Saw and impact resistant lock shackle
作者： Baruch Sfar , Warren M. Shwayder
DOI:
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摘要: A lock shackle formed of an elongated metal core having longitudinally extending shallow grooves in its surface, and a thin wall tube closely fitted around the core, with filled matrix hard carbide particles soft material binder.
lens.org 参考文章(3)
H Miller, Key operable padlock with slidable seal for plug ,(1971)
Thomas E Hale, William A Reich, Infiltrated cemented carbides ,(1969)
Glenn A Shaffer, William Scheithauer, Roger B Bargainnier, Art of making seamless hollow bodies from sinterable powders ,(1967)