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.
Confidence votes 51.8K. Richard B. Spikes was an African American inventor from Sacramento, California whose patents include an automatic car wash, an automobile directional signal, and an automobile gear shift. There is a record of his patents beginning in 1910 with a beer keg tap.