Abstract: A positionally neutral, liquid tight signaling device includes an electrical contact switch remotely actuated by a pneumatic squeeze bulb. A gas permeable, flexible diaphragm divides the internal chamber of the signaling device into a switching portion and an isolated actuating portion. First and second electrical contacts within the switching portion are biased into an open circuit position by a compression spring. The selective collapsing of the squeeze bulb creates an overpressure in the actuating portion of the internal chamber, collapsing the diaphragm and shifting the two electrical contacts into abutting, electrically conducting relationship.

Abstract: Disclosed is a fully portable medical I.V. equipment stand/pole (12). This invention is a triple sectioned telescoping mast assembly (13),(14),(15), with each section able to be locked into the other by means of an internal rotary cam-clutch (16),(17),(18),(19), which maintains a desired height of I.V. fluid or feeding solution above the patient regardless if the patient is ambulatory or in bed. Opening or closing of the I.V. equipment stand/pole is accomplished with a single movement of a control handle(24) which controls the mast assembly support legs(23). Fluids and feeding solutions are hung from the hanger rod assembly (30,),(31),(32). A control knob (32) frees or restricts horizontal movement of the hanger rods (30), and the circular rotation of the entire assembly (30),(31),(32).