US PATENT SUBCLASS 400 / 481
.~.~ By regulating key force or movement (e.g., key dip or stroke)


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

472  DF  KEY-BOARD OR KEY LEVER-ACTUATING MECHANISM {12}
480  DF  .~ Including control of key action (e.g., buffer, etc.) {1}
481.~.~ By regulating key force or movement (e.g., key dip or stroke)


DEFINITION

Classification: 400/481

By regulating key force or movement (e.g., key dip or stroke):

(under subclass 480) Subject matter wherein significance is attributed to the governing of the amount of pressure applied by the typist to the key* elements of the typewriter or to the distance that the fingers of the typist move during pressing of the key elements.