US 12,259,404 B2
Apparatus for detecting a critical fall
Varnim Goyal, Kaufering (DE); and Bernd Ziegler, Schwabmuenchen (DE)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/761,519
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Sep. 21, 2020, PCT No. PCT/EP2020/076248
§ 371(c)(1), (2) Date Mar. 17, 2022,
PCT Pub. No. WO2021/063720, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 19200689 (EP), filed on Oct. 1, 2019.
Prior Publication US 2022/0373573 A1, Nov. 24, 2022
Int. Cl. G01F 15/18 (2006.01); G01P 15/18 (2013.01); H02J 7/00 (2006.01)
CPC G01P 15/18 (2013.01) [H02J 7/0029 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An apparatus for detecting a critical fall containing control electronics, the apparatus comprising:
at least one voltage measuring device;
at least one inertial body held by three electrical conductors along three principal inertial axes of the inertial body, a voltage being applied to each of the three electrical conductors, the three electrical conductors being configured such that when a predetermined acceleration threshold value for the inertial body is reached a conductivity of at least one electrical conductor is impaired such that reaching of a predetermined voltage threshold value for at least one voltage is detectable by the voltage measuring device.