Harold Kosoff

Harold Kosoff (November 5, 1930 – March 12, 1995) was an inventor. He is credited with inventing the free piston engine and the battery-powered baby swing. [https://web.archive.org/web/20110612232205/http://www.patentstorm.us/patents/4448410/fulltext.html U.S. Pat. No. 4,448,410] Exclusive rights for the battery-powered baby swing were sold to Graco. In addition, Kosoff invented a home air cleaner and chainless bicycle using an arc and pulley system.