Lloyd Espenschied

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Lloyd Espenschied
Lloyd Espenschied and Herman Affel.jpg
From left to right are: Lloyd Espenschied and Herman Affel circa 1950-1960
Born (1889-04-02)April 2, 1889
St. Louis, Missouri
Died June 1, 1986(1986-06-01) (aged 97)
Flushing, New York
Residence United States
Nationality American
Fields Electrical engineering
Notable awards IEEE Medal of Honor (1940)

Lloyd Espenschied (27 April 1889 – June 1, 1986) was an American electrical engineer who invented the modern coaxial cable with Herman Andrew Affel.[1]


He was born in St. Louis, Missouri on April 27, 1889.[1]

In 1901, he moved to Brooklyn, New York. He became an amateur radio operator in 1904 and later worked for the United Wireless Telegraph Company. He was graduated from the Pratt Institute in 1909 and then worked as an engineer for Telefunken Wireless Telegraph Company.[2]

In 1916 while at Bell Telephone Laboratories, he developed the first modern coaxial cable with Herman Affel.[2][3]

In 1924, he invented the radio altimeter.[4][5]

He was an avid genealogist of the Espenschied/Esbenshade/Espenshade family, visiting Germany for the purpose of extensive research. He discovered that all bearers of this name can trace roots back to a common ancestor, Thomas Espenschied, who was born during the turbulent period of the Thirty Years' War (1618–1648), and who lived with his wife Judith (née Lotz) in Kriegsfeld. One son remained in Kiegsfeld. Three sons settled in Siefersheim, which became the starting point for the main branches of the family. Today many families named Espenschied live in Siefersheim.

Lloyd Espenschied died on June 1, 1986, at a nursing home in Holmdel, New Jersey.[1]


  1. ^ a b c "Lloyd Espnschied, One Of The Inventors Of The Coaxial Cable". New York Times. July 4, 1986. Retrieved 2011-11-18. Lloyd Espenschied, co-inventor of the coaxial cable, which paved the way for television transmission, died June 21 at a nursing home in Holmdel, N.J. He was 97 years old and lived in Kew Gardens, Queens. Mr. Espenschied, an electrical engineer, was a member of the technical staff at the American Telephone and Telegraph Company Bell Laboratories and holder of more than 100 patents in both wire and radio communications systems. He retired as staff research consultant in 1954, after 43 years with the company. 
  2. ^ a b "Lloyd Espenschied". IEEE. Retrieved 2011-11-15. 
  3. ^ "Lloyd Espenschied Papers". Smithsonian Institution. Retrieved 2011-11-18. Espenschied was born in St. Louis and graduated from Pratt Institute in electrical engineering, 1909; on staff of the Telefunken Wireless Telegraph Company, 1909-10; worked for American Telephone and Telegraph Company in various capacities, 1910-34; directed high-frequency transmission development for Bell Telephone Laboratories, 1934-37. ... 
  4. ^ "Radio Altitude: The instrument of choice". Cygnus Interactive. 
  5. ^ "Towers Flash Radio Beams To Detect Warplanes" Popular Mechanics, September 1941