Patent ID: 7270035

Claim:
A single wedge wrench, comprising: a handle; and a head portion connected to the handle, comprising a stationary jaw, having a zigzag gripping surface; an adjustable jaw having an inner surface opposite the zigzag gripping surface; and a wedge having a gripping surface, the wedge being slidably connected to the inner surface of the adjustable jaw through a joint member fixed to the inner surface, wherein the wedge has a sliding slot to receive the joint member so that the wedge can slidably move along the adjustable jaw, wherein the sliding slot has a recess at a bottom of the wedge, and a spring is disposed in the recess to connect the joint member, and wherein a plate is provided to close one end of the sliding slot and one end of the recess, an L-shaped groove having an upper portion and a lower portion is formed at one end portion of the fixed joint member, and the plate comprises an upper section embedded into the upper portion of the L-shaped groove, and a lower section embedded into a lower portion of the L-shaped groove.