A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
15/53.2
A47L 9/19 (2006.01) A47L 9/14 (2006.01) A47L 9/28 (2006.01)
Patent
CA 1287953
VACUUM CLEANER WITH PERFORMANCE MONITORING SYSTEM Abstract of the Disclosure A canister type vacuum cleaner includes a floor cleaning unit and a canister unit interconnected by a wand and hose assembly. The canister unit has a dust collection bag mounted in a dust collecting compartment by a dust bag mount. A suction fan evacuates the air within the dust col- lecting compartment causing dirt laden air to flow from the floor cleaning unit through the wand and hose assembly and into the dust bag through an intake port formed in the dust bag mount. The air is exhausted from the canister unit through a discharge port. A performance monitoring and indicating system provides information as to the operative condition of the vacuum cleaner by means of an "OK" light, a "No Bag" light, a "Check Bag" light and a "Check Hose" light. A dust bag sensor senses the differential pressure between the intake port and the dust collecting compartment and is actuated when a functional dust bag is properly mounted on the dust bag mount. A discharge sensor senses the differential pressure between the discharge port and the dust collecting compartment and an intake sensor senses the differential pressure between the outside of the vacuum cleaner and the intake port. The actuation of the intake and discharge sensors provide informa- tion to indicate when the dust bag has become too clogged or that a restriction exists in the wand and hose assembly.
553767
Kirby Eades Gale Baker
Matsushita Appliance Corporation
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