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:
Jan. 24, 2012
Filed:
Mar. 12, 2008
Douglas M. Debenedictis, Westford, MA (US);
Kevin D. Fairman, Lunenburg, MA (US);
Daniel V. Hinch, Norwich, VT (US);
David Japikse, Woolwich, ME (US);
Tsuguji Nakano, West Chester, OH (US);
Frederick L. Zink, White River Junction, VT (US);
Douglas M. DeBenedictis, Westford, MA (US);
Kevin D. Fairman, Lunenburg, MA (US);
Daniel V. Hinch, Norwich, VT (US);
David Japikse, Woolwich, ME (US);
Tsuguji Nakano, West Chester, OH (US);
Frederick L. Zink, White River Junction, VT (US);
Concepts ETI, Inc., White River Junction, VT (US);
Abstract
A fluid-type absorption dynamometer that includes a rotary impeller and one or more of a variety of features that enhance the shaft-horsepower range for which the dynamometer can be used. One of these features is a variable restriction intake that allows a user to adjust the flow of fluid to the impeller. Other features are a unique impeller shroud and shroud guide that are each movable relative to the impeller to allow a user to adjust flow characteristics at the exhaust and blade regions of the impeller. Yet another feature is a set of exhaust baffles that facilitate an increase in the range of shaft power ratings of the device and the reduction of deleterious vibration and noise. The dynamometer also includes impeller blades having a unique configuration.