The disclosure is of means for connecting two bodies in abutting surface-to-surface relation by means of interfitting hooks and recesses, upon relative movement of the surfaces with respect to each other.
A display board assembly, which includes a start unit connected to an end unit with a variety of intermediate display units set in therebetween in a line. By means of color contrast and diaphaneity difference the symbols on the intermediate which show a certain meaning collectively can be clearly seen in the day. When in the dark, a photosensor automatically triggers the light emitting diodes of the intermediate display units to illuminate the symbols thereon.
A system for interlocking a plurality of modules, such as medical instrument modules (e.g., infusion pumps), in side-by-side relationship such that not more than one module can be mounted on each side of a center module. The modules are interchangeable in that any module of the system can be a center module or a side module. In the preferred embodiment, latching arms on a module are automatically moved as the module is mounted on a pole stand to allow other "side" modules to be mounted on that "center" module. The latching arms of the "side" modules prevent additional modules from being mounted on the side modules. Other embodiments are described as well.
One version of the barrier system may include a first barrier and a second barrier, in which each of the first and second barriers may have a support structure and an upwardly-extending structure. In addition, the first barrier may have a retaining structure adapted to facilitate retention of a portion of the upwardly-extending structure of the second barrier when one of the first and second barriers is in an inverted position. This inverted orientation may be especially advantageous when storing a pair of barriers. For example, in such an orientation, the barrier-pair may occupy less floor- or ground-space than two such barriers placed side-by-side. Moreover, depending on the height of the particular storage area, a second pair of similarly inverted barriers may be securely placed on top of the first pair. In this fashion, the barriers occupy relatively little storage space, space which typically is quite limited and therefore valuable.
