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Surface maintenance equipment

  • US 4,373,227 A
  • Filed: 09/09/1980
  • Issued: 02/15/1983
  • Est. Priority Date: 09/09/1980
  • Status: Expired due to Term
First Claim
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1. Surface maintenance equipment comprising a body structure supported on a plurality of wheels, a downwardly opening housing defining a pickup chamber, means for storage of dirt and debris, means for moving an airstream through said equipment to assist in transporting debris from said pickup chamber to said storage means, and a filtering assembly for cleaning said airstream before discharge, said filtering assembly including a first screen filter for removing larger airborne debris and a second filter for removing fine dust particles from said airstream, said first screen filter including vibration imparting mechanism for dislodgement of said larger debris and said second filter including vibration imparting mechanism for dislodgement of dirt and debris therefrom.

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