Stenographic keyboard device providing extended set of keys and method for electronically adjusting key depth sensitivity
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United States of America Patent
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Mar 25, 2014
Grant Date -
May 26, 2011
app pub date -
Jan 18, 2011
filing date -
Mar 12, 2004
priority date (Note) -
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Abstract
A keyboard assembly for a stenographic machine includes character keys with a first set of vowel keys that, at a first rest position, together define a first upper touch surface plane, a second set of keys that, at a second rest position, together define a second upper touch surface plane that is higher than the first plane, with each of the second set of keys having a fully depressed position lower than the second plane by a given distance and a key actuator to be operationally connected to a respective key sensor for registering movement of the respective key. A third key assembly has a third assembly key with an upper touch surface that, at a third rest position, is further from the second upper touch surface plane than the given distance, and a third key actuator to be operationally connected to a respective third-key-assembly key sensor for registering movement of the at least one key.
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