Abstract: The present invention is directed to a x-y-axis device and a x-y-z-axis device for micro-manipulating or positioning a crystal for x-ray diffraction. More specifically, the devices which may be placed on the head on a goniometer have small footprints (small in size). The sample may be moved and recorded in step resolutions of 1 micron over an extended range of motion.

Abstract: The present invention is directed to an end effector, a gripper, that retrieves crystals that are mounted on cryo-pins from a storage location in liquid nitrogen. More specifically, the end effector of the present invention is a collet type of gripping mechanism.

Abstract: The present invention is directed to a x-y-axis device and a x-y-z-axis device for micro-manipulating or positioning a crystal for x-ray diffraction. More specifically, the devices which may be placed on the head on a goniometer have small footprints (small in size). The sample may be moved and recorded in step resolutions of 1 micron over an extended range of motion.

Abstract: In accordance with the present invention, a pumping unit (10) is disclosed. The pumping unit includes shell structures (20, 22) each having a diaphragm (32, 38) therein to divide the pumping chamber within the structure into first and second compartments. One-way valves permit material to travel from an inlet source to the first compartment and from the first compartment to an outlet source. Deflection of diaphrams provides the impetus to draw material to the first compartment from the inlet source and drive the material to the outlet source. The motion of the diaphrams is induced by a reciprocating piston assembly (94) within a cylinder (84). The motion acts through intermediate chambers (110, 112) filled with pumping fluid and acting on the opposite side of the diaphrams from the first compartments. This permits isolation of the piston from the material being moved to prevent contamination.