Global Patent Index - EP 4143972 A1

EP 4143972 A1 20230308 - HAND-HELD MACHINE TOOL

Title (en)

HAND-HELD MACHINE TOOL

Title (de)

HANDGEFÜHRTE WERKZEUGMASCHINE

Title (fr)

MACHINE-OUTIL PORTATIVE

Publication

EP 4143972 A1 20230308 (DE)

Application

EP 21718906 A 20210420

Priority

  • EP 20172084 A 20200429
  • EP 2021060224 W 20210420

Abstract (en)

[origin: WO2021219437A1] The invention relates to a method for actuating a hand-held machine tool (1) comprising a drive device (4), a control device (8) for actuating the drive device (4), and at least two capacitive sensor elements (30, 31, 32, 33, 34, 35, 40) that are operatively connected to the control device (8). The method is characterized by the following steps: - ascertaining an electrical charge of the first and second sensor elements (30, 31, 32, 33, 34, 35, 40); - comparing the ascertained first electrical charge with a defined first threshold value and the ascertained second electrical charge with a defined second threshold value; - enabling the actuation of the drive device (4) and/or controlling the drive device (4) in a defined fashion by the control device (8) when a predefined condition between the first ascertained electrical charge of the first sensor element (30, 31, 32, 33, 34, 35, 40) and the ascertained detected second electrical charge of the second sensor element (30, 31, 32, 33, 34, 35, 40) is met. Also described is a machine tool (1) for carrying out a method of this kind.

IPC 8 full level

H03K 17/96 (2006.01); H03K 17/975 (2006.01)

CPC (source: EP US)

B24B 23/028 (2013.01 - US); B25F 5/02 (2013.01 - US); H03K 5/24 (2013.01 - US); H03K 17/962 (2013.01 - EP US); H03K 17/975 (2013.01 - EP); H03K 2217/960705 (2013.01 - EP); H03K 2217/960725 (2013.01 - EP); H03K 2217/9658 (2013.01 - EP)

Citation (search report)

See references of WO 2021219437A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 3905528 A1 20211103; CN 115398807 A 20221125; EP 4143972 A1 20230308; US 2023170902 A1 20230601; WO 2021219437 A1 20211104

DOCDB simple family (application)

EP 20172084 A 20200429; CN 202180028492 A 20210420; EP 2021060224 W 20210420; EP 21718906 A 20210420; US 202117918487 A 20210420