Single-action spring hinges put continuous pressure on the swing door, meaning it always returns back to its closing position, pressed against a stop. With double-action spring hinges, the door can be ...

おそらく、普段しげしげと見たことはない部品、それがドアヒンジだ。しかし、ドアの開閉、精度を左右する重要部品である。次に自分のクルマのドアを開けたとき、ぜひドアヒンジに注目していただきたい。国産・インポート全35モデルのドアヒンジを ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...