Patent ID: 7984720
Filing Date: 2011-07-26
Classification: A45D

Abstract:
1. A bobby pin comprising: a left body and a right body respectively provided with plural ribs that have plural teeth to correspond to each other, wherein for each of the left body and the right body, said teeth are arranged on free ends of the ribs and extend laterally; and an opening device installed in a root member provided in said left body and said right body respectively, said root member of said left body provided with two extending portions that are respectively bored with a through hole, said root member of said right body provided with plural extending portions, two of said extending portions of said right body respectively bored with a through hole, said opening device further comprising a torsion spring and a compression spring, one of said extending portions of said right body having a groove for fitting said torsion spring, another one of said extending portions of said right body having a groove for fitting said compression spring, a pivotal pin inserted through said torsion spring, said compression spring and said through holes of said extending portions of said left body and said right body, wherein when the bobby pin is in a closed position, the teeth on the left body and the teeth on the right body are engaged by directly contact with each other, thereby locking the ribs of the left body and the right body with each other and said torsion spring is configured in a manner such that when the teeth are disengaged, a force by said torsion spring separates the ribs of the left body from the ribs of the right body.