| 发明名称 |
BOLT |
| 摘要 |
A bolt including a head portion, a shaft portion, and an external thread formed in the shaft portion, the bolt having: a plurality of thread collapsed rib portions each of which is composed of projecting portions that are arranged in a longitudinal direction of the shaft portion, each projecting portion being formed by collapsing a top portion of a screw thread of the external thread and by raising both sides of the collapsed top portion of the screw thread, wherein one projecting portion of the thread collapsed rib portion has a shape different from that of another projecting portion that is adjacent in a circumference direction of the screw thread of the adjacent thread collapsed rib portion in the shaft portion, such that an interference position with a counterpart internal thread varies in accordance with screw-engagement with the counterpart internal thread. |
| 申请公布号 |
US2016091012(A1) |
申请公布日期 |
2016.03.31 |
| 申请号 |
US201514625247 |
申请日期 |
2015.02.18 |
| 申请人 |
IWATA BOLT KABUSHIKI KAISHA |
发明人 |
KONDO Kota |
| 分类号 |
F16B39/30 |
主分类号 |
F16B39/30 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A bolt including a head portion, a shaft portion, and an external thread formed in the shaft portion, the bolt comprising:
a plurality of thread collapsed rib portions each of which is composed of projecting portions that are arranged in a longitudinal direction of the shaft portion, each projecting portion being formed by collapsing a top portion of a screw thread of the external thread and by raising both sides of the collapsed top portion of the screw thread, wherein one projecting portion of the thread collapsed rib portion has a shape different from that of another projecting portion which is adjacent in a circumference direction of the screw thread of the adjacent thread collapsed rib portion in the shaft portion, such that an interference position with a counterpart internal thread varies in accordance with screw-engagement with the counterpart internal thread. |
| 地址 |
Tokyo-to JP |
