×

Card reading apparatus having a passive electrical speed controller

  • US 4,914,279 A
  • Filed: 01/19/1989
  • Issued: 04/03/1990
  • Est. Priority Date: 12/05/1985
  • Status: Expired due to Fees
First Claim
Patent Images

1. A card reading apparatus comprising:

  • guide means for guiding movement of a card along a path;

    transducer means for detecting information recorded on said card as said card is moved along said path;

    energy store means for elastically storing energy as said card is inserted into said guide means and moved along said path by an insertion force, said energy store means further for moving said card along said path towards expulsion from said guide means in response to removal of said insertion force; and

    controller means for controlling the rate of movement of said card along said path;

    said controller means comprising a D.C. electrical generator operative to produce across its output terminals and electromotive force proportional in sense and magnitude to the direction and velocity respectively of said card;

    said generator having an electrical load including at least one unidirectional current conducting device connected across said output terminals, said unidirectional current conducting device being driven to a conducting state when the produced electromotive force reaches a predetermined magnitude.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×