Title:
NUT FALL PREVENTION DEVICE OF FASTENING DEVICE FORMED OF BOLT AND NUT
Document Type and Number:
Japanese Patent JP2003148440
Kind Code:
A
Abstract:
To provide a mechanism capable of surely preventing the possibility of falling of a nut from a bolt by external vibration.
This nut fall prevention device comprises the bolt 1 having a recessed groove 13 provided at the end part of a shaft lever 11 having a screw part 12, the nut 2 threaded to the screw part 12, and a ring 3 formed of an elastic plate having a through hole 31 for passing the shaft lever 11 at the center part thereof and locking claws 32 locked into the recessed groove 13 projectedly provided at the peripheral edge thereof.
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Inventors:
NASU SATOSHI
TSUBURAYA TETSUO
KASUGA SUGIO
SATO TERUO
MIYATA HAJIME
TSUBURAYA TETSUO
KASUGA SUGIO
SATO TERUO
MIYATA HAJIME
Application Number:
JP2001383762A
Publication Date:
May 21, 2003
Filing Date:
November 13, 2001
Export Citation:
Assignee:
HIGASHI NIPPON RYOKAKU TETSUDO
YASUDA SEISAKUSHO
NIPPON KASEN KOGYO KK
YASUDA SEISAKUSHO
NIPPON KASEN KOGYO KK
International Classes:
F16B41/00; (IPC1-7): F16B41/00
Attorney, Agent or Firm:
Shunji Ouchi