How Mug Warmers Work


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Sources

  • Lueth, R.C. "Electric heating coil." U.S. Patent 4554441, 1985. (Feb. 16, 2009) http://www.freepatentsonline.com/4554441.html
  • Peace, P.W. "Beverage warming apparatus." U.S. Patent 4463664, 1984. (Feb. 16, 2009) http://www.freepatentsonline.com/4463664.html
  • Efunda.com. "The principles of heat transfers." (Feb. 16, 2009) http://www.efunda.com/formulae/heat_transfer/home/overview.cfm
  • WiseGeek.com. "What is an electric mug warmer?" (Feb. 16, 2009)http://www.wisegeek.com/what-is-an-electric-mug-warmer.htm