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Patent Searching and Data


Title:
SCREW
Document Type and Number:
Japanese Patent JP2015001241
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a screw for preventing the painting of the head of a screw from being scraped, when a driver bit is brought into engagement with the head of a screw.SOLUTION: A screw 1 has a head 2 formed on the surface with an engagement part 10 or a hole, with which a driver bit engages. The engagement part 10 comprises: a central part 11 arranged on the shaft core of the screw 1; a plurality of groove parts 12 individually extending radially from the central part 11; and inclined parts 13 inclined downward from a surface 21 toward the central part 11 between the mutually adjacent groove parts 12.

Inventors:
KITAZONO SHIRO
Application Number:
JP2013124870A
Publication Date:
January 05, 2015
Filing Date:
June 13, 2013
Export Citation:
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Assignee:
UNION SEIMITSU KK
International Classes:
F16B23/00
Domestic Patent References:
JP2000145739A2000-05-26
JP3135707U2007-09-27
JP2011226520A2011-11-10
JP4622867B22011-02-02
Attorney, Agent or Firm:
Takeshi Sato