Our patented airflow guide allows the Miracle Mate Platinum to operate at a high efficiency level until the bag is almost full, unlike other vacuums, which lose airflow dramatically as the bag fills.

U.S. Patent

Vacuum Cleaner
Description of the Prior Art

A problem with the vast majority of vacuum cleaners, of whatever type, is that the dust laden air to be filtered is fed into a partially filled filter compartment. The filter removes the dust as the air passes through. As the filtration proceeds, the air has to pass through more and more dust. The vacuum cleaner motor has to work harder and harder to force the air through the dust. This is undesirable both for efficiency of cleaning and for loads imposed on the motor.

Summary of the Invention

The present invention provides a simple avoidance of this problem and provides a vacuum cleaner in which the dust laden air is directed against, and filtered by, at least a portion of the filter that is not clogged with dust.

United States Patent
Patent Number: 5,297,311
Date of Patent: March 29, 1994