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Vacuum cleaning device

  • US 4,037,290 A
  • Filed: 08/27/1975
  • Issued: 07/26/1977
  • Est. Priority Date: 10/29/1974
  • Status: Expired due to Term
First Claim
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1. In a vacuum cleaning device to remove debris from a surface, the combination of:

  • a hood supported on and movable along the surface and having its open side confronting the surface to form therewith a traveling vacuum chamber;

    a nozzle in the hood directed towards the surface and mounted for circular orbital movement therein;

    means to supply to the nozzle compressed air substantially free of entrained particles to agitate the debris on the surface;

    means to withdraw air from the hood to maintain a vacuum therein and to entrain and withdraw the agitated particles of debris from the body; and

    means for selectively adjusting the radius of said circular orbit.

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