A pneumatic clamping device includes a main body, a piston, a first linkage member and a second linkage member. The main body includes a chamber. The piston includes a pillar part. The first linkage member includes a first arm part and a second arm part. The second linkage member includes a third arm part and a fourth arm part. When the air is introduced into the chamber, the pillar part is gradually moved to push the first arm part and the third arm part, so that the second arm part is externally expanded relative to the fourth arm part. When the air is exited from the chamber, the pillar part is gradually moved to pull back the first arm part and the third arm part, so that the second arm part is internally retracted relative to the fourth arm part.

A clamp for use with a cutting machine, the clamp comprising: a clamp frame; a low profile clamp head operatively connected to the clamp frame, wherein the clamp head has a clamping surface for pressing on a work surface of a work piece to hold said work piece; and a fixing element, operatively connectable to the clamp frame, for providing a clamping force to the clamp head by fixing the clamp to a support base for the work piece. In embodiments, the clamp head may have a low profile clamp head, made of plastic to prevent damage to a cutting bit.

A device for inhibiting rotational motion of an article to be processed comprises a pressure plate assembly including a generally ring-shaped guide assembly. The guide assembly has and at least two guide pins extending from a first side in a transverse direction. The guide assembly further includes at least two resilient devices positioned over a respective one of the at least two guide pins and a container guide having an aperture for receiving an open end of a container moving in a first direction and for aligning the open end with a processing device. The container guide is positioned adjacent to the first side of the pressure plate assembly. At least two resilient devices are configured to be compressed in response to movement of the container guide in a first direction and are configured to decompress in response to movement of the container guide in a second, generally opposite direction.

A clamping device includes a cylinder, a base body, a movable plate, and holding pins. The movable plate is attached to the base body substantially parallel thereto via two pairs of link arms. The movable plate moves along the operating direction of the cylinder. The movable plate can abut against a width-direction side surface of a workpiece. The holding pins are attached to the movable plate. The holding pins abut against an upper portion of the workpiece.

Systems and methods for a dual sided clamp. More specifically, a clamp with a channel configured to receive a level on a first side of the clamp, and a triangular shaped cutout configured to receive a shaft associated with different sized valves on a second side of the clamp.

A system for preparing a harvested blood vessel for use as a graft during a coronary artery bypass procedure, which includes an elongated platform, a mounting flange extending upwardly from a top surface of the platform adjacent a proximal end thereof for supporting a syringe in a fixed position, and a pair of longitudinally spaced apart clamp holders operatively associated with the top surface of the platform, each clamp holder configured to support a respective vessel clamp, wherein the vessel clamps supported within the clamp holders are adapted to hold a harvested blood vessel immobile therebetween so it can be prepared for grafting.

A clamping system useful in miter edge fabrication. Two separate units, each including a vacuum plate may be placed on'separate slabs. The units are connected with a knuckle that can be rotated to provide connection of the slabs in a variety of angles. The units are vacuum sealed to the slabs via pressure tubes. The vacuum plates may include various sections of varied sizes to connect to different sized slabs. When the knuckle is locked, a worm gear will provide for lateral movement, relative the knuckle, to provide precision fitting of slabs.

A support for a mitre joint uses two wedging mechanisms disposed at a characteristic angle. Each wedging mechanism is arranged to locate inside a hollow rail, such as within an extruded hollow beam. The wedging mechanism can be operated from outside the joint in order to clamp the mechanism in position. The mechanism has a self centering capability to assist in accurately locating the rails relative to each other.

A tool assembly includes a housing, a shaft, a spherical member, and a head. The housing defines a shaft channel. The shaft is rotatably disposed within the shaft channel and includes an exposed portion outside of the shaft channel. The exposed portion defines an engagement channel extending through an outer surface of the exposed portion. The spherical member is disposed within the engagement channel. The head is configured to be engaged with the exposed portion of the shaft. The head includes a detent configured to selectively engage the spherical member.

A system for spacing rafters can include an outer member, an inner member, jaws, and a handle. The handle can be movably connected to the inner member and the outer member. The jaws can be secured to the inner member or the outer member. The handle can be operable to move the jaws with respect to each other to equally space the rafters with respect to each other.