Hilti Aktiengesellschaft

Michael Maier

Gerhard Ehmig

Fritz Mark

Mario Scalet

Hans Hachtel

Kurt Oehri

Stefan Bonig

Josef Beck

A combustion-engined setting tool, including a housing (), an axially displaceable piston guide () and a firing pin guide () provided on a side of the piston guide () facing in the direction opposite the setting direction and axially displaceable relative to the housing (), damping element () supported against a stop () provided in the housing () and cooperating with the firing pin guide (), and a locking device () having a locking position () in which it prevents a press-on force, which is generated upon the setting tool () being pressed against a construction component, from acting on the damping element (), so that the damping element () remains inactive during a press-on process, and having a release position () in which the damping element () becomes active and is capable of absorbing recoil forces.

Setting tool

Apparatus for driving fastening elements (9), such as nails, bolts, clips and the like, into a receiving material includes a magazine (3) extending laterally outwardly from a guide (1). The magazine (3) holds a carrying strip (10) for the fastening elements (9) and a transport slide (8) which, in cooperation with the magazine, can be shifted parallel to the driving direction of the apparatus. The magazine (3) has a housing (31) and a guide channel (37) opening into a transport channel (11) in the guide (1). The guide channel (37) is formed by two laterally spaced guide rails (5, 6) each with a surface facing the other and profiled with tooth-shaped projections having tooth flanks of different lengths with the flanks facing the transport channel (11) being shorter. A first guide rail (5) can be displaced away from a second guide rail (6) parallel to the length of the guide channel (37) by the transport slide (8). The transport slide (8) interacts with a control cam (53) located on the first guide rail (5). Both the first and second guide rails (5, 6) can be shifted laterally against the force of a spring (7).

Apparatus with magazine for driving fastening elements

Tool for driving fastening elements into a hard receiving material, such as concrete, masonry, rock and the like, has a first device (1) for drilling a fastening element into the hard material and a second device (2) for axially propelling the fastening element into the receiving material after it has been partly drilled in. The first device (1) provides a borehole in the hard receiving material by applying rotary movement to the fastening element, possibly with the addition of axially directed striking force. The second device (2) completes the insertion of the fastening element into the receiving material by directing an axial force produced by high pressure gases against the partly drilled in fastening element.

Tool for driving fastening elements into hard receiving materials

A fastening element assembly for use in a hard receiving material, such as concrete, masonry and the like, includes a sleeve and a fastening element or bolt. The sleeve forms a blind bore in the receiving material. At its leading end, in the insertion direction, the sleeve has a cutting edge. The sleeve is rotated by rotational force transmitted to engagement faces on the sleeve. After the borehole is drilled by the sleeve, the bolt is driven through the sleeve into the receiving material.

Growing community of inventors

Rankweil, Austria

Michael Maier