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:
Sep. 13, 2005
Filed:
Nov. 27, 2002
Donald R. Pennington, Kingston, IL (US);
Richard G. Hext, Iii, Belvidere, IL (US);
Donald R. Pennington, Kingston, IL (US);
Richard G. Hext, III, Belvidere, IL (US);
Revcor, Inc., Carpentersville, IL (US);
Abstract
Fans according to some embodiments of the present invention include a spider, a central hub coupled to the spider, and two or more fan blades. One or more fan design features can be employed (alone or in combination) in the fans of the present invention, including the use of spider arms and/or fan blades having twisted shapes, spider lobes having cupped shapes, spiders and/or fan blades having thinner dimensions than conventional spider and fan blades in similarly-sized fans, fan blades having narrower widths, larger camber-to-chord ratios and/or tapering camber-to-chord ratios, and embossments located on the spider or the fan blades of the fan. In addition, pre-balanced spider assemblies can be employed as an alternative to balancing a fan after assembly.