The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 1980
Filed:
Jan. 05, 1978
Robert P Whitney, Grand Haven, MI (US);
Clarke-Gravely Corporation, Muskegon, MI (US);
Abstract
A vacuum cleaning apparatus is disclosed having a suction head adapted for use on a collection tank. The suction head includes a base, at least one blower-motor unit mounted on the base and having a suction intake and an exhaust outlet. The exhaust outlet of the unit is connected to a baffled sound chamber within which a plurality of sound absorbing elements are positioned. Another blower-motor unit may be mounted on the base with the units interconnected in series. A cover carried by the base encloses the blower-motor unit or units and also defines a baffled cooling air intake passage for each blower-motor unit. The suction inlet is connected to an intake aperture through a transfer chamber.