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:
Mar. 06, 2007
Filed:
Jan. 12, 2005
Applicants:
Brian Havel, London, CA;
Mark Blissitt, London, CA;
Inventors:
Brian Havel, London, CA;
Mark Blissitt, London, CA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fanhas a hub, a plurality of fan bladesattached to the hub at one end and extending outwardly from the hub, and a ringconcentric with the hub and coupled to tipsof the blades. Wherein a dimensionless radius (r/R) is defined from a center of the hub (r/R=0) radially outwardly, wherein each tip of the blades is r/R=1. A stagger angle is defined as an angle between an axis of rotation of the fan and a set angle of each fan blade, and C/R is a dimensionless chord length where C is chord. The fan is defined by values of r/R, C/R and stagger angle.