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Commercial Tree Chipper Safety Control Bar Activation Analysis

[+] Author Affiliations
Dennis B. Brickman

Engineering Systems Inc., Aurora, IL

Paper No. IMECE2011-64750, pp. 387-395; 9 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 9: Transportation Systems; Safety Engineering, Risk Analysis and Reliability Methods; Applied Stochastic Optimization, Uncertainty and Probability
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5495-2
  • Copyright © 2011 by ASME


This paper addresses the ability of a human worker to activate safety devices to stop and reverse the mechanical infeed system inside a commercial tree chipper infeed hopper. Studies were performed using a tray equipped commercial tree chipper incorporating a safety control bar and safety cables to stop and reverse the mechanical infeed system. The test results indicate that the human test subject was able to successfully activate the safety control bar and the safety cables from a variety of body positions around and within the tree chipper infeed hopper.

Copyright © 2011 by ASME



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