ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,048, issued on Dec. 2, was assigned to ALBER GMBH (Albstadt, Germany).
"Auxiliary drive device for a wheelchair" was invented by Gerd Dziobek (Balingen, Germany) and Joachim Menig (Bisingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An auxiliary drive device for a wheelchair has at least one freely pivotable electrically driven drive wheel and a coupling mechanism for coupling the auxiliary drive device to the wheelchair. The coupling mechanism includes a movable locking element which is movably supported in the coupling mechanism. The movable locking element can be in a locking position in which it causes locking in a positive-locking m...