Patent ID: 8381622

Claim:
A hand tool for assembling and disassembling a plurality of workpieces, the hand tool comprising: a pair of handle members, each handle member of the pair of handle members comprising a top end portion, a bottom end portion, and a coupling portion extending sideways from the top end portion, the pair of handle members pivotally coupled to each other at respective coupling portions; a pair of intermediate members, each intermediate member of the pair of intermediate members comprising a lower end portion, an upper end portion, and an attaching portion extending between the upper end portion and the lower end portion, the lower end portion of each of the pair of intermediate members pivotally coupled to the top end portion of respective handle member of the pair of handle members, wherein the pair of intermediate members is pivotally coupled to each other at respective attaching portions; a pair of jaw members, each of the pair of jaw members pivotally coupled to the upper end portion of respective intermediate member of the pair of intermediate members, wherein each of the pair of jaw members further comprise a gripping portion, the gripping portion configured to form a C-shaped structure, the gripping portion of the pair of jaw members capable of grasping at least a portion of a workpiece of the plurality of workpieces therebetween, when the C-shaped structure of the gripping portion of each of the pair of jaw members are disposed toward one another; a pair of retainer springs and a pair of roller bearings disposed on the pair of retainer springs, each of the pair of roller bearings being mounted between a jaw member of the pair of jaw members and the respective upper end portion of each of the pair of intermediate members, wherein the pair of retainer springs and the pair of roller bearings are adapted to retain the pair of jaw members at one or more predetermined angles with respect to the pair of intermediate members; a spring member mounted between the pair of handle members, the spring member capable of being compressed and retracted based on a pivotal movement of the pair of handle members; and a locking mechanism configured on the pair of handle members, the locking mechanism adapted to enable the pair of handle members to attain one of a locked state and an unlocked state, wherein upon applying a grasping force to the pair of handle members, the spring member is compressed and the pair of intermediate members converge towards each other thereby allowing the gripping portion of the pair of jaw members to grasp the at least a portion of the workpiece therebetween for assembling and disassembling the plurality of workpieces, and wherein upon grasping the at least a portion of the workpiece, the pair of handle members are held in the locked state by the locking mechanism.