Floor cleaning apparatus with slidable flap

  • US 5,611,108 A
  • Filed: 05/30/1995
  • Issued: 03/18/1997
  • Est. Priority Date: 04/25/1994
  • Status: Expired due to Term
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First Claim
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1. An apparatus for cleaning a surface comprising:

  • a frame;

    means, operatively attached to said frame, for cleaning a surface;

    at least three wheels for moving said frame and said means for cleaning over a surface; and

    means for steering at least one of said at least three wheels;

    wherein said means for cleaning includes a flap and means for mounting said flap to said frame;

    wherein said flap includes an upper edge having a first thickness and a lower edge having a second thickness that is less than said first thickness;

    wherein, when said flap is in use, said lower edge is disposed adjacent to the surface and said upper edge is displaced from said surface;

    wherein said means for mounting includes a longitudinally extending slot for holding said flap, said slot having an upper portion for holding said upper edge of said flap and a lower portion for holding a first portion of said lower edge of said flap but incapable of accommodating said upper edge of said flap, said lower portion extending from said upper portion to an opening through which a second portion of said lower edge of said flap extends towards said surface;

    wherein said upper portion of said longitudinally extending slot includes a first channel for holding said upper edge of said flap that is located at a first distance from the surface, and a second channel for holding said upper edge of said flap that is separate from said first channel and located at a second distance from the surface that is less than said first distance, wherein said second channel permits a flap that is held by said first channel and whose lower edge has been worn away from the surface to be moved so that the lower edge can be brought closer to the surface;

    wherein said means for mounting includes a groove adjoining said lower portion of said longitudinally extending slot that is incapable, in combination with said lower portion of said longitudinally extending slot, of accommodating said upper edge of said flap;

    wherein said flap can be slidably inserted into and slidably removed from said longitudinally extending slot.

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