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Digitizer pen

  • US 20030173121A1
  • Filed: 03/18/2002
  • Published: 09/18/2003
  • Est. Priority Date: 03/18/2002
  • Status: Active Grant
First Claim
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1. A digitizer pen system comprising:

  • (a) a pen having an elongated body terminating in a writing tip, said pen including a writing element removably inserted into said writing tip and at least one ultrasound transducer deployed adjacent to said writing tip, said writing element having an end protruding from said writing tip; and

    (b) an extraction tool including a plurality of flexible leaves deployed around a central position and spaced such that, when said extraction tool is pressed onto said protruding end of said writing element, said flexible leaves grip said protruding end so as to facilitate extraction of said writing element.

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