Title:
SCREW FASTENING BODY AND SCREW FASTENING AXIAL FORCE CONTROLLING METHOD
Document Type and Number:
Japanese Patent JP2002122120
Kind Code:
A
Abstract:
To provide a general purpose screw fastening body allowing visual observation and confirmation of fastening axial force.
This fastening body is constituted of a bolt 13 with a head part 13a, a nut 14 screwed and fastened on a screw shaft part 13b of the bolt 13 and a conical spring washer 15 fitted into the nut 14 relatively rotatable, uncapable of dropping off. A colored film naturally peeled is adhered and integrated to the surface of the conical spring washer 15 due to elastic deformation into a flat shape of the conical spring washer 15 receiving the fastening force.
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Inventors:
TANIZAKI SHIGE
Application Number:
JP2000312932A
Publication Date:
April 26, 2002
Filing Date:
October 13, 2000
Export Citation:
Assignee:
KFC LTD
International Classes:
B25B23/15; F16B31/02; F16B39/26; (IPC1-7): F16B39/26; B25B23/15; F16B31/02
Attorney, Agent or Firm:
Kenji Yamashita
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