(under subclass 229.1) Devices in which there is a single covering fabric for at least two of the elements of the unit. The covering fabric may form the flexible joint between adjacent strips, slats or panels in addition to covering the units. For the most part these are devices having two three-sided incomplete frames, the ends of the side pieces of the two frames abutting each other, and there being a single fabric.
SEE OR SEARCH THIS CLASS, SUBCLASS:
231+, for fabric joints between adjacent strips, slats or panels only.
379, for single frames having single fabrics with intermediate reinforcing bars, members or braces.
SEE OR SEARCH CLASS
105, Railway Rolling Stock,
16+, for similar structures used as diaphragms between two articulated railroad cars.
