Title:
FALLING-OFF PREVENTION TOOL
Document Type and Number:
WIPO Patent Application WO/2011/145212
Kind Code:
A1
Abstract:
Disclosed is a falling-off prevention tool provided with a first coil spring section, a second coil spring section, and a third coil spring section. The first coil spring section is formed from a coil wire which is wound in a predetermined direction. The second coil spring section is formed from a coil wire and has a diameter which is smaller than the inscribed circle of the first coil spring section; the coil wire of the second coil spring section has one end connected to one end of the coil wire forming the first coil spring section, and is wound in the same direction as the predetermined direction. The third coil spring section is formed from a coil wire and has an inscribed circle that is larger than the diameter of the second coil spring section; the coil wire of the third coil spring section has one end connected to the other end of the coil wire of the second coil spring section at the side opposite to the abovementioned one end that is connected to the one end of the coil wire of the first coil spring section, and the coil wire of the third coil spring section is wound in the same direction as the predetermined direction. The shape of the first coil spring section is approximately the same as that of the third coil spring section.
Inventors:
SOEDA TAIJIRO (JP)
SOEDA MAYUMI (JP)
SOEDA MAYUMI (JP)
Application Number:
PCT/JP2010/058635
Publication Date:
November 24, 2011
Filing Date:
May 21, 2010
Export Citation:
Assignee:
SOEDA TAIJIRO (JP)
SOEDA MAYUMI (JP)
SOEDA MAYUMI (JP)
International Classes:
F16B39/20; F16B41/00
Foreign References:
| JP2005083543A | 2005-03-31 | |||
| JPS6298015A | 1987-05-07 | |||
| JP2003006940Y1 | ||||
| JPS5138155U | 1976-03-22 |
Attorney, Agent or Firm:
ARIYOSHI Shuichiro (JP)
Shuichiro Ariyoshi (JP)
Shuichiro Ariyoshi (JP)
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Claims:
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