Halley's Comet Background/Haley's Comet Vacuum Clean
"Edmond Halley, an English astronomer, predicted in 1705 that the comet that appeared in 1682 would reappear in 1759. He concluded that the comets that appeared in 1531, 1607, and 1682 were actually the same comet. The comet was named for Halley after it reappeared in 1759." (source: AI)
Haley Corporation of Cincinnati, Ohio was the assignee of the Haley's Comet vacuum cleaner invented by Lee A. Wolf. The patent was filed on July 5, 1968, and granted August 18, 1970. I've found that most if not all inventions go into mass production around the time of the patent filing. Indeed, the 1968 MODERN METALS magazine, Volume 24, page 46 featured an article of the cleaner. Although I located no complete online copy, a snippet view mentioned its "rugged construction, good looks, and exceptional performance from the intelligent use of nine die castings. The three major castings comprising the housing, and two of the attachments are ... "
Following are some of the patents located at
https://patents.google.com/?inventor=lee+a+wolf:
1-2. Vacuum Cleaner schematics (1968/1970)
4-5. Vacuum Cleaner abstract (1968/1970)
6-8. Swivel Coupling schematics (1969/1971)
9-10. Cleaning Tool schematics (1968/1970)
