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Nozzle unit for vacuum cleaner

  • US 6,742,220 B2
  • Filed: 10/02/2001
  • Issued: 06/01/2004
  • Est. Priority Date: 07/28/1998
  • Status: Expired due to Fees
First Claim
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1. A nozzle unit for an electric vacuum cleaner, comprising:

  • a nozzle open toward a surface to be cleaned;

    a sealing member having two ends for opening and closing a front portion of the nozzle, the sealing member having a plurality of projections on a surface thereof facing the nozzle; and

    said members fitted at both ends of the sealing member, wherein, when the nozzle unit moves forward, the aid members slide on the surface in such a way as to make the sealing member close the front portion of the nozzle and, when the nozzle unit moves backward, the aid members slide on the surface in such a way as to make the sealing member open the front portion of the nozzle.

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