Patents Assigned to Vorwerk & Co Interholdung GmbH
  • Fill-up indication arrangement for a vacuum cleaner
    Patent number: 4419782
    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.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: December 13, 1983
    Assignee: Vorwerk & Co Interholdung GmbH
    Inventors: Erhard Sobczyk, Paul-Ulrich Uibel