Title:
BOLT, NUT, AND FASTENING JIG
Document Type and Number:
Japanese Patent JP2000035027
Kind Code:
A
Abstract:
To prevent the easy removal of an object after fastening the object once with surplus work eliminated.
A head part 1a and nut 2 of a bolt 1 are formed into a truncated cone state having a large diameter on the seat surface side. Two wedgelike grooves 2a for applying force only in a fastening direction are formed on the head top surface of the nut 2. Consequently after an object is fastened once by simple structure, easy artificial removal can be impossible.
Inventors:
TAKIZAWA KENICHI
ARAKI KENJI
ARAKI KENJI
Application Number:
JP20637898A
Publication Date:
February 02, 2000
Filing Date:
July 22, 1998
Export Citation:
Assignee:
SUMITOMO METAL IND
International Classes:
F16B35/06; F16B37/00; F16B41/00; (IPC1-7): F16B41/00; F16B35/06; F16B37/00
Attorney, Agent or Firm:
Mizogami Miyoshi (1 person outside)
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