ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,252, issued on Feb. 17, was assigned to Hilti AG (Schaan, Liechtenstein).
"Levelling system" was invented by Michael Ziltener (Siebnen, Switzerland), Achim Hassler (Eschen, Liechtenstein) and Emina Hodzic (Sarajevo, Bosnia and Herzegovina).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes a power tool that has a rotation output shaft for rotationally driving a levelling mechanism for a structural attachment and has a rotation drive mechanically connected to the rotation output shaft to rotationally drive the rotation output shaft. The system further includes a remote unit that has a first structural attachment contact structure where t...