发明名称 |
NAGEL MIT VERSCHIEDENEN HALTEEIGENSCHAFTEN ENTLANG SEINES SCHAFTES |
摘要 |
A nail designed to be initially driven through a first board, and into a second board so as to assemble the boards with the boards engaging each other, and to be subsequently pulled or removed, as by means of a crowbar or a claw upon a hammer head, so as to disassemble the boards is disclosed as including a head and a shank with a pointed end. A relatively smooth portion of the shank extends axially from the pointed end for a substantial distance. A relatively rough portion, which is formed with annular, frustoconical rings defining annular grooves, extends axially from the relatively smooth portion toward the head for a distance approximately equal to the thickness of the first board. A relatively smooth portion extends axially between the relatively rough portion and the head. The nail has differential holding capabilities per unit length along its shank, when driven the wooden boards. |
申请公布号 |
DE4026784(A1) |
申请公布日期 |
1991.03.21 |
申请号 |
DE19904026784 |
申请日期 |
1990.08.24 |
申请人 |
ILLINOIS TOOL WORKS INC., CHICAGO, ILL., US |
发明人 |
SCHIEDERMEIER, HENRY, NILES, ILL., US |
分类号 |
F16B15/00;F16B15/02;F16B15/06 |
主分类号 |
F16B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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