Patent ID: 8292279

Claim:
A clamp comprising: a base with a holding surface; a first movable element slidably mounted on the holding surface of the base, the first movable element sliding along a first direction; a second movable element slidably mounted on the holding surface of the base, and formed opposite to the first movable element, the second movable element sliding along the first direction; a third movable element slidably mounted on the base, the third movable element sliding along a second direction perpendicular to the first direction, the third movable element comprising: a first arm defining a first slope; a second arm formed opposite to the first arm, the second arm defining a second slope facing the first slope; wherein, the first movable element and the second movable element are located between the first arm and the second arm, the first movable element resists against the first slope, and the second movable element resists against the second slope, when the third movable element moves, the first slope and the second slope correspondingly urge the first movable element and the second movable element to move toward or away from each other.