# US 9,873,189 B2 · Method for operating a hand-held working device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,873,189 B2 - Document ID: US9873189B2 - Status: Granted - Kind: B2 - Application number: 14/440,751 - Filed: 2013-12-10 - Published: 2015-09-10 - Granted: 2018-01-23 - Earliest claimed: 2012-12-13 - Assignees: Hilti Aktiengesellschaft - Applicants: Hilti Aktiengesellschaft - Inventors: Uwe Gerold; Norbert Welte; Thorsten Sauer - Web page: https://patentgrep.com/patent/US9873189B2 ## CPC - B25C 1/08: operated by combustion pressure - G01M 99/005: {Testing of complete machines, e.g. washing-machines or mobile phones (testing of machine parts G01M13/00; testing of electric apparatus or components G01R31/50)} - G01P 15/00: Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration - B25C: HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS (for shoemaking A43D) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) ## Abstract The invention relates to a method for operating a hand-held working device (1), which comprises a data acquisition unit (24) in which actuations of the trigger switch and accelerations of the working device (1) are captured. In order to further simplify and/or improve the operation of the hand-held working device, it is monitored within a limited period of time after actuation of the trigger switch whether an acceleration of the working device (1) exceeds an acceleration threshold in order to detect trouble-free ignitions and/or ignition problems during the operation of the working device (1). ## Claims ### Claim 1 A method for operating a fastener-setting working device comprising a trigger switch and a data-acquisition unit which detects trigger switch actuations and accelerations of the working device, the method comprising monitoring and determining, within a limited period of time after actuation of the trigger switch, whether an acceleration of the working device exceeds an acceleration threshold, and, based upon a determination of whether the acceleration of the working device exceeds the acceleration threshold, detecting fault-free ignitions/settings and/or ignition/setting faults during operation of the working device. ### Claim 2 (depends on 1) The method according to claim 1, comprising determining a fault-free ignition/setting if the acceleration exceeds the acceleration threshold. ### Claim 3 (depends on 2) The method according to claim 2, comprising determining an ignition fault/setting fault if the acceleration of the working device fails to reach the acceleration threshold. ### Claim 4 (depends on 2) The method according to claim 2, comprising detecting progression of the acceleration within the limited period of time. ### Claim 5 (depends on 2) The method according to claim 2, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 6 (depends on 1) The method according to claim 1, comprising determining an ignition fault/setting fault if the acceleration fails to reach the acceleration threshold. ### Claim 7 (depends on 6) The method according to claim 6, comprising detecting progression of the acceleration within the limited period of time. ### Claim 8 (depends on 6) The method according to claim 6, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 9 (depends on 1) The method according to claim 1, comprising detecting progression of the acceleration within the limited period of time. ### Claim 10 (depends on 9) The method according to claim 9, comprising determining a fault-free ignition/setting if the acceleration within the limited period of time has a progression defined for a fault-free operation. ### Claim 11 (depends on 10) The method according to claim 10, comprising determining an ignition fault/setting fault if the acceleration within the limited period of time does not have a progression defined for a fault-free operation. ### Claim 12 (depends on 10) The method according to claim 10, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 13 (depends on 11) The method according to claim 11, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 14 (depends on 9) The method according to claim 9, comprising determining an ignition fault/setting fault if the acceleration within the limited period of time does not have a progression defined for a fault-free operation. ### Claim 15 (depends on 14) The method according to claim 14, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 16 (depends on 9) The method according to claim 9, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 17 (depends on 1) The method according to claim 1, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is stored. ### Claim 18 (depends on 1) The method according to claim 1, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is displayed on the working device. ### Claim 19 (depends on 1) The method according to claim 1, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and or the number of ignition faults/setting faults is displayed and/or read out. ### Claim 20 (depends on 1) The method according to claim 1, wherein a number of fault-free ignitions/settings and/or a number of ignition faults/setting faults are detected, and the number of fault-free ignitions/settings and/or the number of ignition faults/setting faults is output via remote data transmission.