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Scrubbing machine with means for continuously cleaning a filter

  • US 5,901,407 A
  • Filed: 05/15/1997
  • Issued: 05/11/1999
  • Est. Priority Date: 05/15/1997
  • Status: Expired due to Term
First Claim
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1. A surface scrubbing machine including a body, wheels for supporting the body, surface scrubbing means mounted on the body, means mounted on the body for supplying a cleaning solution to a surface to be cleaned, a solution recovery tank on the body, vacuum means for suctioning used cleaning solution from the surface being cleaned and for conveying it to the recovery tank,a filter in the recovery tank, a pump for transferring filtered solution from the downstream side of the filter to the means for supplying a cleaning solution, andmeans for intermittently applying air at ambient pressure against the downstream side of said filter to remove soilage from the upstream side thereof.

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