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AssigneeHilti Aktiengesellschaft
InventorsDario BRALLA, Klaus RAGGL, Albert BINDER, Jochen KUNTNER
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The invention relates to a fastening tool comprising a handheld housing with a piston element (1), which is received in the housing and which can be moved in a driven manner, for transmitting energy to a fixing element (3). The piston element (1) is guided in a cylinder (2) and can be accelerated towards the fixing element (3) by means of a drive force, and the piston element (1) can be held in a starting position by means of a magnetic force of a retaining element (5). The retaining element (5) has a first magnetically conductive stop (7) and a second magnetically conductive stop (8). The magnetic stops (7, 8) are connected by a magnetically conductive counter piece (9) arranged on a piston element when the piston element (1) is being held, and excitation magnet (6) is arranged between the magnetically conductive stops (7, 8).
A fastener driving tool, comprising a hand-held housing, containing a drivably movable piston element for transferring energy to a fastening element, wherein the piston element is guided in a cylinder and can be accelerated against the fastening element by a driving force, wherein the piston element can be held in an initial position by means of a magnetic force from a retaining element, wherein the retaining element has a first magnetically conductive stop and a second magnetically conductive stop, wherein the magnetic stops are connected in a retained state of the piston element by a magnetically conductive mating piece arranged on the piston element, and wherein an excitation magnet is arranged between the magnetically conductive stops.
Dependencies are inferred from the claim text.