ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,658, issued on March 25, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Dust suction device" was invented by Daniel Goehring (Kreuzlingen, Germany) and Juergen Dietel (Stuttgart, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a dust suction device for a hand-held power tool, comprising a housing, a fan unit accommodated in the housing for generating an air volume flow, at least one suction opening for suctioning off drill cuttings from a borehole, and at least one suction intake opening for generating a negative pressure in an adhesion region between the dust suction device and a workpiece on the basis of...