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Air blast sweeper with dust control system

  • US 3,977,039 A
  • Filed: 02/05/1975
  • Issued: 08/31/1976
  • Est. Priority Date: 02/05/1975
  • Status: Expired due to Term
First Claim
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1. In a sweeper including an air blast pickup head supplied with pressurized air from the exhaust of a blower and a debris collecting chamber coupled between the pickup head and the blower such that debris is picked up by the air stream through the pickup head and deposited in the debris collecting chamber, a dust control system comprising:

  • a source of pressurized fluid;

    a first nozzle coupled to said source and positioned to provide a fine mist spray of fluid in the air flow path from said blower exhaust to said pick up head; and

    a second nozzle coupled to said source and positioned to provide a fine mist spray of fluid in the air flow path from said pickup head to the inlet of said blower. 9

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