Boom length operating radius indicator and warning device
作者： M Hamilton
DOI:
关键词:
摘要: A system for use with cranes which have booms that may be varied in length and angular relationship continuously displays the operating radius provides a display of boom by pressing button alarms to operator both boom.
lens.org 参考文章(4)
Hansbrough David Lee, Greb Franklin H, Young David J, Load limit control for hoisting equipment ,(1968)
Sidney G Knight, Safety control for cranes ,(1964)
Martin W Hamilton, Crane operating radius indicator ,(1968)
Henry L Mason, Crane warning system ,(1960)