Concept by Otto Schueller, patented by Davis, Moore, Ritzinger and Whitmore at USAFSAM. Passive suit design with pressurization bladders containing closed gas cavities and a breathing bladder connected through the helmet regulator and aneroid-operated visor. Studies to 23 km using the system. Further developed by David Clark Company.

• 487 - Sears, William J, A Historical Review of Partial and Full Pressure Suits, . HTML when accessed: http://webpages.charter.net/mcelwain/PSUITS-Chronology.htm