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Vehicle with vacuum traction

  • US 4,971,591 A
  • Filed: 04/25/1989
  • Issued: 11/20/1990
  • Est. Priority Date: 04/25/1989
  • Status: Expired due to Fees
First Claim
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1. A vehicle comprising:

  • a chassis; and

    slidable vacuum means mounted on the chassis and arranged for slidable vacuum seal arrangement with a support surface, said slidable vacuum means being slidable with respect to the support surface and comprising;

    a suction cup mounted onto the chassis; and

    flexible sheet material having at least one aperture formed therein and disposed underlying said suction cup and intermediate said suction cup and the support surface, said flexible sheet material being slidable with respect to the support surface.

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