Spiral conveyor apparatus with automatic flow control

  • US 7,240,788 B2
  • Filed: 08/08/2006
  • Issued: 07/10/2007
  • Est. Priority Date: 08/19/1997
  • Status: Expired due to Fees
First Claim
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1. A conveyor comprising:

  • a plurality of spiral segments, each having an entry position at a first level and an exit position at a second level, connected together to create a desired conveyor length;

    a sensor in at least one spiral segment for detecting a conveyed article and generating an associated signal;

    a powered roller in at least one spiral segment that is responsive to said associated signal from said sensor and selectively operates in transport and accumulate modes as called for by said associated signal.

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