JAMES P BURNS
Engineering in Hollis, NH
License number
Massachusetts 30596
Issued Date
Jul 24, 1981
Expiration Date
Jun 30, 2018
Type
Mechanical Engineer
Address
Address
Hollis, NH 03049
Professional information
Vortex Inducing Rotor For Screening Apparatus For Papermaking Pulp
US Patent:
2005004, Mar 3, 2005
Filed:
Sep 2, 2003
Appl. No.:
10/653709
Inventors:
Richard Meese - Wilmington, DE
Brian Gallagher - Litchfield NH, US
Bruce Crossley - Pittsfield MA, US
James Burns - Hollis NH, US
Brian Gallagher - Litchfield NH, US
Bruce Crossley - Pittsfield MA, US
James Burns - Hollis NH, US
International Classification:
B07B001/52, B07B001/04
US Classification:
209273000, 209270000, 210413000, 162232000
Abstract:
A rotor having a longitudinal axis of rotation and including an outer surface adjacent a screen surface. The rotor also includes a plurality of sets of radially extending, relative to the rotor axis, adjacent vane members attached to the rotor surface, each set including at least four adjacent vane members with equally spaced apart and parallel trailing edges ending in a common plane. The two outermost vane members have leading edges forward of the two most inside vane members, with the leading edges forward of the two most inside vane members being angled toward its next adjacent vane. The height of the two innermost vane members is about half of the height of the two outermost vane members. Each of the outermost vane members is angled relative to the circumferential direction of travel of the rotor by each of the outermost having vane members with a leading edge that is angled relative to its trailing edge. Each of the vane members has a leading edge forming an acute angle relative to the surface of the rotor and has a top edge with the same radius of curvature as the screen. The plurality of sets of vane members are spaced out throughout a screening chamber defined between the rotor surface and the screen in the direction of the rotor axis. The rotor outer surface does not have any longitudinally extending lifting bodies that produce pressure pulses throughout the screening chamber.
Mixing Impeller
US Patent:
8201990, Jun 19, 2012
Filed:
Oct 8, 2008
Appl. No.:
12/247944
Inventors:
Anthony C. Sykora - Hudson NH, US
Bruce R. Crossley - Pittsfield MA, US
Joseph A. Ducharme - Milford NH, US
James P. Burns - Hollis NH, US
Bruce R. Crossley - Pittsfield MA, US
Joseph A. Ducharme - Milford NH, US
James P. Burns - Hollis NH, US
Assignee:
Ovivo Luxembourg S.à r.l. - Munsbach
International Classification:
B01F 7/22, B02C 13/28
US Classification:
3663307, 241297, 241 4617, 366297, 3663303, 366342
Abstract:
An impeller for use in association with an extraction plate adapted for defibering liquid slurry stock and causing defibered material to pass through the extraction plate. The impeller includes a cylindrical central body portion and a plurality of vanes extending outwardly in a generally tangential direction from the central body portion. The vane leading face height from an extraction side to an air foil surface is substantially constant from the vane outer end to where the vane is attached to the central body portion at the radially outward edge of the central body portion, and then thereafter gradually decreasing in height from the radially outward edge of the body central portion to the airfoil surface at the vane inner end.