A clamping device includes a first, a second clamping member, a first, a second connecting rod, and an elastic member. The first clamping member includes a first side and a second side opposite to each other. The second clamping member includes a third side and a fourth side opposite to each other. The first connecting rod is pivotally disposed between the first side and the third side. The second connecting rod is pivotally disposed between the second side and the fourth side. The elastic member is connected between the third side and the first connecting rod. The elastic member provides a restoring force to make the first connecting rod rotate relative to the second clamping member, to drive the second connecting rod and the first clamping member to rotate, so that a distance between the first and the second clamping member is shortened to clamp an object.

A clamp includes a jaw assembly, and an actuator device for moving the jaw assembly between clamped and unclamped positions. The actuator device includes a handle, and a keyed shaft coupled to the handle via a spring biased releasable torque transfer mechanism.

A device for clamping a piece of formwork includes a bar having an end for attachment to a body. The device includes a jaw mounted on the bar and for receiving the piece of formwork, the jaw being movable along the bar.

A work holding clamp system for securing a workpiece to a work surface having a work surface T-slot arranged along an ‘X’ axis, comprised of a base plate secured to the work surface and having a plurality of T-slots, each of the plurality of T-slots are aligned with one of a plurality of axis including at least the ‘X’ axis and a ‘Y’ axis that is transverse to the ‘X’ axis. The work holding clamp system includes a workholding element selected from the group consisting of wedge clamps, pivot clamps and workstops, that may be secured within a T-slot of the plurality of T-slots provided in the base plate.

A workholding clamp for securing a workpiece to a work surface comprised of a fixed body secured to the work surface and having a first inclined surface; a sliding jaw having a second inclined surface residing against and parallel to the first inclined surface, a clamp face and at least one obround opening; and at least one clamping fastener residing within the at least one obround opening and being tightened to cause the second inclined surface to slide against the first inclined surface. A workholding pivot clamp for securing a workpiece to a work surface, and a work stop for reliably locating a workpiece relative to a work surface are also described.

A massage gun mounting system, includes a massage gun mounting device, including a structure connector with right and left clamp portions; and a massage gun holder with right and left holder portions, such that the structure connector connects to a mounting structure; such that a handle of a massage gun device is insertable into the massage gun holder, such that a user is enabled to apply pressure to a massage delivery member of the mounted massage gun device.

An apparatus having a clamp configured to move between an open position and a closed position. The clamp has an actuator, a head, a base, two or more arms, and two abutments. The actuator extends through the head and the base. The two or more arms are coupled to the head and the base. The two abutments abut each other when the clamp is in the closed position.

An apparatus having a clamp configured to move between an open position and a closed position. The clamp has an actuator, a head, a base, two or more arms, and two abutments. The actuator extends through the head and the base. The two or more arms are coupled to the head and the base. The two abutments abut each other when the clamp is in the closed position.

Example implementations relating to a mechanical vise are disclosed herein. In one particular implementation, a first jaw piece includes a first slip surface a second jaw piece includes a second slip surface. The first slip surface may be moveable with respect to the second slip surface, while in slip contact with the second slip surface, to at least in part apply a force against a workpiece.

A rail support system includes a clamp side having a channel with a first side and a second side, the first side and second side to engage around a post; an extension extending away from the second side; a plate engaged with the extension; a tightening screw engaged with the plate and further engaged with the first side; tightening the tightening screw pulls the first side and the second side together; a cradle side having an arm attached to the channel and extending away therefrom; and a cradle support attached to and extending away from the arm; the cradle support is to receive a rail; the clamp side is to secure to post while the cradle side is configured to engage with the rail such that the post and the rail are held in position for welding together.