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Sweeper with dual seal filter

  • US 5,647,093 A
  • Filed: 06/18/1996
  • Issued: 07/15/1997
  • Est. Priority Date: 06/18/1996
  • Status: Expired due to Term
First Claim
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1. A sweeping machine including a sweeping brush, a hopper having an inlet for receiving debris from said brush, an opening in said hopper, vacuum means for creating an air flow path from said hopper inlet and through said opening, a filter positioned in said opening, a peripheral flexible seal between an inlet side of said filter and said opening, vibratory cleaning means positioned adjacent an outlet side of said filter to impart vibration thereto, closure means enclosing said filter and cleaning means, a peripheral flexible seal between an outlet side of said filter and said closure means, said filter floating between said peripheral flexible seals whereby vibratory cleaning force applied to said filter from said vibratory cleaning means causes vibration of said filter.

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