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Hand-guided sweeping machine

  • US 4,974,283 A
  • Filed: 12/15/1988
  • Issued: 12/04/1990
  • Est. Priority Date: 12/16/1987
  • Status: Expired due to Fees
First Claim
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1. A sweeping machine of the type including:

  • a rotary brush,a hopper having a first opening for receiving particles propelled by said brush and a second opening;

    a blower for generating an airstream through an intake opening thereof;

    a filter housing having an inlet opening and an outlet opening;

    a filter mounted in the filter housing over the second hopper opening; and

    means for disposing said filter housing to establish air flow communication between said hopper second opening and said blower intake opening, with said filter housing inlet above said hopper second opening, and said filter housing outlet in close proximity to said blower intake, said machine being improved in that said means for disposing said filter housing comprises;

    means for tilting the filter housing about an axis independently of the blower and the hopper, the axis being disposed on the side of said filter housing opposite to said blower intake, and at a distance from the center of said filter housing inlet less than the distance of said axis to the center of said filter housing outlet, the filter housing being disposed, when untilted, to establish said air flow communication between the blower and hopper, and said filter housing being disposed, when tilted, with said outlet removed from close relation with said blower intake to reduce such airflow communication.

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