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. 25, 2008
Filed:
Oct. 28, 2004
Applicant:
John F. O'connor, Jr., New Hartford, CT (US);
Inventor:
John F. O'Connor, Jr., New Hartford, CT (US);
Assignee:
The Bergquist Torrington Company, Torrington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 3/02 (2006.01); F28F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved centrifugal impeller having between 20 and 26 rearwardly curved blades blades, a ratio of blade annulus width to wheel radius between 0.31 and 0.37, and an inlet blade angle in the range 32° to 36° and a discharge blade angle in the range 36° to 40°.