Abstract: A portable solvent recovery distillation apparatus for improved on-site recovery of highly flammable solvent from a batch of spent solvent. Both evaporation of the spent solvent and condensation of the purified solvent vapors are conducted within a common tank under reduced pressure conditions maintained by an air-operated vacuum pump. Heating of the spent solvent is accomplished by a hot fluid circulating in indirect heat exchange relationship with the spent solvent. The apparatus is totally non-electrical for increased safety of operation.

Abstract: A renal tissue puncture site dilator with grooves in the jaws to receive a wire guide. The renal tissue dilator is a scissor-like surgical instrument, similar to a clamp, with jaws that have a triangular cross section to aid in tearing of tissue. The grooves in the jaws form a channel beginning at the tips of the jaws and exiting the jaws through the side of the jaws. This channel has a circular cross section, designed to slidably receive a wire guide. A needle is inserted into the renal tissue and a wire guide is threaded into the needle. The needle is removed. The instrument is threaded onto the wire guide and moved into the puncture site. The puncture site is dilated by opening the jaws of the clamp thereby tearing the renal tissue. The dilated tissue may be further dilated by rotating the clamp approximately 90.degree. and again opening the jaws of the clamp to tear the renal tissue further.

Abstract: A tool for removing a cap from a pipe. A torque screw is threadedly mounted to a frame having a pair of downwardly extending legs to which is attached a ring slippable over and against a sewer pipe. A pair of fingers are pivotally and rotatably mounted to an end of the screw and are positionable between the end cap and the end of the sewer pipe. Rotation of the screw forces the fingers and cap apart and away from the ring and pipe.

Abstract: A submergible, post-type dental implant system for anchoring an artificial crown or bridge in a row of teeth or edentulous or partially edentulous area includes a root structure which is surgically implanted transgingivally and into the bone therebeneath, an implant head which is compatibly sized and shaped to fit over an upper tapered portion of the root structure. Prior to the assembly of these two titanium alloy components, a healing cap is disposed over the tapered portion of the root structure during the time interval for healing which may be as much as three to six months. After the healing periods has ended, a tool is used to remove the healing cap and thereafter the implant head is aligned and slid over the top tapered portion of the root structure.

Abstract: An air inflatable recliner including: a back and head support extending upwardly at angles between 30 and 45 degrees, comprised of individually shaped, air inflatable, cushions interconnected together; which back and head support is interconnected together with a leg and foot support, comprised of individually shaped, air inflatable, cushions positioned and interconnected together for elevation of the popliteal fossa through 120 to 150 degrees; and, an air inflatable support for dissipating body heat, which has a plurality of holes extending therethrough.

Abstract: An arrangement of dwelling units for multiple-family housing includes a plurality of elongate units which are arranged relative to one another in a quadrangle configuration such that a major portion of one side of each unit cooperates with the major portion of a side of the other three units to generally enclose an open-air court. Each elongate unit is of a double width comprising an outer single-wide section which is assembled to an inner single-wide section at the building site. This enables each of the single-wide sections to be preconstructed at a plant and then transported over the highway to the actual construction location. Additionally, each of the elongate units is arranged with a living section and adjacent thereto a storage section which may be a garage area.

Abstract: An apparatus and method for recharging a rechargeable battery in a hand-held transceiver while maintaining communications capability through the transceiver. The battery charger is housed in a charging unit to which the transceiver can be removably attached. A dual-mode charging circuit generates a first voltage during transmit mode and a second, higher voltage during receive mode, and includes a DC-DC converter for generating the second voltage. The charger includes a push-to-talk (PTT) switch and mode control circuitry for simultaneously controlling the operating modes of the charger and transceiver, and additionally includes a separate microphone, speaker, and audio and RF amplifiers for providing greater RF power and audio power while the transceiver battery is being recharged.

Abstract: A child restraining seat having a harness with an adjuster for controlling harness sizing. In the preferred embodiment, the harness includes a pair of belts fixedly secured to a pad having a downwardly extending tongue lockingly received by a belt buckle secured to the seat between the legs of the child. The opposite ends of the belts extend slidably through the seat back being attached to a moveable bar. A third belt attached to the moveable bar extends forwardly through a slot in the forward portion of the seat and is adjustably received by an adjuster mounted to the front of the seat. The adjuster includes a spring biased cam member for lockingly holding the third belt in place. Alternate embodiments include such a harness assembly having the buckle fixedly secured thereto with a tongue secured to the seat.

Abstract: A stone cutting device including a continuous flexible cutting belt for cutting a slot in stone which is in the round. The device includes a main frame, a jib pivotally mounted to the main frame, aligned sheaves rotatably mounted to the main frame and jib, a continuous flexible cutting belt extending around and in driven engagement by the sheaves, and a means to rotate at least one of the sheaves. The continuous flexible cutting belt includes a plurality of spaced apart abrasive cutting elements extending across the top and sides of the belt. The cutting elements are flush with the remainder of the top and side surfaces of the belt which includes a molded-in-place resilient material. Belt strength is provided by a flexible cable extending through the length of the belt.

Abstract: An impregnated fabric material comprising a fabric substrate to which has been bonded an active cationic impregnant characterized in that there has also been applied to the substrate an anionic indicator dye in combination with a further cationic component, and in that the dye bonds to the further cationic component more readily than to the substrate and that the further cationic component competes with the impregnant for bonding to the dye. In the case of a wiping cloth, when the dye, which can act as an indicator, has been removed to indicate exhaustion of the active component, enough active component in fact remains on the cloth to provide a safety margin.

Abstract: An injection mold assembly for formation of thin walled multi-partitioned plastic containers. An Array of cantileveredly mounted and spaced apart cores are extendable into a female mold assembly which includes a pair of side cavity cams and end cavity cams closeable upon the array, but spaced therefrom to form the plastic container therebetween. A plurality of side locking wedge shaped fingers are extendable into the slots spacing the cores apart. The fingers are arranged to extend into the opposite sides of the array of cores in a direction perpendicular to the longitudinal axis of the array spacing the cores apart while plastic is injected into the assembly by injectors mounted to the female mold. A pair of end pushers contact the two outermost cores in the array limiting outward movement of the cores during the injection step. The end pushers likewise extend in a direction perpendicular to the longitudinal axis of the array.

Abstract: A feedforward trunk amplifier having the distortion advantages associated with the feedforward topology while providing significantly reduced power consumption and cost. The trunk amplifier has a discrete preamplifier including active gain and slope control, and a low-power feedforward output stage including a medium-gain, hybrid main amplifier, a high-gain, discrete error amplifier having two gain stages which share the same bias current, and miniature coaxial cable delay lines mounted on the cover of the amplifier housing.

Abstract: An intraocular lens includes a lens body having a convex front surface and a planar back surface, an integral peripheral ring having an internal bevel extending rearwardly from the back surface, and four holes spaced about and adjacent the periphery of the lens body and extending from the front surface to the back surface. A pair of curved, filament members are attached to the lens body within apertures in bosses formed on the front surface of the lens body. Each filament member includes an inward u-niche and a distal closed loop. The u-niche makes for improved an easier insertion. The distal closed loop helps prevent iris entrapment and rupturing the posterior capsule.

Abstract: A construction panel which includes an interior stud frame having a bottom plate, a top plate, and one or more vertical studs extending between and connected with the bottom and top plates, an exterior stud frame having a bottom plate, a top plate, and one or more vertical studs extending between and connected with the bottom and top plates, an intermediate insulating board having an interior side defining grooves within which at least a part of the interior stud frame is received and an exterior side defining grooves within which at least a part of the exterior frame is received, the interior and exterior stud frames and insulating material being connected together and having first and second vertical ends defining either a flat surface, a groove portion or a tongue portion to facilitate interconnection of a plurality of such panels.

Abstract: A device for removing hydrogen sulfide from well water having in situ activated carbon adsorbent regeneration. The device includes a tank with a water inlet, a water outlet and a steam outlet. The hydrogen sulfide adsorbent material is situated in the tank so that water entering through the water inlet must pass through the adsorbent material before exiting the water outlet. The tank also has a heating element which may be activated to boil water which is in communication with the adsorbent material. The water inlet, the water outlet, and steam outlet each have valves which are operated so that water may enter the tank and pass through the hydrogen sulfide adsorbent material and out the water outlet during water purification stage without any water going out the steam outlet.

Abstract: A stackable plastic bottle for enabling a pyramidal display of several such bottles includes a generally cylindrical main body portion whose height and diameter will vary depending on the volume to be created internally and a neck portion which has gradually tapering sides and extends upwardly from the main body portion terminating in a generally cylindrical spout and outlet opening. Oppositely disposed in the neck portion is a pair of receiving recesses which are defined along their lower surface by a substantially horizontal shelf and inwardly therefrom by an upwardly extending peripheral wall. Each recess is sized and arranged such that it is capable of receiving part of the main body portion of a corresponding stackable bottle such that by proper spacing of the bottles row after row, they may be arranged in a pyramidal display.

Abstract: A method for the treatment of a substrate for electroless metal plating which includes the steps of applying onto at least a portion of the substrate a material selected for having adequate adherence to the substrate and for being suitably absorptive of an electroless plating cataylst. The coated surface is thereafter successively contacted with a plating catalyst, accelerator for the catalyst, and an electroless plating solution.

Abstract: An improved electrochemical dimerization of a N-substituted pyridinium salt to its corresponding N,N'-disubstituted 4,4'-tetrahydrobipyridine in a flow cell at a high-surface-area cathode, employing an ion-exchange membrane divider and an alkaline catholyte solution. Isolation and recovery of the resultant product are reported in significant yields are reported without the use of an extracting solvent or corrosion or other additive either in the catholyte solution or in any subsequent operation.