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System and method for controlling temperature indicators

  • US 8,029,191 B2
  • Filed: 02/21/2008
  • Issued: 10/04/2011
  • Est. Priority Date: 10/11/2006
  • Status: Expired due to Fees
First Claim
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1. A temperature indicator stick system configured to indicate a predetermined temperature when exposed to the predetermined temperature, the temperature indicator stick system comprising:

  • a housing having an interior configured to receive a temperature indicator stick;

    a drive roller supported by the housing to engage the temperature indicator stick, the housing including a first opening configured to allow the temperature indicator stick to advance out from and retract into the housing and a second opening through which the drive roller extends to engage the temperature indicator stick;

    wherein the temperature indicator stick includes a keyed shape and the first opening has geometry matched to the keyed shape; and

    wherein rotation of the drive roller causes at least one of retraction and advancement of the temperature indicator stick to and from the interior of the housing.

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