Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1995-06-07
1996-12-31
Scherbel, David
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15339, 241 55, 241 56, 416223B, A47L 524
Patent
active
055881785
ABSTRACT:
This disclosure relates to an impeller for use in a centrifugal fan that also includes a housing and a drive shaft. The impeller is mounted on the shaft for rotation therewith within the housing. The impeller further includes a disk-shaped back plate and an axis of rotation extending through the center of the circular back plate. A plurality of circumferentially spaced fins or blades extend generally radially of the axis of rotation, selected blades including mulching parts and the remainder of the blades being devoid of the mulching parts. The mulching parts are adjacent the radially inner portions of the selected blades and the mulching parts extend substantially axially of the impeller and into an air intake opening of the housing. The selected blades having the mulching parts are circumferentially spaced and are separated by at least one remaining blade which is devoid of a mulching part.
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McCulloch Corporation
Scherbel David
Till Terrence R.
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