Abstract: A hand tool for assembling and disassembling a plurality of workpieces is provided. The hand tool comprises a pair of handle members, a pair of intermediate members pivotally coupled to the pair of handle members, a pair of jaw members pivotally coupled to the pair of intermediate members, a spring member mounted between the pair of handle members, and a locking mechanism configured on the pair of handle members. Accordingly, 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 pair of jaw members to grasp the at least a portion of the workpiece therebetween for assembling and disassembling the plurality of workpieces. Further, upon grasping the at least a portion of the workpiece, the pair of handle members are held in a locked state by the locking mechanism.

Abstract: A weightlifting support apparatus comprises a frame assembly, a bench disposed thereon, a movable rack movably attached to said frame assembly, an actuation mechanism operatively coupled to said movable rack, and a control unit for selectively operating the actuation mechanism, The movable rack may support a barbell or heavy object thereon, and the actuation mechanism may impart a force on the movable rack to cause the rack to move in an upward or downward direction, thus assisting a user in lifting a barbell or heavy object when the user is incapable of lifting or moving the barbell or heavy object on his or her own. The apparatus reduces or eliminates the need for another person to standby while the user is lifting weights and improves the safety of the practice of lifting weights.

Abstract: A hand tool for assembling and disassembling a plurality of workpieces is provided. The hand tool comprises a pair of handle members, a pair of intermediate members pivotally coupled to the pair of handle members, a pair of jaw members pivotally coupled to the pair of intermediate members, a spring member mounted between the pair of handle members, and a locking mechanism configured on the pair of handle members. Accordingly, 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 pair of jaw members to grasp the at least a portion of the workpiece therebetween for assembling and disassembling the plurality of workpieces. Further, upon grasping the at least a portion of the workpiece, the pair of handle members are held in a locked state by the locking mechanism.