Hugh DeHaven

DeHaven was born in 1895 in Brooklyn, New York. His father was a steel worker and inventor. He attended Fessenden School in West Newton, Massachusetts from 1906 to 1909 before attending The Hill School in Pottstown, Pennsylvania from 1909 to 1914. Following graduation DeHaven attended Cornell University from 1914 to 1915, and Columbia University from 1915 to 1916. He tried to join the US Army Air Corps in 1916, but was rejected. He joined the Royal Flying Corps Canada in Toronto, Ontario, Canada.[http://www.med.cornell.edu/archives/pdf/personal_aids/DeHaven.pdf The Hugh DeHaven, PhD (1895-1980) Papers]

While training as a pilot during the First World War, DeHaven survived a plane crash.[http://www.exodyne.com/dsi_hugh_dehaven.php5 Hugh DeHaven] {{webarchive|url=https://web.archive.org/web/20110605003228/http://www.exodyne.com/dsi_hugh_dehaven.php5 |date=2011-06-05 }} - Dynamic Sciences Inc While recuperating from a ruptured pancreas, he tried to understand why he, and only he, survived that crash,{{cite web |url=http://safetysells.org/chapter1.pdf |author=Albaum M |title=Safety Sells: Market Forces and Regulation in the Development of Airbags |pages=Chapter 1. p 3 |archive-url=https://web.archive.org/web/20160304142439/http://safetysells.org/chapter1.pdf |archive-date=2016-03-04 |url-status=dead }} noting that his cockpit was the only one that remained intact.

Hugh Robertson DeHaven was an inventor of long standing. Between 1924 and 1933 DeHaven filed seven patent applications related to his design of a self-sharpening single edge safety razor. Between approximately 1930 and 1936 his De Haven Razor Corporation marketed a number of different models based upon these designs. DeHaven himself retired in 1933.

In 1933, DeHaven survived a traffic accident which added to his interest in safety from his earlier airplane crash, and he began experimenting with crash testing using eggs.{{Cite book |last=Johnson |first=Steven |authorlink=Steven Johnson (author) |title=Extra Life |publisher=Riverhead Books |year=2021 |isbn=978-0-525-53885-1 |edition=1st |pages=177 |language=en}}

In 1939, DeHaven recommended the use of helmets and seat belts at a 45° angle in airplanes. He created the inertial reel and the concept of the "delethalized" instrument panel.

DeHaven rejoined Cornell in 1942 as a research associate and started the Cornell Crash Injury Research (CIR) program.{{cite web|url=http://www.shhofi-online.org/inductees/Bios/dehaven90.htm |title=Safety and Health Hall of Fame |archive-url=https://web.archive.org/web/20120305183427/http://www.shhofi-online.org/inductees/Bios/dehaven90.htm |archive-date=2012-03-05 |url-status=dead}} Based on his work, DeHaven published the classic Mechanical analysis of survival in falls from heights of fifty to one hundred and fifty feet, concluding that:

::The human body can tolerate and expend a force of two hundred times the force of gravity for brief intervals during which the force acts in transverse relation to the long axis of the body. It is reasonable to assume that structural provisions to reduce impact and distribute pressure can enhance survival and modify injury within wide limits in aircraft and automobile accidents.{{cite web |url=http://safetysells.org/chapter1.pdf |author=Albaum M |title=Safety Sells: Market Forces and Regulation in the Development of Airbags |pages=Chapter 1 |access-date=2007-09-05 |archive-url=https://web.archive.org/web/20160304142439/http://safetysells.org/chapter1.pdf |archive-date=2016-03-04 |url-status=dead }}[http://www.nader.org/index.php?/archives/1142-Head-KnockerHugh-DeHaven-and-Collision-Safety.html Head Knocker/Hugh DeHaven and Collision Safety]

In 1950, DeHaven published a report pointing to the second collision and the risk involved in vehicle ejection. He created the concept of "packaging" car occupants. He concluded:[http://www.sae.org/events/gim/presentations/2009/carlnash.pdf Hugh DeHaven - Still Relevant for Rollovers]

In 1953, the project split into two sub-projects, namely the Automobile Crash Injury Research (ACIR) and the Aviation Crash Injury Research (AvCIR) projects. Flight Safety Foundation takes over AvCIR (later Aviation Safety Engineering and Research (AvSER)), and continues the crash survival research started by DeHaven. AvSER is now part of Dynamic Science, Inc.[http://www.exodyne.com/exodyne_history.php5 History of Exodyne, Inc] {{webarchive|url=https://web.archive.org/web/20110604183154/http://www.exodyne.com/exodyne_history.php5 |date=2011-06-04 }}{{Cite web |url=http://www.jsfirm.com/companyprofile.asp_Q_job_E_3243_A_employer_E_Dynamic+Science,+Inc |title=Dynamic Science, Inc. |access-date=2011-04-01 |archive-url=https://web.archive.org/web/20110722040103/http://www.jsfirm.com/companyprofile.asp_Q_job_E_3243_A_employer_E_Dynamic+Science,+Inc |archive-date=2011-07-22 |url-status=dead }}

DeHaven was issued {{patent|US|2710649|"Combination shoulder and lap safety belt"}}[https://patents.google.com/patent/US2710649 US Patent 2710649] in 1955 for the first three-point seat belt.

::We will get into anybody’s automobile, go any desired distance at dangerous speeds, without safety belts, without shoulder harness, and with a very minimum of padding or other protection to prevent our heads and bodies from smashing against the inside of a car in an accident. The level of safety which we accept for ourselves, our wives and our children is, therefore, on a par with shipping fragile valuable objects loose inside a container.{{cite book |title=Accident Research. Methods and approaches |author=DeHaven H |chapter=Accident Survival-Airplane and Passenger Automobile |veditors=Haddon W, Suchman EA, Klein D |year=1964 |publisher=Harper & Rowe |location=New York }}

::"...people knew more about protecting eggs in transit than they did about protecting human heads"{{cite journal |author=DeHaven H |title=Mechanical analysis of survival in falls from heights of fifty to one hundred and fifty feet. 1942 |journal=Inj. Prev. |volume=6 |issue=1 |pages=62–8 |date=March 2000 |pmid=10728546 |pmc=1730592 |doi= 10.1136/ip.6.1.62-b|url=}}

• Air safety
• Crashworthiness

{{Reflist}}

• [https://web.archive.org/web/20110604220558/http://www.exodyne.com/dsi_history.php5 History of Dynamic Sciences Inc]
• [http://www.google.com/search?q=hugh+dehaven&hl=en&tbs=tl:1&tbo=u&ei=O8HES4zBOMH-8Abmh4i9Dw&sa=X&oi=timeline_result&ct=title&resnum=11&ved=0CC8Q5wIwCg Hugh DeHaven Timeline]
• [http://www.med.cornell.edu/archives/pdf/personal_aids/DeHaven.pdf List of archived works of Dr DeHaven]

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Category:20th-century American engineers

Category:Automotive safety pioneers

Category:Aviation inventors

Category:Aviation safety pioneers

Category:1895 births

Category:1980 deaths

Category:Seat belts

Category:The Hill School alumni

Category:Fessenden School alumni