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JAPANESE

This corner pillar bolt is the idea for lightening of the bolt

Many bolts are being used in a every modern society. As for the use, a bridge and a building, the railroad, the car, the household electric appliances are in every place. Then, depending on the purpose of the use, the lightening of a bolt However, in the way of shaving and excavating the head of the conventional bolt, there is a limit in the lightening.

So, I thought about the method which it cut down the shaft part of the bolt. The way reduces a cylindrical screw part to the equilateral triangle. Then, it cuts a screw in the mountain ridge part of the equilateral triangle. If making this form, the weight of the bolt can make it 40 percent light.


There is a limit in the lightening by the excavating processing of a bolt head. The light material such as light metals and plastic can be used, too. However, there are strength and a problem in the aspect of the cost in the way.
This bolt is using the hexagram structure of the conventional bolt. It is the prismatic bolt in addition to change the shape of the axis part. It makes combination with conventional Nat possible in processing a screw in the prismatic mountain ridge part.
The effect brings about the substantial cut and the lightening of material. Then, there is an effect in the reducing of the friction, too. Also, the equilateral triangle and the asteroid shape are beautiful as molding, too.
Lightening bolt
■A use example by the prototype.■
Lightening bolt
■the iron plate is 18mm.th■

<Patent application 2000-172773>
Lightening bolt
■ triangle bolt and hexagram bolt ■ prototype ■

TRIANGLE BOLT

▲Equilateral triangle bolt▲

Lightening bolt
■ triangle bolt and hexagram bolt ■ prototype ■

HEXA BOLT
▲hexagram bolt▲

■The front figure of the equilateral triangle bolt and side view■

 

 

 

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