The present invention provides a clamp for holding a workpiece that is particularly suitable for use in CNC machining. The clamp is particularly useful for use in picture-frame machining techniques as it allows a workpiece to be held in a position wherein a machine can have substantially unencumbered access to both sides of the workpiece without the need to remove the workpiece from the clamp. The clamp comprises a frame comprising a base, a first arm, and a second arm, the first arm and the second arm each mounted to the base at an inner end such that they are parallel with one another.

The present invention provides a clamp for holding a workpiece that is particularly suitable for use in CNC machining. The clamp is particularly useful for use in picture-frame machining techniques as it allows a workpiece to be held in a position wherein a machine can have substantially unencumbered access to both sides of the workpiece without the need to remove the workpiece from the clamp. The clamp comprises a frame comprising a base, a first arm, and a second arm, the first arm and the second arm each mounted to the base at an inner end such that they are parallel with one another.

A clamp for reinforcing a solid surface is disclosed and may be used with a top and bottom rail. The clamp has a top and bottom jaw, each with a channel constructed to receive and align the top and bottom rails respectively in a first and second direction, respectively. Each jaw has its own channel lip, shaft hole, and alignment pin hole. An alignment may be disposed of in the pin holes to inhibit to rotation of the jaws relative to each other. A shaft may be disposed of in the shaft holes, and the shaft may be at least partially threaded with a knob connected to the shaft. The clamp may have three configurations: (1) a locked configuration; (2) a sliding configuration and (3) a rail removal configuration. Multiple clamps may be used to construct a multidimensional frame to reinforce and support the solid surface.

The present invention relates to a display manufacturing field. Disclosed is a substrate clamping device. The substrate is arranged on the trolley. The clamping arms arranged on the trolley are used for fixing the substrate. The clamping arms move up and down as rotating by means of the rotary lifting mechanism, thereby clamping and releasing the substrate. The impact on the substrate is small in the entire clamping process, and the handling of the substrate is facilitated. The clamping arms arranged around the substrate and symmetrically arranged in pair can keep the force of the substrate uniformly and can clamp the substrate more reliably.

A clamping device is used for joining panels or boards with highly cosmetic appearance at the visible joined surface. The clamping device can include mechanisms to support and move one panel relative to another panel in two directions perpendicular to the beveled edges of the panels. The clamping device can include a rotational mechanism to rotate one panel around a direction parallel to the beveled edge.

Embodiments disclosed herein generally relate to a pivotable clamp or vise. For example, the vise may clamp or secure a workpiece at a suitable position and/or orientation.

Embodiments disclosed herein generally relate to a pivotable clamp or vise. For example, the vise may clamp or secure a workpiece at a suitable position and/or orientation.

A sealed manhole clamp securing a manhole cover to a weld ring, including a lever assembly, the lever assembly having a lever arm and a cam, a pivot bolt, the pivot bolt having a cylindrical upper portion, and a lower portion, the lower bolt portion threadedly engages upwardly within the cylindrical upper portion of the pivot bolt, the cylindrical upper portion being pivotally pinned to the lever arm, the lower bolt portion being pivotally mounted to a seal ring, wherein since the lower bolt portion threadedly engages within the cylindrical upper portion, the entrance of any debris, dust, or moisture is prevented from entering the region of this threaded engagement of the pivot bolt components.

A sealed manhole clamp securing a manhole cover to a weld ring, including a lever assembly, the lever assembly having a lever arm and a cam, a pivot bolt, the pivot bolt having a cylindrical upper portion, and a lower portion, the lower bolt portion threadedly engages upwardly within the cylindrical upper portion of the pivot bolt, the cylindrical upper portion being pivotally pinned to the lever arm, the lower bolt portion being pivotally mounted to a seal ring, wherein since the lower bolt portion threadedly engages within the cylindrical upper portion, the entrance of any debris, dust, or moisture is prevented from entering the region of this threaded engagement of the pivot bolt components.

An improved system and method for clamping of carpenter levels is disclosed. Within the system, it is not necessary to re-size and re-adjust the clamps over and over again as they are re-located. As such, time-consuming repetitive steps are reduced. Additionally, the system can be applied to a variety of clamping surfaces, and can be swiveled to fit at unusual angles.