Abstract: A mounting mechanism for a double crystal monochromator or the like has a parallelogram based mounting mechanism in which two of the vertices of the parallelogram are fixed in position, and two vertices are free to translate back and forth in a straight line parallel to the fixed base of the parallelogram. One diffractor is mounting for pivoting at one of the fixed vertices, and the second diffractor is mounted for pivoting at an adjacent movable vertex. The surfaces of the diffractors are maintained parallel as the angle of the diffractors with respect to input and output beams to the monochromator is changed to change the wavelength being passed. The diffractor mounted at the fixed pivot may be connected to a large diameter wheel which in turn is connected by a band to a smaller diameter wheel mounted for rotation at the other fixed vertex of the parallelogram, with a pivotable arm connected to the smaller wheel to rotate therewith.

Abstract: A double-crystal X-ray monochromator includes entrance and exit crystal assemblies mounted on a support structure to provide full parallelism of the crystals while one crystal is rotated and the other rotated and translated with respect to the first, allowing selection of the wavelength of X-rays to be passed through the monochromator. The monochromator is mounted in an ultra-high vacuum chamber by supports which pass through the vacuum chamber to support the monochromator independently of the vacuum chamber. Bearings supporting the monochromator provide very low friction to linear movement and rotation to allow high precision to be obtained. To compensate for the heating of the entrance crystal due to impingement of high energy X-rays on the crystal, the entrance crystal is cooled using a radiation heat transfer system which provides no physical contact between the radiator connected to the entrance crystal assembly and the heat transfer structure on the vacuum chamber.

Abstract: A rotary electric toothbrush including a power handle having a foot and a motor having a rotatable power shaft. A brush stem is attached to the power handle and extends therefrom to terminate at a stem head. A brush cartridge is attached to the stem head and extends therefrom to terminate at a toothbrush head. The brush cartridge includes at least one generally cylindrical brush oriented approximately headward-to-footward. A drive shaft extends from the power handle to the brush. A transmission transmits the motion of the power shaft to selectively cause the drive shaft alternatively to rotate about its longitudinal axis and to move parallel thereto in a reciprocating manner. A user of the rotary electric toothbrush thus may direct power from a single motor selectively to cause the brush to rotate about its longitudinal axis and, alternatively, to move in a reciprocating manner parallel thereto.

Abstract: A hydraulic power and control system which includes a pump which is mounted n a sealed housing. The pump is mounted in the sealed housing along with a pilot operated power valve. The pump has an inlet within the housing for intaking oil therein and is connected to the pilot operated power valve for operating components in a functional system, such as a submersible docking apparatus. The pilot operated power valve discharges oil into the sealed housing and is connected to a control valve which is located exterior of the housing. The control valve will pilot operate the power valve and discharges oil within the sealed housing. The control valve may be mounted within a pressure casing which receives a reduced oil pressure from the pump within the sealed housing. The sealed housing may be pressure compensated to ambient so that the pressure casing is maintained at a specific pressure level above ambient.

Abstract: A control system for a submersible barge wherein an operator can control movements of the barge by pushing joy sticks in various directions which correspond psychologically with the desired movements. The barge has a ballast tank located in each of its lateral quadrants along with a system for independently ballasting or deballasting any one of the tanks. The mounting of the joy sticks on the barge and the configuration of the ballasting and deballasting system are such that the operator can control the barge in pitch or roll in regard to any one of the barges longitudinal or diagonal axes.