Indicators Of Cleaning Effectiveness Of Vacuum Cleaners And Systems To Facilitate Comparisons Of Cleaning Effectiveness Of Vacuum Cleaners

摘要

Systems and indicators of cleaning effectiveness are provided for deployment in an environment where samples of different vacuum cleaners are displayed for consideration by potential purchasers or renters of such vacuum cleaners to facilitate comparisons of cleaning effectiveness between or among the different vacuum cleaners.

主权项

1. An indicator of cleaning effectiveness for deployment in an environment where samples of different vacuum cleaners are displayed for consideration by potential purchasers or renters of such vacuum cleaners, to facilitate comparisons of cleaning effectiveness between or among the different vacuum cleaners, comprising:
a vacuum response unit comprising a vertically extending elongate tube containing a plurality of items; and an air conduit comprising a first end that is selectively connectable to an input port of a vacuum cleaner, and a second end that is connected to the vacuum response unit, wherein the plurality of items are adapted to rise in the tube when sufficient suction power is provided by a vacuum cleaner after being connected to the air conduit.