Two factors dictate the design of an ideal brace: 1  Joints adjacent to the thumb CMC joint must be excluded to maximize function when wearing the brace; thus a design using three points of pressure cannot be used. 2  The brace must specifically prevent CMC dorsal translation.
Expansion valve. An expansion valve is a valve used for different purposes: Steam engines. A valve used to control the expansion of steam: Expansion valve (steam engine) The best-known of these was the Meyer expansion valve, the invention of Jean-Jacques Meyer.
Probably the most historically significant engine ever in production was the Otto-. Langen atmosphere engine, designed and produced by Nicolaus Otto and Eugene. Langen between 1864 and 1878. It was an important stepping stone for the. introduction of the 4 stroke cycle engine later developed by Otto in 1876.