Vacuum cleaner full bag indicator

• US 3,210,793 A
• Filed: 03/16/1964
• Issued: 10/12/1965
• Est. Priority Date: 03/16/1964
• Status: Expired due to Term

• Current Assignee: Robert S. Waters
• Original Assignee: Robert S. Waters
• Inventors: Waters, Robert S.
• Application Number:
  US04/352,160
• Time in Patent Office: 575 Days
• US Class Current: 15/339
• CPC Class Codes: A47L 9/19 Means for monitoring filtering operation
• CPC Class Codes: Y10S 55/34 Indicator and controllers

Claims

1. A VACUUM CLEANER HAVING AN AIR FLOW INDICATOR COMPRISING IN COMBINATION, A VACUUM CLEANER HOUSING HAVING INLET AND EXHAUST OPENINGS AND HAVING MOUNTED THEREIN A MOTOR DRIVEN AIR PUMP FOR CREATING A SUCTION OF AIR AT SAID INLET AND AN EXHAUST OF AIR AT SAID OUTLET, AN INDICATOR OPENING IN SAID HOUSING, AN INCICATOR ENCLOSURE HAVING A TRANSPARENT BASE AND DEPENDENT SIDE WALLS MOUNTED IN THE OPENING OF SAID HOUSING WITH THE TRANSPARENT BASE GENERALLY IN THE PLANE OF THE OPENING, AN INDICATOR VANE MOVABLY MOUNTED IN SAID ENCLOSURE AND BALANCED TO BE MOVED TO A FIRST POSITION IN RESPONSE TO THE FORCE OF GRAVITY, MEANS TO CONVEY AT LEAST A PORTION OF THE AIR PUMPED BY SAID MOTOR AGAINST SAID VANE TO MOVE SAID VANE TO ANOTHER POSITION AGAINST THE FORCE OF GRAVITY PROPORTIONAL TO THE AIR FLOW, THE POSITIONS OF SAID INDICATOR VANE BEING VISIBLE THROUGH SAID TRANSPARENT BASE TO THEREBY INDICATE THE AIR FLOW THROUGH THE VACUUM CLEANER, SAID INDICATOR ENCLOSURE BEING FORMED OF A SINGLE PIECE OF MOLDED MATERIAL WITH TWO OF ITS OPPOSING DEPENDENT SIDE WALLS HAVING INTEGRALLY FORMED THEREWITH A PAIR OF RESILIENT PIVOT TONGUE MEMBERS, SAID INDICATOR VANE COMPRISING A GENERALLY PLANAR MEMBER FORMED OF A SINGLE PIECE OF MOLDED MATERIAL AND HAVING OPPOSING PIVOT PROJECTIONS ADAPTED TO BE PIVOTALLY RECEIVED BETWEEN SAID PIVOT TONGUE MEMBERS TO THEREBY MOVABLY MOUNT SAID INDICATOR VANE IN SAID ENCLOSURE, SAID VANE HAVING A WEIGHT DISTRIBUTION TO CAUSE SAID VANE TO NORMALLY ASSUME A FIRST POSITION IN RESPONSE TO THE FORCE OF GRAVITY, AND SAID MEANS TO CONVEY AIR TO SAID VANE INCLUDES AN OPENING IN A SIDE WALL OF SAID ENCLOSURES TO PASS A PORTION OF THE AIR FLOWING THROUGH THE VACUUM CLEANER HOUSING AGAINST THE PLANAR SURFACE OF SAID VANE IN A DIRECTION TO EXERT A FORCE TO MOVE SAID VANE FROM THE SAID FIRST POSITION TO ANOTHER POSITION PROPORTIONAL TO THE AIR FLOW.