Abstract: A process and apparatus for sweeping a flat optical light plane perpendicular to a primary input laser beam for use in precise alignment applications includes rotatably mounting a penta prism onto a spindle such that the laser beam intersects the entrance face of the penta prism. In addition, the path of the laser beam intersects the actual axis of rotation of the spindle at a designated point which is positioned as a function of the geometry of the penta prism, and the first relfecting surface of the penta prism is located intermediate the laser device and said designated point. In operation, rotation of the penta prism about the spindle results in the development of a flat, true optical light plane.

Abstract: Thermoplastic compositions of polyphenylene ether resin and diblock or radial teleblock copolymer of an alkenyl aromatic compound and a conjugated diene (which can be hydrogenated) containing polyolefin resin in large amount are described. The compositions are moldable into articles which do not exhibit the brittleness and tendency toward delamination often associated with use of large amounts of polyolefin.

Abstract: A plastic mount for a stamping die and a method for manufacturing the same is disclosed. The mount has an elongated tubular base of rectangular cross section and includes a handle projecting from the upper surface of the base. A pair of longitudinally extending ribs project downwardly from the lower surface of the base for aligning a stamping die. The upper surface of the base includes a pair of rib portions which are spaced apart such that a separation is defined therebetween. The separation is aligned with the handle and is at least as large as the longitudinal width of the handle at its juncture with the base. The rib portions cooperate with a rib on the bottom surface for receiving and retaining a C-shaped transparent strip. The stamp is formed from two segments by an injection molding technique which does not require cam action mechanisms.

Abstract: A fluid is filled in a space between a cover and an outer casing, to which a plurality of vanes are attached, and there is disposed in the aforementioned space a partition which is formed with two fluid inlet ports. An inner casing is sandwiched between the partition and the outer casing thereby to form a reservoir between the cover and the partition, an inner torque transmitting chamber between the partition and the inner casing, and an outer torque transmitting chamber between the inner casing and the outer casing. One of the fluid inlet ports of the partition is made to have communication with the inner torque transmitting chamber, whereas the other fluid inlet port is made to have communication with the outer torque transmitting chamber. The two fluid inlet ports are opened and closed by means of two valves, respectively, which are preset at different temperatures.The temperature-sensitive fluid coupler thus constructed can suppress noise while still reducing the power consumption.

Abstract: A thermoplastic composition having an improved impact modifier is described. In an admixture of polyphenylene ether and butadiene-modified alkenyl aromatic resin, a resin which is a network polymer combining poly-alkenyl aromatic and polybutadiene membrane is employed. On subjection to high shear, the continuous membrane phase is shredded into discrete segments which impart an increased impact strength to the composition.