Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1996-12-18
1997-12-02
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15344, 241 55, 4151211, B02C 1806
Patent
active
056922620
ABSTRACT:
A centrifugal impeller for a hand-held leaf blower-vacuum apparatus includes a central hub for mounting to the drive shaft of the leaf blower-vacuum motor and a plurality of serrated vanes for shredding drawn-in lawn debris and ejecting the shredded debris from the leaf blower-vacuum apparatus. The serrated vanes have a plurality of sharp corners on the leading edges of the vanes on which the drawn-in debris is incident. The sharp corners reduce the debris more rapidly and to a smaller size, thereby preventing the jamming of the impeller by an overload of debris.
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Haupt David J.
Marcade Michael D.
Hubbard Marc A.
Moore Chris K.
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