Patent ID: 8919227

Claim:
Pliers for C-shaped lock rings comprising: a holding unit and a clamping unit, wherein: the holding unit is composed of two handles and a control portion, the handle is provided with a long slot at a side and a pivoting aperture inside the long slot for providing a pivoting point for the control portion, when an external force is applied onto the control portion, the control portion is capable of rotating in the long slot; the clamping unit comprises two identical clamping members and a positioning disk, the clamping member has a first limiting member and a first securing aperture, a ring-holding member is pivoted above the clamping member and has a containment space; the containment space is used for accepting the positioning disk; the positioning disk has a second limiting member, a second securing aperture and a positioning slot on two outer sides of the two clamping members; the positioning disk is locked onto the clamping member; the handle utilizes the center shaft to be pivoted onto the first securing aperture and the second securing aperture such that the handle and the clamping member are pivoted with each other; and accordingly, when the control portion is released to engage with the positioning slot to lock the handle; when the control portion is pushed to disengage with the positioning slot, the handle rotate around the center shaft corresponding to the rotations of the clamping unit, such that the clamping members can be open or closed.