(under subclass 238) Roll type devices in which at least one dimension of the roll unit is variable, other than by unrolling or rolling up the fabric. The change in lineal dimension may be made by permanently shortening a part definitely constructed to be shortened.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21, for extensible flexible or portable panels (including roll type panels) combined with hoods, canopies, shields storage chambers or outrigged rigid panels.
250, for shiftable position extensible rollers.
SEE OR SEARCH CLASS
211, Supports: Racks, 105.3+, for extensible rod racks.
242, Winding, Tensioning, or Guiding,
529, 571+, and 578+ for adjustable winding or unwinding spool or mandrel.
