interval of the time-controlled metering device is adapted to the age of the fuel tank.

Method and system for controlling injection processes

A setting device is provided, comprising a housing, a combustion chamber having an ignition apparatus, a storage container having a container wall for storing fuel, a dosing apparatus for adding a specified volume of fuel to the combustion chamber, an apparatus, such as a firing pin, for inserting a setting element into a setting object, wherein a setting force can be applied to the apparatus as a result of the pressure of combustion gas such that the apparatus is operable by combustion force, a control unit, and a temperature sensor for detecting the temperature of the fuel in the storage container. The setting device is designed such that, while the storage container is connected to the setting device, the temperature sensor mechanically contacts an outer surface of the container wall, for indirect detection of the temperature of the fuel.

Setting device having a temperature sensor

A combustion-operated setting tool () for driving-in fastening elements includes a setting piston () displaceable in a guide cylinder (), a combustion chamber (), a fuel inlet () opening into the combustion chamber () for feeding fuel therein and an ignition element () for igniting the fuel in the combustion chamber (). Both, the fuel inlet () and the ignition element (), are located at the first end () of the combustion chamber () adjacent to the guide cylinder (), and a motor-driven ventilator () supported on a rear wall () of the combustion chamber () at the second end () of the combustion chamber () remote from the guide cylinder ().

Combustion-operated setting tool

A combustion-operated setting tool for driving fastening elements in a constructional component includes a device () for adjusting setting energy applied to a setting piston () axially displaceable in a guide space () of a piston guide (). The adjusting device () has a separation member () adjustably arranged between the receptacle () and the guide space () of the piston guide () and dividing the combustion chamber () in a first sub-chamber () arranged between the receptacle () and the separation member () and a second sub-chamber () arranged between the separation member () and the guide space () of the piston guide (), the separation member () having a plurality of through-openings () for controlling flow of the combustion gases into the guide space () of the piston guide (), with an active opening cross-section of at least a portion of the through-openings () changing dependent on an adjustable position of the separation member ().

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Buchs, Switzerland

Norbert Heeb