Fill-up indication arrangement for a vacuum cleaner

• US 4,419,782 A
• Filed: 10/22/1981
• Issued: 12/13/1983
• Est. Priority Date: 10/31/1980
• Status: Expired due to Fees

• Current Assignee: Vorwerk & Company Interholding Gesellschaft Mit Beschrã¤Nkter Haftung (Vorwerk & Company KG)
• Original Assignee: Vorwerk & Company Interholding Gesellschaft Mit Beschrã¤Nkter Haftung (Vorwerk & Company KG)
• Inventors: Uibel, Paul-Ulrich, Sobczyk, Erhard
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US06/313,752
• Time in Patent Office: 782 Days
• Field of Search: 15/339, 55/274, 55/DIG. 34, 116/268, 116/270
• 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

Abstract

A fill-up indication arrangement for a vacuum cleaner includes a diaphragm adapted to move up and down in response to a pressure build-up in the vacuum cleaner and an indicator disc connected to the diaphragm through a pivotable gear sector and a stop on the indicator disc, which stop engages with the teeth of the gear sector when the indicator disc takes its angular position thus indicating that a filter bag contained in the vacuum cleaner is full and should be replaced.

Claims

1. A fill-up indication arrangement for a vacuum cleaner with an insertable filter bag, comprising a diaphragm mounted on a base in said cleaner communicating on one side thereof with the interior of the filter bag and with the exterior of the vacuum cleaner on the other side thereof and movable in upward and downward directions in response to the change in pressure differential between the interior of the filter bag and the exterior of the vacuum cleaner;

a turnable indicator disc operatively connected to said diaphragm and adapted to move in response to the movement of said diaphragm;

an angular gearing interconnected between said diaphragm and said disc to translate the movement of said diaphragm into the movement of said indicator disc, said angular gearing including a pivotable gear sector mounted on an axle on said base provided with teeth and cooperating with said diaphragm and a rod-like stop carried by said indicator disc, said teeth being inter engageable with said stop;

said gear sector being adapted to pivot about said axle in response to movement of said diaphragm;

said indicator disc being provided with a plurality of locking teeth positioned along a circular track in a spaced relationship with one another on the surface of said disc; and

additional locking means including an elongated lever formed with a counter-locking tooth at one end thereof, said counter-locking tooth being engageable with said locking teeth.

2. The arrangement of claim 1, wherein said locking means further include a pivotable angular lever connected to a second end of said elongated lever and adapted upon pivoting movement to release said counter-locking tooth of said elongated lever from said locking teeth.

3. The arrangement of claim 2, wherein said elongated lever is provided with a sloped surface formed thereon between said one end and said second end thereof, said base having an extension with an edge, said sloped surface running against said edge when said elongated lever is released from said locking teeth.