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


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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.