Hand-Switch Unit For Use With Protective Suit
Unit containing two hand-operated switches water-tight and designed for use with protective suit. One switch is toggle switch used to select communication by wire or radio. Other switch is press-to-talk button. User grasps and operates switches without looking at them. Fences on top of new unit protects toggle switch from inadvertent operation and spaced to accommodate gloved thumb. Push-to-talk button protected by longitudinal bar, springy and compressed inward to actuate button.
Chalson, Howard E.↗