Patent ID: 7565069

Claim:
A locator, comprising a first clamping element; a second clamping element opposite to the first clamping element; a guide bar extending through the first clamping element and the second clamping element, thereby the first and second clamping elements sliding along the guide bar; and a transmitting element rotatably disposed between the first clamping element and the second clamping element and abutting the first and second clamping elements, comprising: a central hole; a first groove, annularly centered at the central hole and comprising a first position where the bottom of the first groove is highest and a second position adjacent to the first position, where the bottom of the first groove is lowest; and a second groove annularly centered at the central hole and comprising a third position where the bottom of the second groove is highest and a fourth position adjacent to the third position, where the bottom of the second groove is lowest; wherein when the transmitting element rotates, the first clamping element and the second clamping element move along the guide bar to approach or move away each other, thereby clamping or releasing an object.