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Patent Searching and Data


Title:
SCREW AND SCREWDRIVER AVAILABLE FOR VARIABLE SIZE IN COMMON
Document Type and Number:
Japanese Patent JP2013002629
Kind Code:
A
Abstract:

To improve efficiency and robustness of screw driving work and to provide a screw that is hardly rusted by providing a set of a screw and a screwdriver having a structure where work can be performed using a single screwdriver even for screws in different sizes.

A screw is notched to widen roots radially from the center of the screw to the periphery. By using a single screwdriver having a sufficient size for screws having different apertures and various sizes, the center axes of the screw and the screwdriver are matched automatically and by mutually fitting contact faces of the both, a rotational force (torque) at the tip of the screwdriver is surely transferred to the screw, thereby performing efficient and robust work.


Inventors:
SAWAI HIDEFUMI
Application Number:
JP2011150416A
Publication Date:
January 07, 2013
Filing Date:
June 20, 2011
Export Citation:
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Assignee:
SAWAI HIDEFUMI
International Classes:
F16B23/00; B25B15/00