Vacuum bag indicator

• US 3,333,564 A
• Filed: 06/28/1966
• Issued: 08/01/1967
• Est. Priority Date: 06/28/1966
• Status: Expired due to Term

• Current Assignee: Waters, Robert S.
• Original Assignee: Waters, Robert S.
• Inventors: Waters, Robert S.
• Application Number:
  US04/561,250
• Time in Patent Office: 399 Days
• US Class Current: 116/268
• CPC Class Codes: A47L 9/19 Means for monitoring filtering operation

Claims

1. A THREE PIECE VACUUM BAG INDICATOR, COMPRISING A HOUSING, A ROTATABLE DRUM INSIDE SAID HOUSING, AND A CLOSURE DISC FOR ONE END OF SAID HOUSING AND DRUM, SAID HOUSING COMPRISING A SINGLE PIECE PLASTIC MOLDING MATERIAL MEMBER, SAID HOUSING HAVING A TOP HORIZONTAL MOUNTING PLATE AND AN INTEGRAL UNDERLYING CYLINDRICAL DRUM CHAMBER, SAID DRUM CHAMBER HAVING ITS AXIS DISPOSED PARALLEL TO SAID PLATE, ONE END OF SAID DRUM CHAMBER BEING CLOSED BY AN END WALL INTEGRAL WITH SAID DRUM CHAMBER, THE OTHER END OF SAID DRUM CHAMBER BEING OPEN, SAID DRUM COMPRISING A SINGLE PIECE PLASTIC MOLDING MATERIAL MEMBER AND BEING LOCATED IN SAID DRUM CHAMBER, SAID CLOSURE DISC BEING POSITIONED IN THE OPEN END OF SAID DRUM CHAMBER AND ADJACENT ONE END OF SAID DRUM, BEARING MEANS FORMED AT OPPOSITE ENDS OF SAID DRUM AND IN SAID END WALL AND DISC IN ALIGNMENT WITH THE AXIS OF SAID DRUM CHAMBER FOR ROTATABLY MOUNTING SAID DRUM INSIDE SAID DRUM CHAMBER, A WINDOW FORMED IN SAID MOUNTING PLATE TO MAKE SAID DRUM VISIBLE FROM ABOVE SAID MOUNTING PLATE, AN AIR VANE INTEGRALLY FORMED ON SAID DRUM FOR ROTATING THE SAME BY AIR FLOW, AN AIR INLET OPENING TO SAID DRUM CHAMBER FORMED IN SAID MOUNTING PLATE, AN