John E. Rode founded Temper Corporation in 1969, and has been engineering solutions and manufacturing bearing adjustment products for industrial and commercial vehicle bearing assemblies. He founded Temper Axle Products Corporation in 2006 to make and distribute Temper EMT (Endplay Measuring Tool) with special wrenches for adjusting wheel end bearings to TMC recommended endplay settings, and Doctor Preload bearing adjustment tools for setting SAE recommended preloads, along with Temper-Loc premium single nut spindle nuts. Rode, a mechanical engineer, has a BSME from Iowa State University and an MSME from the University of New Mexico. He is the inventor of record on more than 100 U.S. and foreign patents, and was named Entrepreneur of the Year in New York State in 2001.?