Electro-magnetic check valve

  • US 10,240,829 B2
  • Filed: 04/25/2013
  • Issued: 03/26/2019
  • Est. Priority Date: 06/25/2012
  • Status: Active Grant
First Claim
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1. An electro-magnetic valve for use in an air exchange panel of a transportation refrigeration system, comprising:

  • a valve cap configured and arranged to be positioned adjacent the air exchange panel and movable between a first position and a second position, the valve cap including a magnetic portion;

    a resilient flexible member coupled to the valve cap and configured and arranged to be coupled to the air exchange panel to bias the valve cap into the first position;

    an electromagnet positioned inside the air exchange panel opposite the valve cap, anda controller that selectively applies power to the electromagnet to move the valve cap between the first position and the second position;

    wherein the first position is an opened position allowing an airflow across the valve and the second position is a closed position stopping the airflow across the valve;

    wherein a first end of the valve cap is fixed at the air exchange panel, and the second end of the valve cap is a free end, and configured such that the valve cap pivots about the first end between the first position and the second position;

    wherein the resilient flexible member is planar when the valve cap is in the first position;

    wherein the magnetic portion is positioned at the free end, and the electromagnet is located proximate to the free end such that when activated the electromagnet is interactive with the magnetic portion.

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