Central vacuum system with secondary airflow path

Details Central vacuum system with secondary airflow path Central vacuum system with secondary airflow path

2005-01-20

2008-08-05

Thomas, David B (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S301000

Reexamination Certificate

active

07406744

ABSTRACT:
A central vacuum system includes a motor-cooling airflow path that provides sufficient cooling for the motor and its drive components even though the cooling air is partially restricted by a downstream filter that captures airborne carbon dust emitted from the motor's commutator brushes. A divider system creates multiple chambers within the vacuum system's canister, and in some embodiments, air passageways in the canister and in the divider system direct the cooling air through the chambers in a flow pattern that avoids contaminating the drive components with carbon dust.

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