.~ Reciprocating or oscillating to or from alternating rotary {6}
89.15
.~.~ Including screw and nut
DEFINITION
Classification: 74/89.15
(under subclass 89) Mechanical movement comprising a rotary element having spiral threads or grooves disposed concentrically about its axis of rotation and a second element enmeshed therewith for relative movement along said axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
424.8, for other mechanism containing screw and nut elements.
