Device for signaling need for cleaning or replacing suction cleaner dust bag

Abstract

Abstract THIS INVENTION RELATES TO A DEVICE FOR INDICATING OR SIGNALING THE NEED FOR CLEANING OR REPLACING A SUCTION CLEANER DUST BAG DUE TO DIRT TRAPPED THEREIN. THE DEVICE PRODUCES AN AUDIBLE SIGNAL WHEN A VALVE MOVES FROM A CLOSED TO AN OPEN POSITION TO ALLOW AIR TO FLOW TO THE ATMOSPHERE THROUGH A PASSAGEWAY FROM THE INTERIOR OF THE SUCTION CLEANER. THE VALVE FORMS A PART OF AN ARMATURE MEMBER WHICH IS MAGNETICALLY ATTRACTED BY A MAGNET AND IS MOVABLE THEREFROM. A DIAPHRAGM IS MOVABLE FROM A FIRST POSITION TO ONE OF SEVERAL SECOND POSITIONS RESPONSIVE TO THE PRESSURE DIFFERENTIAL AT OPPOSITE SIDES OF THE DUST BAG, THE DIAPHRAGM IN ITS SECOND POSITIONS ACTING ON THE ARMATURE MEMBER. WHEN THE VALVE IS MOVED QUICKLY FROM ITS CLOSED POSITION TO A WIDE OPEN POSITION AIR FLOWS AT A HIGH VELOCITY THROUGH THE PASSAGEWAY TO CAUSE THE DEVICE TO PRODUCE AN AUDIBLE SOUND OF HIGH INTENSITY. SUCH QUICK MOVEMENT OF THE VALVE FROM ITS CLOSED TO ITS OPEN POSITION IS EFFECTED SIMULTANEOUSLY WITH MOVEMENT OF THE ARMATURE MEMBER FROM THE MAGNET BY A FORCE WHICH IS DEPENDENT UPON THE PARTICULAR SECOND POSITION TO WHICH THE DIAPHRAGM IS MOVED AND WHICH EXCEEDS THE FORCE MAGNETICALLY ATTRACTING THE ARMATURE MEMBER TO THE MAGNET.

Inventors

• 👤 Hubert Marc Milliam Autrand

Bibliographic Details