US Patent Issued to Siemens on March 25 for "Mechanical device for converting direct current into alternating current" (German Inventor)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,499, issued on March 25, was assigned to Siemens AG (Munich).

"Mechanical device for converting direct current into alternating current" was invented by Rolf Vollmer (Gersfeld, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mechanical device for converting direct current into three-phase alternating current includes a contact unit having at least two receiving regions for receiving electrical energy as direct current and at least three output regions for outputting electrical energy as alternating current. A first receiving region contacts a positive pole of a direct current feed. A second receiving region contacts a negative pole of the ...