Title:
DRIVER BIT
Document Type and Number:
Japanese Patent JP3785305
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a driver bit capable of sufficiently relieving the impact in fastening with simple working.
SOLUTION: As a bit shaft 3 is provided with a hollow part 5 formed by a through hole 6, the impact received in the completion of fastening can be relieved by the hollow part 3a, and the impact to a driving blade 2 can be reduced, whereby the fracture of the driving blade 2 can be prevented. In this invention, as plural through holes 6 are formed in plural stages, a part having low rigidity is dispersed over a predetermined length, whereby the impact in fastening can be dispersed, and the fracture of the hollow part 3a can be prevented.
Inventors:
Minoru Takahashi
Application Number:
JP2000169670A
Publication Date:
June 14, 2006
Filing Date:
June 06, 2000
Export Citation:
Assignee:
Nitto Seiko Co., Ltd.
International Classes:
B25B15/00; (IPC1-7): B25B15/00
Domestic Patent References:
| JP56132074U | ||||
| JP3071860U | ||||
| JP9508323A | ||||
| JP451372U |
Other References:
「TRADE PAGES 2000年 5月号」,台湾文筆国際貿易雑誌社,61頁
台湾実用新案公告第417555号公報
台湾実用新案公告第417555号公報
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