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Air filter monitoring tab

  • US 10,112,139 B2
  • Filed: 09/09/2016
  • Issued: 10/30/2018
  • Est. Priority Date: 09/30/2014
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a filter defining an enclosed open ended channel;

    a housing positioned in the enclosed open ended channel;

    a rod positioned at least partially within the housing; and

    a membrane coupled to and extending between the housing and the rod, wherein the membrane is configured to move the rod from a first position to a second position when a force exerted on the membrane by a fluid exceeds a predetermined amount, and wherein the rod comprises a barb that extends radially-outward therefrom that prevents the rod from moving from the second position back to the first position.

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