Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SPIRAL DRIVING SYSTEM FOR FASTENER WITH THREAD
Document Type and Number:
Japanese Patent JP2010249321
Kind Code:
A
Abstract:

To provide a fastener fitted with threads having a recess to admit engagement of a driver, easily manufacturable, excellent in the strength, and with the recess being shaped so as to allow easy mounting and removal.

The fastener 10 with threads includes a recess 18 to admit engagement of the driver, and the continuous walls 24 and 26 of the recess 18 are shaped spiral. The spiral shape is such that the vertical distance between the two spirals fore and aft when the fastener 10 is rotated by a certain angle, is constant over the whole length of the spirals.


Inventors:
Stacy, Dodd W.
Application Number:
JP2010000132495
Publication Date:
November 04, 2010
Filing Date:
June 09, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
PHILLIPS SCREW CO
International Classes:
F16B23/00; B21K1/46; B25B15/00
Domestic Patent References:
JPS55144975A
JPS2915420Y1
Attorney, Agent or Firm:
生田 哲郎