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.
George Corliss was not the inventor of the modern steam engine. James Watt is largely identified as the father of the modern steam engine. The watt, a unit of work, is named after James Watt. George Corliss is important as he invented a shuttle type valve which allowed the steam engine to be very efficient.