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Compaction methods and apparatus

  • US 6,505,550 B2
  • Filed: 05/09/2001
  • Issued: 01/14/2003
  • Est. Priority Date: 09/05/1996
  • Status: Expired due to Fees
First Claim
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1. Compacting apparatus comprising a screw conveyor for conveying waste material through a passage and compacting it therein, an exit nozzle communicating with the passage, the nozzle defining an internal transverse cross-sectional area which enlarges and reduces and which comprises at least one selectively variable and adjustable resilient member which sets the nozzle to be biased towards and maintains a specifically desired cross-sectional area within its range of enlargement or reduction to achieve compaction substantially independent of increasing and decreasing waste material pressure.

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