Title:
DRIVER BIT
Document Type and Number:
Japanese Patent JP2014188610
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a driver bit capable of removing M3, M4 screws of a different type by one driver bit without replacing, and capable of smoothly removing the loosened screws from the driver bit with the reduced risk of a fitting part on the tip fixed to the cross recess of the screws.SOLUTION: The driver bit comprises a fitting part 2 fitted to a cross recess formed in a head part of a screw of a separation object on the tip. The fitting part comprises blades 3 each extending in a radial shape from an axis and formed every 90 degrees in the circumferential direction, and guide grooves each formed between the blades 3, to have a cross shape in a front view. An distance between apices on the tip of the blades arranged in an opposed position is set in a range of 1.45 mm-1.75 mm. A distance between bottoms on the tip of the guide grooves arranged in the opposed position is set in a range of 1.15 mm-1.35 mm.
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Inventors:
TADA RIYUUSUKE
KUSANAGI MASAYUKI
INOUE TAIJI
ARAI YOSHIAKI
KUSANAGI MASAYUKI
INOUE TAIJI
ARAI YOSHIAKI
Application Number:
JP2013064850A
Publication Date:
October 06, 2014
Filing Date:
March 26, 2013
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B25B15/00
Domestic Patent References:
| JP2001300860A | 2001-10-30 | |||
| JP3109690U | 2005-05-19 | |||
| JP2001300860A | 2001-10-30 |
Foreign References:
| US20060112797A1 | 2006-06-01 | |||
| US20060112797A1 | 2006-06-01 |
Attorney, Agent or Firm:
Masatake Shiga
Norio Takahashi
Yuji Masui
Fumihiro Hosokawa
Norio Takahashi
Yuji Masui
Fumihiro Hosokawa