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Particulate delivery system

  • US 5,071,289 A
  • Filed: 12/27/1989
  • Issued: 12/10/1991
  • Est. Priority Date: 12/27/1989
  • Status: Expired due to Fees
First Claim
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1. A system for delivering a particulate material, comprising:

  • (a) a storage hopper for the material, the hopper having a bottom hopper outlet;

    (b) feeder means for feeding the material, the feeder means having a material inlet and a feeder outlet;

    (c) a hopper passage connecting the hopper outlet to the material inlet of the feeder means;

    (d) stir means for selectively agitating the material in the hopper, comprising means for connecting a source of pressurized gas to the hopper passage between the hopper and the material inlet of the feeder means in response to a stir signal.

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