Abstract: Air ionizing apparatus that produces both positive and negative ions has a housing with air inlet and outlet passages, a plurality of spaced apart air ionizing electrodes and a high voltage supply which applies positive and negative voltages to separate electrodes. A fan creates an airflow that carries the ions out of the housing, the fan preferably being between the electrodes and the outlet passages to promote intermixing of positive and negative ions. The high voltage region of the high voltage supply is isolated from any direct current path to ground. The electrodes then inherently acquire a D.C. voltage bias, when necessary, that maintains an equal output of positive and negative ions without requiring use of an air ion sensor and feedback circuit for the purpose.

Abstract: A method for consolidating or densifying material selected from metal, ceramic or mixtures thereof to form a densified compact article, which process includes (a) arranging the sample to be consolidated or densified in a general configuration within a temperature controlled high pressure chamber completely surrounded by a pre-glass material which forms a glass at elevated temperature in close proximity and surrounded by a heating element within the pre-glass material and having at least one temperature measuring device in close proximity to the sample all located within a shell; (b) externally heating the arrangement produced in step (a) at an elevated temperature for a time effective to remove moisture, volatiles, impurities, volatile oxides or mixtures thereof; (c) heating the sample produced in step (c) to produce fusion of the pre-glass at between about 500.degree. to 1600.degree. C.

Abstract: The present invention relates to the use of a 2,3-dihydroxyterephthalamide of the structure (I): ) ##STR1## wherein A is selected from hydrogen or an organic linking group Y attached to a solid substrate Q,R.sub.1 is independently selected from alkyl having from 1 to 20 carbon atoms, or aryl having from 6 to 14 carbon atoms, andR.sub.2 is selected from R.sub.1 or an organic linking group Z bonded to a solid substrate, with the proviso that structure (I) has only one linking group selected from Y or Z to a solid substrate Q, as selective chelating or sequestering to remove at least one metal ion from aqueous solution. These dihydroxy compounds are useful to remove metal ions (e.g., Fe.sup.+3, from industrial waste water, human or mammalian blood or plasma, and the like.

Abstract: Compounds are described of the general formula: ##STR1## wherein: R.sub.1 is acyl of the formula --C(.dbd.O)--R.sub.5 ; R.sub.2, R.sub.3, and R.sub.4 are each selected from the group consisting of hydrogen and acyl of the formula:--C(.dbd.O)--R.sub.5wherein R.sub.5 is selected from the group consisting of alkyls, substituted alkyls, alkenyls, substituted alkenyls, cycloalkyls, substituted cycloalkyls, arylalkylenes, substituted arylalkylenes, alkylenecycloalkyls, alkylene substituted cycloalkyls, alkynyls substituted alkynyls, aryls and substituted aryls, wherein R.sub.2, R.sub.3 and R.sub.4 are selected such that at least one of R.sub.2, R.sub.3 and R.sub.4 is an acyl.When R.sub.2, R.sub.3 and R.sub.4 include one or more acyls that are not identical to the acyl of R.sub.1, these compounds of formula I are novel compounds. The invention also includes processes to produce the compounds of formula I.Compounds of formula I complex and/or chelate tissue tri-valent ions, especially iron (Fe.sup.

Abstract: A system for heap leach mining comprises supply and header pipes for conducting leaching solution alongside a bed or "heap" of crushed metal-laden ore deposited on an impervious pad. A series of spaced tubes are connected to the supply header pipes to extend transversely thereof, over the pad, to receive the leaching solution therefrom. A plurality of emitters are connected in spaced relationship along each of the tubes for emitting the leaching solution at a controlled and substantially uniform rate over the pad and into the ore bed. The tubes and emitters can be positioned either on an upper surface of the ore bed or buried beneath such surface, at a predetermined depth. The system and method of this invention provide numerous advantages over conventional surface spraying systems and methods, including substantial cost savings thereover.

Abstract: A modular furniture assembly comprises a plurality of structural members, such as a seat, backrest and legs of a chair, adapted to be releasably secured together. In the herein described chair embodiment, the upper end of each leg is secured to an underside of the seat by a clamping arrangement. Each clamping arrangement comprises a pair of clamping members defined by a slot formed in the seat and a fastener disposed transversely relative to the slot for drawing the clamping members together to releasably secure the leg to the seat. A similar arrangement is described for releasably attaching structural members of a bookcase or the like together.

Abstract: Compounds are described of the general formula: ##STR1## wherein: R.sub.1 is acyl of the formula --C(.dbd.O)--R.sub.5 ; R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7 and R.sub.8 are each selected from the group consisting of hydrogen and acyl of the formula:--C(.dbd.O)--R.sub.5wherein R.sub.5 is selected from the group consisting of alkyls, substituted alkyls, alkenyls, substituted alkenyls, cycloalkyls, substituted cycloalkyls, arylalkylenes, substituted arylalkylenes, alkylenecycloalkyls, alkylene substituted cycloalkyls, alkynyls, substituted alkynyls, aryls and substituted aryls, wherein R.sub.2, R.sub.3 and R.sub.4 are selected such that at least one of R.sub.2, R.sub.3 and R.sub.4 is an acyl.When R.sub.2, R.sub.3 and R.sub.4 include one or more acyls that are not identical to the acyl of R.sub.1, these compounds of formula I are novel compounds. The invention also includes processes to produce the compounds of formula I.

Abstract: A chaise lounge, usable for sunbathing and other recreational purposes, comprises a stationary base having a normally upright canopy pivotally mounted rearwardly thereon. The canopy, preferably comprising a hood-like frame covered with an open mesh and flexible material, is adapted to be pivoted beween a normal upright position to form a seating arrangement and a lowered position placing a back of the canopy in alignment with a top of the base. A pair of laterally spaced and operator-controlled (from within the canopy) combined holding and locking struts are pivotally interconnected between forward ends of each side of the canopy and a respective side of the base to releasably hold and lock the canopy in a selected position between its upright and lowered positions. Each strut may comprise a releasable coil spring for selectively holding a reciprocal rod in a locked position, under torsional friction, or a motor-driven screw drive arrangement.

Abstract: A wind guard is adapted for mounting on the upper edge of a vertically movable window of a motor vehicle, such as an automobile. The wind guard is preferably composed of a flexible plastic material and has an inverted U-shape so that it can be slipped onto the window and adjusted vertically thereon to provide the desired amount of window opening.

Abstract: Broadly, the present invention relates to a magnetically active organometallic Schiff base polymer having a molecular weight of between about 4,000 and 50,000 daltons.In an additional aspect, the present invention relates to a process for the preparation of magnetically active organometallic polymer having a molecular weight of between about 4,000 and 50,000 daltons, wherein the polymer comprises a multiplicity of Schiff base tridentate chelating groups having the capacity to combine with the iron (II) or iron (III) ion of an organic salt, which process comprises:(a) combining at least one organic diamine including hydrazine with at least one organic diketone or dialdehyde in an anhydrous dipolar aprotic solvent for a time sufficient to produce the polymer at a temperature of between about 50.degree. and 200.degree. C.

Abstract: An end-blown flute comprising a hollow tube open at both ends with an embouchure at the upper end of the tube to provide an end-blown free air-reed. The tube has at least 13 tone holes through the side wall thereof, the holes being particularly spaced from the bottom of the tube so that keys can be mounted in the tube in the same pattern as on a standard transverse flute and so that the end blown flute can be played with the same fingering system used with a standard transverse flute. The embouchure has a U-shaped opening which opening which opens into the upper end of the flute and also exposes the upper forward edge of the flute tube, making it easier for the player to get into the third register.

Abstract: A locking system for use with a wheeled vehicle such as a bicycle is described. The system is useful either to lockingly secure a wheel to the fork members of a bicycle or to lockingly secure the seat post to the center frame member. The locking member is cylindrical in shape and covers a specially configured nut that replaces the usual lever operated nut used with a spindled axle system.

Abstract: A plurality of uni-directional light reflective lane markers are adapted for securance on a roadway to separate and delineate laterally adjacent traffic lanes from each other. Each lane marker comprises an elongated delineating strip extending longitudinally in a first direction and a plurality of longitudinally spaced light reflectors on the delineating strip for visually displaying the strip when it is viewed in the first direction and for at least substantially rendering the strip invisible when it is viewed in the second direction, opposite to the first direction. Thus, a particular traffic lane is clearly delineated for traffic travelling in the first direction, but is rendered substantially invisible when viewed by traffic travelling in the second, opposite directions. Conversely, the lanes for traffic travelling in the second direction are clearly delineated for oppositely moving traffic.