ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,201, issued on April 7, was assigned to ALBER GMBH (Albstadt, Germany).
"Auxiliary drive device for a wheelchair" was invented by Joachim Menig (Bisingen, Germany) and Bernd Engels (Kusterdingen, 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-loc...