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:
Jun. 17, 2003
Filed:
Aug. 08, 2000
J. Adin Mann, III, Ames, IA (US);
Robert N. McKee, Aurora, OH (US);
Doug S. Zlatic, North Royalton, OH (US);
Royal Appliance Mfg. Co., Glenwillow, OH (US);
Abstract
An impeller and housing assembly with reduced noise and improved airflow includes a volute, a shaft, a housing, a central axis, and an inlet port located along the central axis. An outlet port is located on a second axis spaced from the central axis. An exhaust passage extends from the outlet port. The impeller is mounted on the shaft for rotation. The impeller includes a hub, and at least one blade extending from the hub. The blade has a distal surface spaced from the shaft. The impeller housing has a first plane which is approximately perpendicular to the central axis. The first plane contacts the blade distal surface. A second plane is parallel to and spaced apart from the first plane. The second plane contacts a wall of the outlet port at a location closest to the first plane. A spacing wall is positioned between the volute and the outlet port and spaces each blade from the outlet port, thus reducing noise and increasing airflow.