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Refreshable Braille display unit

  • US 6,827,512 B1
  • Filed: 04/14/2003
  • Issued: 12/07/2004
  • Est. Priority Date: 04/14/2003
  • Status: Expired due to Fees
First Claim
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1. A refreshable display unit comprising,a housing;

  • a plurality of refreshable cells housed in the housing, each cell comprising;

    (i) a guide block having six holes, (ii) six DC motors (pager type), preferably with all the motors oriented in the same direction, (iii) each motor having a coupler which may be rotated by the motor, (iv) a pin fastened to each coupler and extending into engagement with one of the holes of the guide block, and (v) a stop bar mounted on each coupler for engaging stop pins mounted on the housing for limiting the rotation of the coupler, (vi) the placement of the stop pins on the housing being such that it controls the height extension of the pin fastened to the coupler with respect to the guide block, a safety bar mounted on the housing for protecting the pins, and means for connecting the display unit to the electronic means of a computer.

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