Abstract: A compact device for clamping a disc-shaped tool on a tool spindle of a portable machine tool with a clamping anchor arranged in the tool spindle, with a clamping flange attachable to the free end of the clamping anchor, with an abutment arranged at the tool end of the tool spindle and with a manual actuating mechanism for releasably pressing the clamping flange against the abutment, thereby clamping the tool between the clamping anchor and the tool spindle. The manual actuating mechanism includes a first pressure cylinder having a first cavity and a second pressure cylinder having a second cavity, and a connecting channel between the cavities. The second pressure cylinder includes a piston delimiting the second cavity. The piston is adjustable and fixable by the manual actuating mechanism from the tool end of the tool spindle for releasably clamping the tool on the tool spindle.

Abstract: The centering support assembly features a half moon shaped support base with two upright stanchions at opposite sides of the base, providing proper spacing between the base support and a crosshead clamping piece. The entire assembly is bolted together by bolts received through the crosshead and each stanchion, which is threadedly received in the base. One or more inner or primary pipes may be supported between the stanchions, which permit proper deflection of the pipes relative to each other and lateral deflection, if necessary, and similarly, relative to the outer containment pipe. The cross-piece and half moon base portion of the centering support assembly fit within the inner diameter of the outer containment pipe, with the crosshead piece spaced from the inner diameter to permit deflection of the outer pipe relative to the primary pipe or pipes under load.

Abstract: An improved aqueous acidic trivalent chromium electrolyte and process for increasing the tolerance thereof to the presence of deleterious contaminating metal ions and organic impurities which normally progressively increase during commercial operation of the electrolyte ultimately resulting in chromium electrodeposits which are commercially unsatisfactory due to the presence of streaks, clouds, and hazes in the deposit. The improved composition contains an effective amount of at least one EDTA compound which is effective to mask the adverse effects of such contaminating metal and organic impurities and which also enhances the codeposition of such metal contaminants on the parts being plated thereby reducing, and in some instances, preventing the accumulation of such contaminating metal ions in the electrolyte.

Abstract: Provided are compositions comprising a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 80 mol % and a saponification degree of vinyl acetate component of at least 95 mol %, said composition containing 20 to 200 ppm as converted to alkali metal of an alkali metal acetate, 30 to 250 ppm of acetic acid, and 5 to 500 ppm as converted to phosphate ion of phosphoric acid or an alkali metal hydrogenphosphate, and having a content ratio of acetic acid/alkali metal acetate of 0.1 to 1 and the flow characteristic that the extrusion rate does not substantially increase for at least 10 hours in the relationship between the heating time and the extrusion rate with a capillary rheometer (Koka Flow Tester) at at least one temperature 10.degree. to 80.degree. C. above the melting point.

Abstract: An optical parametric oscillator/laser system includes an optical pump source for generating pump radiation and an embedded dual optical resonator containing an optical parametric oscillator/laser crystal. The embedded dual optical resonator includes a laser resonator and an optical parametric oscillator resonator. The OPOL crystal is an optical parametric oscillator material doped with ions that exhibit lasing transitions. The pump radiation stimulates generation of laser radiation. When the laser radiation reaches the parametric threshold, optical parametric radiation is generated. In one embodiment, the laser resonator and the OPOL resonator are each defined by spaced-apart mirrors. In another embodiment, the OPOL system includes an OPOL rod having end caps at each end. Each end cap includes surfaces for internally reflecting the laser radiation and the parametric optical radiation in a closed loop path so that the OPOL rod and the end caps define an optical resonator.

Abstract: A method and appartatus for determining the parameters (i.e., proportion, mean, and standard deviation) of constituent subpopulations within a sample population of particles which contains overlapping populations. The invention includes the use of the EM algorithm, an iterative process which estimates the probability that a particle belongs to any given overlapping subpopulation.

Abstract: A rolling door assembly including a flexible curtain having an inner end, an outer end and side edges. The inner end of this curtain is mounted to a rotatable curtain roll. The assembly includes a sprocket mounted on the curtain roll and a continuous chain loop that extends around this sprocket and is connected to a motor drive to form a curtain winding and unwinding mechanism. Two drive loop members are in operable engagement with the curtain roll for purposes of loop travel during rotation of the roll. The bottom end of the curtain is secured to the two drive members so that the bottom end and the drive loop members travel together. There are also two adjusting mechanisms connected between the bottom end of the curtain and the two loop members to accommodate a difference in speed of travel between the loop members and the bottom end of the curtain, the latter moving at a variable speed as the curtain is wound or unwound.

Abstract: A refuse container has a lid and a pair of handles, and each handle is mounted to pivot between a closed position for holding the lid on the container and an open position for removing the lid from the container. Each handle has two legs spaced apart from each other, and a locking bar is coupled between the two legs and permitted to slide along the legs between a locked position for locking the handle in the closed position to prevent access into the container, and an unlocked position for opening the handle to remove the lid. The locking bar is received within a U-shaped clamp in the locked position to retain the locking bar in the locked position. In another embodiment, the locking bar is received within a recess for retaining the locking bar in the locked position. A U-shaped handle is coupled to the locking bar to move the locking bar between the locked and unlocked positions.

Abstract: An optical parametric oscillator includes a pump laser for producing a pump beam, an optical resonator, an OPO crystal disposed within the optical resonator aligned with and responsive to the pump beam to produce a parametrically generated output, and a device external to the optical resonator for line narrowing the parametrically generated output. In one embodiment of the invention, the device is a grating and in another embodiment of the invention the device is an acousto-optic cell.

Abstract: A DIAL LIDAR system, and methods of operating same are disclosed. A plurality, such as six, distinct coherent beams are combined into a single transmitted beam. Atmospheric targets such as light hydrocarbons cause a portion of the transmitted beam to be reflected as a return. In one transmitting configuration, six pulsed beams are fully time-multiplexed, and are combined through selective polarization. In another transmitting configuration, six pulsed beams are fully time-multiplexed, and are combined through selective orientation of beam paths, in connection with a rotating beam displacer. In yet another transmitting configuration, six beams are wavelength-multiplexed, and are combined through differential refraction. In one receiving configuration, time-multiplexed beams are received using a single detector. In another receiving configuration, wavelength-multiplexed beams are received using multiple detectors.

Abstract: A leather-like sheet material resembling natural leather is provided which has a microporous surface and comprises a fibrous substrate layer (1) and a porous, skinless surface layer (2) having an apparent density of 0.25-0.48 g/cm.sup.3 with pores having an average diameter of 15-300 .mu.m being predominantly present therein. The surface layer (2) comprises polyurethane I in which the organic diisocyanate constituent is an aromatic ring-containing organic diisocyanate and the porous structure of at least the surface portion of the surface layer (2) is provided with polyurethane II prepared from an organic diisocyanate, which mainly comprises an aliphatic diisocyanate and/or an alicyclic diisocyanate, a polymer diol and a chain extender.

Abstract: An underground double containment system consists of a concrete outer containment receptacle housing a primary fluid flow pipe which extends therethrough and is supported on inverted T-beam structures within the concrete receptacle. The concrete receptacle can be provided with a removable cover providing access to the primary piping in modular sections defined by the boundary of the receptacle and flexible curved tubes opening in the wall of the receptacle through which the primary piping module sections can be removed from the receptacle or held for repair/maintenance.

Abstract: Provided is a process for producing pellets which comprises introducing strands between two upper and lower feed rolls using a belt conveyor slanted down forward with a press roll mounted thereon, then introducing the strands to a support having a fixed blade on the head thereof and cutting the strands with a rotary blade while spraying a liquid onto the strands from above the support.This process can give pellets having no obliquely cut surface and having a uniform cut length.

Abstract: An improved scroll chuck for holding a workpiece in a lathe including a jaw holder having a front side and a rear side, radially extending slots in the front side and means for attaching the holder to the lathe for turning about a central axis. Two or more jaw devices are mounted in the slots and are radially movable therein. A scroll member is rotatably mounted on the holder and has a spiral-shaped rib formed on a front surface thereof. This rib extends along recesses formed on the jaw devices whereby rotation of the scroll member causes the jaw devices to move in the radial direction. A pin member is arranged on one of the jaw devices and extends from a rearwardly facing surface of the device and into an elongate recess formed in the holder. This pin member prevents the jaw device from accidentally disengaging from the holder.

Abstract: A double containment pipe joint assembly is provided with an inner pipe and an outer or containment pipe secured in concentric relation. The pipe joint assembly includes a fitting having end surfaces on concentric flanges which can be secured to a length of a primary and containment pipe at intervals along the pipeline wherein sections of the pipeline can be removed and repaired without the necessity of removing the whole pipeline. The concentric flanges are joined by a thickened divider ring which provides smooth fillets at its juncture with the flanges to reduce thermal stresses on the fitting.

Abstract: A centering support for a double containment pipe assembly consists of a three-piece assembly including an outer ring and a pair of mirror-image inner rings having tabs which are inserted into holes in the outer ring from opposite sides. The diameter of the outer ring is slightly smaller than the inner diameter of the outer pipe or conduit of the double containment pipe assembly and is inserted into an outer pipe at spaced locations therealong. The inside diameter of the inner rings are slightly wider than the outside diameter of the primary or inner pipe and they may receive therethrough the inner pipe. The inner rings and outer ring can be formed from dissimilar materials which are weldable to the outer pipe and inner pipe, respectively, at selected support points.

Abstract: An access housing is provided between segments of an outer containment pipe of a double containment pipe assembly through which the flanged ends of a primary pipe may be accessed with the ability to readily assemble and disassemble the inner piping system in modular sections.

Abstract: A process for the rapid bonding of lumber by surface heating is provided, which involves surface heating of a first piece of lumber to be bonded and applying an adhesive to the non-heated surface of another piece of lumber and then contacting the thus-prepared pieces of lumber and applying pressure with a cold press.