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Method and device for securely storing data

  • US 7,286,944 B2
  • Filed: 02/09/2005
  • Issued: 10/23/2007
  • Est. Priority Date: 01/24/2002
  • Status: Expired due to Term
First Claim
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1. A system for providing reliable, unalterable mechanical data associated with the mechanical properties of a concrete mass, comprising:

  • a logger in the concrete mass, comprising;

    one or more sensors to measure physical properties of the concrete mass and to generate data associated with the physical properties;

    a microprocessor that receives the data from the sensor and calculates maturity data and mechanical strength data; and

    a first memory device for storing the mechanical strength data within the concrete mass in an unalterable form;

    a second memory device located outside the concrete mass; and

    an outbound data transfer device to transfer the mechanical strength data from the first memory device to the second memory device.

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