US PATENT SUBCLASS 400 / 157.3
.~.~.~.~ For variable impression (e.g., impact control)

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

139  DF  INCLUDING TYPE-SET-ASSEMBLAGE MOUNTED ON CARRIER AND RELATIVELY MOVABLE FOR SELECTION AND FOR IMPACT OF TYPE-FACE {11}
153  DF  .~ Imprint by movement of record-medium against type-face {3}
154  DF  .~.~ By hammer impacting record-medium against type-face on type-head (e.g., type shuttle, etc.) {3}
157.1  DF  .~.~.~ Including particular structure of hammer(s) {3}
157.3.~.~.~.~ For variable impression (e.g., impact control)

DEFINITION

Classification: 400/157.3

For variable impression (e.g., impact control):

(under subclass 157.1) Subject matter wherein movement of the striking member is regulated as to its striking force, whereby the striking force can be changed as desired.

SEE OR SEARCH THIS CLASS, SUBCLASS:

116, for impact control in a typewriter wherein a type-head* moves toward the record-medium.