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Manual cursor actuator for electronic keyboards

  • US 4,786,768 A
  • Filed: 08/20/1987
  • Issued: 11/22/1988
  • Est. Priority Date: 08/20/1987
  • Status: Expired due to Fees
First Claim
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1. A manual actuator for arrow keys arranged on a data input keyboard in accordance with a standard array comprised of four arrow keys arranged in a cross and four corner keys at the four corners thereof, said manual actuator comprising:

  • a housing;

    eight fingers pivotally mounted in said housing and arranged according to said standard array, each said finger having an inner end and an outer end and mounted such that said outer end is displaced downward below said bottom surface of said housing upon pivoting of said finger, said eight fingers comprising four arrow fingers arranged to align said outer ends thereof with said arrow keys and four corner key fingers arranged to align said outer ends thereof with said corner keys when said housing is positioned over said keyboard;

    first biasing means for biasing said outer ends of said arrow fingers upward;

    second biasing means for biasing said outer ends of said corner key fingers upward, said second biasing means providing stronger resistance than said first biasing means;

    a control shaft mounted in said housing in pivotal manner toward said fingers such that engagement of said control shaft with any said finger causes said finger to move downward below said housing; and

    means for stably mounting said housing to a keyboard.

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