Title:
SCREWDRIVER BIT WITH SCREW SUPPORTER AND SCREWDRIVER
Document Type and Number:
WIPO Patent Application WO/2010/101341
Kind Code:
A1
Abstract:
The present invention relates to a screwdriver bit and a screwdriver with the same, more specifically to a screwdriver bit that supports a screw using a screw supporting cylinder so as to prevent the separation of the screw being driven and secure the screw accurately in the desired position, and also to a screwdriver including the screwdriver bit. The screwdriver bit comprises: a screw grip part providing torque to a screw, a coupling part inserted into a driver handle or a bit insertion part of an electric driver, and a rod-shaped body connecting the screw grip part and the coupling part. The screwdriver bit also includes an elastic member providing elastic force in the longitudinal direction of the body, a screw supporting cylinder which surrounds the exterior of the body and is applied with the elastic restoration force by the elastic member toward the coupling part, thereby being able to protrude beyond the screw grip part, and a fixed cylinder which is rotated along with the body and one end of which is fixed between the screw supporting cylinder and the coupling part.
Inventors:
CHOI SANG HO (KR)
Application Number:
PCT/KR2009/005518
Publication Date:
September 10, 2010
Filing Date:
September 28, 2009
Export Citation:
Assignee:
CHOI SANG HO (KR)
International Classes:
B25B23/08; B25B15/02; B25B21/00; B25B23/04
Foreign References:
| KR20000014980U | 2000-07-25 | |||
| JPS57131267U | 1982-08-16 | |||
| JPS63201070U | 1988-12-26 | |||
| JPS52170397U | 1977-12-24 |
Attorney, Agent or Firm:
LEE, DONG KUK (KR)
이동국 (KR)
이동국 (KR)
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