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CARPET CLEANING MACHINE

  • US 3,828,390 A
  • Filed: 09/13/1971
  • Issued: 08/13/1974
  • Est. Priority Date: 09/13/1971
  • Status: Expired due to Term
First Claim
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1. Improvements in a carpet cleaning machine of the type using water based cleaning fluid conveyed through a flexible hose to an ambulant cleaning head having nozzles whereby the fluid is directed onto the carpet and then evacuated, to a drain, for partial drying of the carpet, said improvements comprising:

  • a vacuum tank having an inlet port, an exhaust port and a removable filter on said exhaust port;

    said removable filter comprising a reticulated upstanding screen surrounding said exhaust port and having an open top;

    said vacuum tank having a self-sealing cover spaced slightly above said open top and thus defining an emergency passage to said exhaust port of the vacuum tank in the event of the clogging of the reticulated screen;

    a dual purpose vacuum pump connected to said exhaust port and discharging into a drain hose; and

    a hand-pulled ambulant cleaning head connected by a flexible hose to said intake port of said vacuum tank, said cleaning head having a vacuum duct adjacent to the trailing edge thereof, as disposed when being pulled across the carpet during use, and being weighted to hold said trailing edge and duct in close contact with the pile of the carpet being cleaned, whereby the suction of said single pump is conserved and more fully utilized for partial drying of the carpet;

    said cleaning head also having jet nozzles adjacent the leading edge thereof, as the cleaning head is being pulled across the carpet, and spaced from said vacuum duct a distance on the order of at least 6 inches so that the sprayed water and any chemicals therein will be in contact with the pile of the carpet for an assured time even when the cleaning head is moved rapidly over the carpet.

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