Floor maintenance machine and method Patent #: 4586208
ApplicationNo. 06/820168 filed on 01/21/1986
US Classes:15/321, Manipulatable nozzle with flexible conduit connection to portable power and/or material supply unit, e.g., window washer15/353, With liquid and/or deflection type separator210/411Backwash or blowback
ExaminersPrimary: Moore, Chris K.
Attorney, Agent or Firm
International ClassesA47L 11/30 (20060101)
A47L 11/29 (20060101)
AbstractIn connection with a surface material cleaning apparatus, a tank of cleaning fluid, an outlet line from the tank to a cleaning head, a suction pump carried by the tank recovering cleaning fluid from the cleaning head, a pump feeding the outlet line from the tank, a bleed line from the pump passing liquid into and through the filter under a relatively high pressure creating a motion of liquid through and about the wall of the filter maintaining the filter wall in a relatively unclogged condition, the cleaning fluid in the tank being recycled for cleaning purposes through the filter at a relatively low pressure.