# US 10,118,283 B2 · Hand-held tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,283 B2 - Document ID: US10118283B2 - Status: Granted - Kind: B2 - Application number: 14/423,229 - Filed: 2013-08-21 - Published: 2015-10-22 - Granted: 2018-11-06 - Earliest claimed: 2012-08-24 - Assignees: Hilti Aktiengesellschaft - Applicants: Hilti Aktiengesellschaft - Inventors: Iwan Wolf; Harald Fielitz; Klaus Bertsch - Web page: https://patentgrep.com/patent/US10118283B2 ## CPC - B25C 1/008: {Safety devices} - B25C 1/06: operated by electric power - B25C: HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS (for shoemaking A43D) ## Abstract The invention relates to a hand-held tool for driving fastening elements into a base, the tool having an initiating device, the actuation of which initiates a drive-in action and which can be blocked, depending on at least one state of the tool. In order to further simplify or improve the operation of the hand-held tool, a lifting magnet, associated with the initiating device, can block or enable the actuation of the initiating device. ## Claims ### Claim 1 A hand-held tool for driving fastening elements into a base, comprising an initiating device, the actuation of which initiates a driving process and which can be blocked depending on at least one tool state; and an electrically actuatable mechanical blocking device with which actuation of the initiating device can be blocked or released, wherein the actuatable mechanical blocking device is mechanically coupled to a transmission element, which in turn acts mechanically on the initiating device, the transmission element having a recess, the recess having a position relative to the initiating device that can be varied by the blocking device, wherein the initiating device comprises an actuator and the recess is positioned in a receiving position relative to the initiating device such that the actuator engages during actuation with the recess, without initiating a movement of the transmission element, and wherein the recess is positioned in an initiating position relative to the initiating device such that, when actuating the initiating device, the actuator initiates a movement of the transmission element and initiates a driving process. ### Claim 2 (depends on 1) The hand-held tool according to claim 1, wherein the blocking device comprises a tappet that acts mechanically on an initiating switch of the initiating device. ### Claim 3 (depends on 2) The hand-held tool according to claim 2, wherein the tappet is movable between a blocking position, in which the initiating switch is blocked, and a release position, in which the initiating switch is released. ### Claim 4 (depends on 3) The hand-held tool according to claim 3, wherein the tappet is movable linearly between the blocking position and the release position. ### Claim 5 (depends on 3) The hand-held tool according to claim 3, wherein the tappet is moveable about a pivot shaft between the blocking position and the release position. ### Claim 6 (depends on 3) The hand-held tool according to claim 3, wherein the blocking device is mechanically coupled to a transmission element, which in turn acts mechanically on the initiating device. ### Claim 7 (depends on 2) The hand-held tool according to claim 2, wherein the blocking device is mechanically coupled to a transmission element, which in turn acts mechanically on the initiating device. ### Claim 8 (depends on 1) The hand-held tool according to claim 1, wherein the transmission element comprises a lever, which is acted upon in a longitudinal direction by the blocking device, and in a transverse direction by the initiating device. ### Claim 9 (depends on 1) The hand-held tool according to claim 1, wherein the blocking device is connected to a controller for control purposes. ### Claim 10 (depends on 9) The hand-held tool according to claim 9, wherein the controller is connected to a contact pressure sensor. ### Claim 11 (depends on 10) The hand-held tool according to claim 10, wherein the controller actuates the blocking device electrically such that the blocking device releases the actuation of the initiating device if the contact pressure sensor detects pressing of the hand-held tool against a base, and that the blocking device blocks actuation of the initiating device if the contact pressure sensor does not detect pressing of the hand-held tool against a base. ### Claim 12 (depends on 1) The hand-held tool according claim 1, wherein the blocking device comprises an electromagnet and a lifting member. ### Claim 13 (depends on 12) The hand-held tool according to claim 12, wherein the lifting member penetrates into the electromagnet. ### Claim 14 (depends on 12) The hand-held tool according to claim 12, wherein the lifting member is arranged completely outside of the electromagnet, both in a blocking position and in a release position of the blocking device. ### Claim 15 (depends on 12) The hand-held tool according to claim 12, wherein the initiating device comprises an initiating switch, and the blocking device comprises a tappet that acts mechanically on the initiating switch and the tappet comprises the lifting member. ### Claim 16 (depends on 5) The hand-held tool according to claim 5, wherein the transmission element comprises a lever, which is acted upon in a longitudinal direction by the blocking device, and in a transverse direction by the initiating device.