US PATENT SUBCLASS 400 / 157.4
.~.~.~.~ Hammer(s) mounted on endless belt or in helical array

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}
157.4.~.~.~.~ Hammer(s) mounted on endless belt or in helical array

DEFINITION

Classification: 400/157.4

Hammer(s) mounted on endless belt or in helical array:

(under subclass 157.1) Subject matter wherein the striking member(s) is/are supported on an elongated, closed-loop strip trained around two or more pulleys and movable in the direction of its elongation, or wherein the striking members are supported on a rotatable, cylindroidal component and are arranged in a helix around the circumference of said component.