This invention relates to a rocking device of a folding knife, which makes folding work easy and reduces the play between a blade and a holding handle. A round hole(21) and anchor notches(211), (212) are formed at the root portion of the blade(2) and a support sheet portion(42) is accommodated in the...http://www.google.com/patents/US5072513?utm_source=gb-gplus-sharePatent US5072513 - Lock type swinging apparatus in a pair of swinging members and folding knife provided with said apparatus
