US PATENT SUBCLASS 400 / 490
.~ Key-cap or key-stem structure

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

472  DF  KEY-BOARD OR KEY LEVER-ACTUATING MECHANISM {12}
490.~ Key-cap or key-stem structure {5}
491  DF  .~.~> Including cushioning means (e.g., yieldable surface) {2}
492  DF  .~.~> Adjustable in plane of key(s) (e.g., to facilitate reach, rotatable, etc.)
493  DF  .~.~> Including character-bearing disc on key cap {1}
494  DF  .~.~> Having raised or recessed character
495  DF  .~.~> Including means for mounting key cap or key stem {1}

DEFINITION

Classification: 400/490

Key-cap or key-stem structure:

(under subclass 472) Subject matter wherein significance is attributed to a key* cap, which key cap is that part of a key element that is engaged by a finger of the typist during pressing of the key or is visible to the typist and bears a character* symbol corresponding to the character that will be imprinted on the record-medium* when the key is pressed, or wherein significance is attributed to a key stem, which key stem is that part of a key element that connects the key cap to the key lever.