MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202617076126 A) filed by Hcp Sense Gmbh on June 19, 2026, for Apparatus And Method For Measuring Impedance Of Tribological Contacts.

Inventors include Riehl, David; Oster, Timo; Martin, Georg; Schirra, Tobias; Abdallah, Ali; and Hofmann, Klaus.

The application for the patent was published on July 31, 2026, under issue no. 31/2026.

Abstract: An apparatus for measuring an impedance (Z) along a current path (P) through a first machine component (10) and a second machine component (20) is disclosed. The first machine component (10) and the second machine component (20) are mounted for movement relative to one another, and the apparatus can be connected to a voltage source (50). The apparatus comprises: a first coil (T1), a second coil (T2), an ammeter (300) and an evaluation device (400). The first coil (T1) comprises a first coil core (112) around which a first coil winding (114) is wound, the first coil core (112) extending at least partially around the first machine component (10) and the first coil winding (114) being able to be excited by an alternating voltage signal (UB) from the voltage source (50) in order to inductively generate an alternating current (I) along the current path (P). The second coil (T2) comprises a second coil core (212) around which a second coil winding (214) is wound, the second coil core (212) extending at least partially around the first machine component (10) in order to generate a measurement current (Ib) in the second coil (T2) as a result of the induced alternating current (I) along the current path (P). The ammeter (300) is designed to measure the measurement current (Ib) generated in the second coil winding (214). The evaluation device (400) is designed to determine the impedance (Z) along the current path (P) on the basis of the alternating voltage signal (Ub) and the measurement current (Ib).

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