(under subclass 221) Device including a screw-nut type actuating means and additional actuating mechanism, which mechanism effects a shift of the internally threaded member of said screw-nut means.
(1) Note. The nut usually carries the screw along with it as said nut is shifted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
240+, for patents for a holder with screw-nut type actuating means and see notes thereunder for related subclasses and definition of screw-nut type mechanism.