**5. Patents**

Homišin, J. *Control system for continuous tuning of pneumatic coupling's angular twist.* Utility model SK7497Y1, Industrial Property O ffice of Slovak Republic, Banská Bystrica 2016. 1 August 2016. Available online: https://wbr.indprop.gov.sk/WebRegistre/Tlac/Download?fileName=COO.2161.100.7.3398451 (accessed on 18 September 2020). (In Slovak)

Homišin J. *Continuously tuned mechanical system*. Patent PL 216901 B1, The Patent O ffice of the Republic of Poland, Warszawa 24 October 2013. Available online: https://api-ewyszukiwarka. pue.uprp.gov.pl/api/collection/68227816fb32c5ac9046f508f5d65afa (accessed on 18 September 2020). (In Polish)

**Author Contributions:** Conceptualization, P.K. and M.U.; methodology, J.H.; software, R.G.; validation, M.U. and P.K.; formal analysis, J.H.; investigation, R.G., M.P. and J.K.; resources, M.P. and J.K.; data curation, M.U.; writing—original draft preparation, P.K. and M.U.; writing—review and editing, P.K., M.U. and M.P.; visualization, M.U.; supervision, J.H.; project administration, J.H.; funding acquisition, J.H. All authors have read and agreed to the published version of the manuscript.

**Funding:** Research was funded by gran<sup>t</sup> project *VEGA 1*/*0528*/*20 "Solution of new elements for mechanical system tuning."* "This work was supported by the Slovak Research and Development Agency under the Contract no. APVV-19-0328."

**Acknowledgments:** The authors would like to thank Ing. Miroslav <sup>B</sup>árány for the technical support.

**Conflicts of Interest:** The authors declare no conflict of interest.
