Tamper resistant construction for hydrant actuating nut

作者: Bradley J. Julicher , Thomas R. Lanham

DOI:

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摘要: A tamper resistant construction for preventing unauthorized actuation of the hydrant nut a fire by causing any lateral pounding or upward forces applied to be transmitted directly body cover including packing threaded into proximate nut, actuating located within and mounted on in turning relationship therewith, shroud permanently removably rotatably closely spaced cap body, configuration between receiving special wrench.

参考文章(19)
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Durham S. McCauley, John W. Erwin, John K. Waite, Tamperproof construction for hydrant actuating nut ,(1989)