×

Systems for providing and delivering preservative gases to enclosures containing perishable products

  • US 4,843,956 A
  • Filed: 11/19/1987
  • Issued: 07/04/1989
  • Est. Priority Date: 11/19/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for providing and delivering at least one preservative gas to enclosure means containing a perishable food product comprising means for heating and converting the preservative gas from liquid state to gaseous state;

  • means for accumulating and temporarily storing a predetermined, desired quantity of said preservative gas in the gaseous state;

    adjustable, timer-controlled means for withdrawing a predetermined, desired volume of at least one gas from said enclosure;

    adjustable, timer-controlled means for directing the predetermined, desired quantity of preservative gas from said storing means to said enclosure; and

    means for temporarily preventing operation of said adjustable, timer-controlled withdrawing means and said adjustable, timer-controlled directing means while said means for storing is receiving an inflow of said preservative gas.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×