Richard KnerrRichard Knerr was an American inventor best known for marketing the Frisbee and Hula hoop.CareerWham-OIn 1948, he co-founded the company Wham-O with Arthur Melin. In 1957, an Australian visiting California told them offhand that in his home country, children twirled bamboo hoops around their waists in gym class. Knerr and Melin saw how popular such a toy would be, and soon they were winning rave reviews from school children for the hollow plastic prototype they had created.