Hilti Aktiengesellschaft

Roland Hasler

Gunter Rohrmoser

Stefan Miescher

Kaveh Towfighi

Markus Sprenger

Reimund Schlosser

An internal combustion-engined tool including a piston and a combustion chamber ( ) for generating power for driving the piston and having a bottom ( ) adapted to receive the piston plate ( ), an end wall ( ) located opposite the bottom ( ), a movable wall ( ) located between the bottom ( ) and the end wall ( ) and provided with an opening element ( ), a movable separation wall ( ) located between the bottom ( ) and the movable wall ( ) and provided with a plurality of openings ( ), and an arrangement ( ) for injecting fuel gas into a space formed between the end wall and the movable wall upon the movable wall ( ) and the separation wall ( ) being displaceable in a direction of the bottom ( ) upon collapsing of the combustion chamber ( ).

Portable internal combustion-engined tool and method of forming a gas mixture in the tool combustion chamber

A cartridge clip including a carrier member (,) and a plurality of propellant-containing cartridges arranged in the carrier member (,) with the carrier member (,) having at its first free end a taper (,) a width (B) of which decreases in a direction transverse to a longitudinal extent of the carrier member (,) and transverse to longitudinal axes of the cartridges (,), and at least one locking surface (,) provided in a region between the taper (,) and a cartridge adjacent to the taper (,) and facing the taper (,).

Cartridge clip

A fastening element including a spike (1) having a stem (2) and a head (3), and a guide member (4) including a substantially cylindrical base body (5) having a central bore (6), and a plurality of longitudinal ribs (7) which extend along an entire length of the base body (5), are uniformly distributed over a circumference of the base body (5), and project radially past an axial projection of a circumferential profile of the had (3) of the spike (1), with each of the plurality of longitudinal ribs (7) having at least one locking tongue (8) projecting beyond an envelope curve (H) formed by the plurality of longitudinal ribs (7).

Fastening element

A nail magazine including a plurality of guide sleeves (2) for receiving each a nail-shaped fastening element (1) and arranged in a row next to each other in a spaced relationship with respect to each other, with each guide sleeve (2) including two end region (E.sub.1, E.sub.2) having a same cross-section, a central receiving bore (3) extending parallel to a longitudinal axis of the guide sleeve (2), and a through-opening (7) located between the two end regions (E.sub.1, E.sub.2) and extending transverse to the longitudinal axis of the guide sleeve (2) and transverse to a longitudinal extent of the nail magazine, and a plurality of pairs of spaced from each other connection webs (4, 5) for connecting adjacent sides of two adjacent guide sleeves (2), respectively, with at least one region of each connection web having a cross-shaped cross-sectional surface (8).

Nail magazine

A device for testing the holding force of fastening elements secured in a base material includes an axially extending load application member (5) engageable within an axially extending impact member so that the impact member can be displaceable axially relative to the load application member. The load application member (1) has a coupling region (3) at a front end and a stop surface (4) spaced axially from the coupling region and facing towards the first end of the load application member. The impact member (2) has a central passageway in which at least part of the load application member is displaceable. The impact member (2) has a first stop surface (6) facing a second end of the impact member (2). The coupling region is substantially cylindrically shaped and has projections (14) which extend radially outwardly from the outside surface of the coupling region. The projections (14) can be deflected elastically.

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Vaduz, Liechtenstein

Roland Hasler