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Sliding door assembly for a refrigerated display case

  • US 9,532,659 B2
  • Filed: 05/06/2015
  • Issued: 01/03/2017
  • Est. Priority Date: 05/06/2015
  • Status: Active Grant
First Claim
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1. A sliding door assembly for a refrigerated display case, the sliding door assembly comprising:

  • a door frame comprising a top frame segment defining a plurality of substantially horizontal and parallel channels;

    a plurality of sliding bearings positioned within and supported by the substantially horizontal and parallel channels and configured to slide along the top frame segment within the substantially horizontal and parallel channels;

    a plurality of display case doors suspended from the plurality of sliding bearings and configured to slide, along with the plurality of sliding bearings, between an open position and a closed position, the plurality of display case doors comprising a first display case door and a second display case door;

    an automatic closure system coupled to the plurality of display case doors and configured to apply a closing force that automatically returns the plurality of display case doors to the closed position; and

    a first magnet coupled to the door frame and positioned relative to the first display case door and the second display case door such that the first magnet is configured to apply both;

    a magnetic damping force to the first display case door as the first display case door approaches the closed position, the magnetic damping force opposing the closing force applied by the automatic closure system and damping a closure of the first display case door; and

    a magnetic holding force to the second display case door when the second display case door is in the open position, the magnetic holding force opposing the closing force applied by the automatic closure system and holding the second display case door in the open position.

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