ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,777, issued on May 20, was assigned to INVENTIO AG (Hergiswil, Switzerland).
"Sliding guide shoe for an elevator" was invented by Patrick Bumann (Eschenbach, Switzerland) and Volker Zapf (Kriens-Obernau, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sliding guide shoe for an elevator has a guide shoe housing and an insert inserted into the guide shoe housing for guiding an elevator car or a counterweight. In order to positionally secure the insert, the insert has profiled pins that engage in bores in the guide shoe housing. In order to form the profiling, the pins each have radially outwardly directed ribs or projections that are dist...