Hilti Aktiengesellschaft

Peter Roth

Ulrich Schiestl

Matthias Blessing

Harald Fielitz

Peter Ostermeier

Stefan Miescher

Klaus Bertsch

Thomas Thanner

Franz Hoyss

Wolfgang Erdt

Peter Goepfert

Orestis Voulkidis

Peter Niedermann

Julian Keller

The invention relates to a driving device, comprising a hand-held housing having an energy transmission element accommodated therein for transmitting energy to a fastening element to be driven in, an exchangeable propellant charge and a combustion chamber arranged between the propellant charge and the energy transmission element, said combustion chamber extending about a central axis, wherein the combustion chamber is subdivided by means of a dividing member having a number of interruptions into a first subchamber adjoining the propellant charge and at least one second subchamber adjoining the energy transmission element, wherein an ejection region, enclosing a central axis, for the propellant charge is provided in the first subchamber, said ejection region extending between the propellant charge and a central region of the dividing member, wherein the ejection region is bounded at the central region of the dividing member by a closed surface of the dividing member.

Pyrotechnic driving device

The invention relates to a fastener driving tool comprising a tank () for storing a fluid, in particular liquefied petroleum gas, a combustion chamber () connected to the tank (), wherein the combustion chamber () has a movable piston () for powering a driving plunger (), and a metering device () arranged between the tank () and the combustion chamber (), wherein the metering device () has a movable displacement member () for ejecting the fuel out of a metering space (), wherein the displacement member () can be moved by an actuation force from a first power source in a displacement direction against a pressure of the fuel, wherein an additional supporting force from a second power source acts on the displacement member ().

Fastener driving tool

A drilling tool, including a housing (,), a suction device (,), and at least one gas spring (,) cooperating with both the housing (,) and the suction device (,) and an operational direction of which is parallel to a drilling direction, with the housing (,) having bore (,) for receiving a piston rod (,) and at least a section of cylinder (,) of the at least one gas spring (,).

Drilling tool with a suction device

A drill bit having a drill body and a drill shank including a substantially cylindrical guide portion (,) having at least one guide surface (,), and a locking portion (,) projecting radially beyond the guide portion and having locking surfaces (,) extending substantially perpendicular to a longitudinal axis of the drill bit, with the locking portion (,) having, perpendicular to the drill bit longitudinal axis, a non-circular cross-section; and a drill chuck for receiving the shank.

Drill and a chuck for receiving the drill shank

The present invention relates to a suction and discharge apparatus for a drilling fluid, which is used in material removing treatment of hard constructional components formed of concrete, stone, break work, and the like, and including at least two air- and liquid-tight reservoirs (1,2), with the first reservoir being connected with a vacuum-producing device (6) and a suction conduit (3), with the second reservoir (2) being connected with an overpressure-producing device (4) and a discharge conduit (4), and with both reservoirs (1, 2) being connected by a conduit (5).

Suction and discharge apparatus for drilling fluid

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Grabs, Switzerland

Peter Roth