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Title:
FITTING SCREW FOR CORRUGATED PLATE MADE OF POLYVINYL CHLORIDE OR POLYCARBONATE
Document Type and Number:
Japanese Patent JP2003013926
Kind Code:
A
Abstract:

To provide a fitting screw for a corrugated plate made of polyvinyl chloride or polycarbonate preventing cracks on them which happen to arise after use of conventional fitting screws for corrugated plate.

A cutting blades 2 having a shape capable of opening a larger hole than the outer diameter below the neck by the rotation of a screw in polyvinyl chloride or polycarbonate corrugated plate is formed in the screw 1 and a washer 3 and a packing 4 are combined.


Inventors:
Ito, Akihiko
Application Number:
JP2001000239940
Publication Date:
January 15, 2003
Filing Date:
July 02, 2001
Export Citation:
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Assignee:
ITO AKIHIKO
International Classes:
E04D3/36; F16B25/00; F16B35/00; (IPC1-7): F16B35/00; E04D3/36; F16B25/00