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Ingestible animal temperature sensor

  • US 6,099,482 A
  • Filed: 12/11/1998
  • Issued: 08/08/2000
  • Est. Priority Date: 08/22/1997
  • Status: Expired due to Term
First Claim
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1. An ingestible bolus for ingestion in a stomach of a ruminant animal, comprising:

  • a housing including two housing halves, each of said halves comprised of a biologically inert material, each of said housing halves consisting essentially of plastic;

    a plurality of electrical components disposed within said housing, said electrical components including a power source, an air-borne signal transmitter for transmitting a data burst, and an antenna connected with said transmitter, said antenna disposed entirely within one said plastic housing half; and

    means for ballasting said housing with a weight sufficient to maintain said bolus within the stomach of the ruminant animal, said ballasting means being disposed entirely within an other said plastic housing half, said ballasting means including a ferric metal material.

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