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:
Feb. 10, 2004
Filed:
May. 29, 2002
John P. Keeton, Colorado Springs, CO (US);
Other;
Abstract
An improved impeller which facilitates greater linear movement of a media with less torque; and which accordingly, consumes less power. A blade portion of the impeller has a front media accelerating face and substantially varying slopes which increase from the leading to the trailing edge portions of a media-accelerating front face thereof, to facilitate a gradual acceleration of the media as the impeller rotates. The slope of the front face of the blade portion also gradually increases moving outwardly along the intermediate blade portion, from the hub to the peripheral edge portion thereof. The blade portions have increasing slope to accelerate the media more axially, and less radially, as the impeller rotates. The leading and trailing edge portions of the blade portion each have an elongated forwardly extended peripheral portion, which culminates in a tip portion, which is most preferably bulbuous, to facilitate efficient penetration of the media by the blade portion.