Steven M Mcclellan

US Patent:

20120100004, Apr 26, 2012

Filed:

Oct 25, 2010

Appl. No.:

12/911307

Inventors:

Steven J. McClellan - Nashua NH, US

International Classification:

F03B 3/12
B23P 15/02

US Classification:

416241 R, 298897

Abstract:

An impeller for a turbine includes a conical body having a wider end, a narrower end and an outside surface, a front end surface connected to the wider end of the conical body, a back end surface connected to the narrower end of the conical body, and a plurality of helical grooves disposed in the outside surface of the conical body wherein the helical grooves decrease in depth from the wider end to zero depth near the narrower end.