Abstract: A super cooler device including a thermo electric cooler on a digital micro mirror device.

Abstract: A regenerative refrigerating apparatus which can increase the speed of cooling and heating a subject to be cooled. The specific constitution of the regenerating type refrigerating apparatus includes a pressure control means 4 having a compressor 4a, a high pressure selector valve 4b, and a low pressure selector valve 4c, an expanding/compressing unit 1 having a room temperature end 1a and a low temperature end 1b, and a regenerating unit 2 having a room temperature end 2a and a low temperature end 2b, carries out heat transfer to a subject to be cooled, and is comprised of a flow path for working gas connecting the low temperature end 1b of the expanding/compressing unit and the low temperature end 2b of the regenerating unit with each other, and simultaneously extending to the subject to be cooled 7.

Abstract: A method for refrigerant and oil collecting operation capable of assuring the cleanliness of the inside of an existing communication pipe at a low cost and installing, at a low cost, a new air conditioner, comprising a compressor (1), a heat source side heat exchanger (3), a decompressing mechanism (4), and a user side heat exchanger (5), comprising the steps of performing a pipe heating operation in a heating operation mode and performing a refrigerant and oil collecting operation to collect refrigerant to a heat source side heat exchanger (3), namely, with the refrigerant heated to a temperature higher than that where contaminants such as refrigerator oil inside a refrigerant circuit is dissolved into the refrigerant, performing the refrigerant and oil collecting operation so as to assure the cleanliness of the inside of the existing communication pipes (7, 8).

Abstract: A cooling apparatus boiling and condensing a refrigerant is disclosed, wherein a heat-generating member mounted on the upper surface thereof can also be cooled. A plurality of intermediate plates (130A to 130E) are stacked between an upper plate (110) and a lower plate (120). A plurality of apertures (131 to 134) formed in the intermediate plates define a first space (140) for hermetically sealing the refrigerant and a second space (150) through which an external cooling fluid flows in proximity to the first space. A heat-generating member (10) is mounted on the outer surface of at least the lower plate, and heat is exchanged between the refrigerant heated and boiled by the heat-generating member and the external cooling fluid. An upper portion (150A) of the second space is formed in proximity to the inner surface of the upper plate.

Abstract: Each blow-off valve includes a valve body with a first movable wall defining a portion of the liquid fluid passage therein and a second movable wall defining a portion of the suction fluid passage therein. An actuator interconnects the movable walls for simultaneously moving the walls and opening the fluid passages in response to the electrical leakage-warning signal. In the species of FIGS. 2 and 3, the movable walls are integrally united with the valve body and include frangible sections that are fractured by an explosive squib to separate the movable walls from the body to simultaneously open the liquid and suction fluid passages. In the species of FIG. 5, the movable walls are separate valve elements disposed in a circular bore that opens the passages to the ambient surroundings. The actuator includes a spring, for biasing each of the valve elements out of its respective bore, and a holding device that weakens in response to the electrical leakage-warning signal.

Abstract: In a compressor control system for a vehicle air conditioner, a hybrid ECU of the vehicle controls a rotation speed of a compressor electric motor. In this case, an output circuit, which outputs a driving signal for driving the compressor electric motor, only needs to be newly provided in the hybrid ECU when a hybrid vehicle or an electric vehicle is manufactured based on an engine vehicle. Therefore, a high cost is not caused even when the output circuit is provided in the hybrid ECU which should be newly designed and manufactured. In addition, because the output circuit does not need to be provided in an air-conditioning ECU which is an existing component of the engine vehicle, the air-conditioning ECU in the engine vehicle can be directly applied to that in the hybrid vehicle without a substantial hardware change. Therefore, design cost can be reduced.

Abstract: When a temperature of cooling water detected by a water temperature sensor is, for instance, higher than, or equal to degrees, and is smaller than degrees, an abnormal state judging unit judges that an engine is under semiwarming-up condition, and then forcibly drives an electric motor fan so as to forcibly cool cooling water contained in a radiator. After the abnormal state judging unit has forcibly driven the electric motor fan, this abnormal state judging unit calculates a difference between the cooling water temperature detected by the water temperature sensor and a predicted cooling water temperature. When the calculated temperature difference is smaller than a predetermined abnormal state judging value, the abnormal state judging unit judges that a thermostat provided in a cooling water circulating path is brought into an abnormal valve opening state.

Abstract: The present invention relates to a device and method for operating a refrigeration cycle without icing of the evaporative surface of the device.

Abstract: An air conditioning system has a compressor that compresses a refrigerant and is capable of changing a flow rate of the refrigerant to be discharged, and an evaporator for evaporating the refrigerant to cool air. The evaporator is arranged in a casing that forms a passage to direct air into a vehicle cabin. When the refrigerant flow rate remains smaller than or equal to a predetermined flow rate substantially over a first predetermined time from when the refrigerant discharge flow rate falls to or below the predetermined flow rate, the compressor is operated so that the refrigerant discharge flow rate becomes greater than the predetermined flow rate at least over a second predetermined time that is shorter than the first predetermined time. In intermittent operation mode, the discharge flow rate is made greater than the predetermined flow rate for only a second elapsed predetermined time at every elapsed time.

Abstract: A cooling system comprising a compressor (20) and controlled by means of an electronic circuit (TE), the electronic circuit (TE) comprising a measuring circuit (ME) for measuring an electric power (Pn) supplied to the compressor (20) a microcontroller (10), a time variable (td), the measuring circuit (ME) effecting a measurement of the electric power (Pn) supplied the compressor (20), the microcontroller (10) comparing the measure. An electric power with reference-power values (Prl) and (Prd) previously stored in the microcontroller (10), the microcontroller altering the state of operation of the compressor (20) in function of the electric power (Pn) and of the time variable (td). A method of controlling a compressor (20), which comprises steps of storing a variable (Pn(te)) at a power value (Pn) measured at the moment when a period of time (te) counted from the moment of turning on the compressor (20) has been, and altering the value of the time variable (tD).

Abstract: In an air conditioner for a hybrid vehicle, an air conditioning unit performs air-conditioning operation by electrical power supplied from a battery. When a residual charging degree of the battery becomes equal to or lower than a charging-starting target value, an electrical generator is driven by a vehicle engine so that the battery is charged through the electrical generator. Further, when the battery is in a discharging mode, the control unit decreases an air-conditioning capacity of the air conditioning unit, as compared with that in a charging mode of the battery. Accordingly, a frequency for consuming the engine for charging the battery can be reduced. Therefore, a fuel consumption efficiency can be effectively improved and a total discharge amount of environmental destruction substance contained in exhaust gas of the engine can be effectively reduced.

Abstract: In a vehicle air conditioner, it is determined whether a regenerative electric power generation is performed in an electric motor or not. When it is determined that the electric motor is in an electric power generating state, the electric supply to the electric heater is allowed. Accordingly, the allowed maximum electric-power value of a power consumption amount in the air conditioner becomes greater than the allowed maximum electric-power value set when it is determined that no electric motor is in the electric power generating state. Accordingly, it is possible to restrict an air conditioning feeling from becoming worse while preventing the electric power supplied to the electric motor from being insufficient due to consumption of the electric power of the battery by the air conditioner.

Abstract: A refrigerated merchandiser (100) includes an upright, open-front, insulated cabinet (110) defining a product display area (125) connected in airflow communication with a compartment (120) via an air circulation circuit (122, 114, 116). The flow of refrigerant through the coils (46) of evaporator (40) disposed in the compartment (120) to cool the airflow from the product display area of the refrigerated merchandiser.

Abstract: A condensing unit which includes a base plate having first and second oppositely disposed major surfaces. The base plate may include flanges disposed along the outer periphery of the base plate. A compressor mechanism and a condensing coil are mounted to the first major surface which faces a first direction. The flanges may also extend in the first direction. The second major surface may be substantially free of projections and define a bearing surface for the condensing unit. The motor of the compressor may have a main shaft which extends substantially parallel to the first major surface. The compressor may be a rotary compressor. There may be a conduit in fluid communication with the compressor and condensing coil and define together therewith a fluid circuit. Valves rotatably mounted on brackets and in fluid communication with the fluid circuit and operably couplable to an evaporator circuit may also be provided.

Abstract: A food preparation table includes a food storage compartment which preserves foodstuff items; and a cooled air shower device which is disposed above the food storage compartment and supplies cooled air thereinto. The cooled air shower device distributes the cooled air evenly along a substantially entire length of the storage compartment. Further, the refrigerating system is installed in a chamber disposed inside the food preparation table and is extractable therefrom.

Abstract: A vest including inflatable tubes or chambers which receive cool air from a blower box. The vest includes an outer surface and inner surface, the two surfaces joined to define a multiplicity of tubes. The tubes carry jets which may vent cool air, received from a remote cool air blower box. The jets will ventilate the skin of the wearer both where it is exposed and where the skin is covered by the garment itself.

Abstract: A ground freezing method and system which circulates refrigerated heat transfer fluid through freeze pipes in the ground at a low temperature of at least −52° C. (−62° F.) to minimize drilling for the freeze pipe installation. The heat transfer fluid is preferably aqua ammonia (ammonium hydroxide) because of its beneficial characteristics in this application. The circulating heat transfer fluid is preferably cooled by a refrigeration system that includes low and high stage cycles arranged in a cascade relationship and using ammonia or another refrigerant in the high stage refrigeration system and carbon dioxide as the refrigerant in the low stage refrigeration system.

Abstract: Unit type air conditioner including a base plate in a bottom part thereof, a front panel forming a front exterior of the air conditioner, having a discharge opening in an upper part thereof, a discharge frame in the discharge opening for controlling flow of the air discharged into the room, a barrier on a center part of the base plate to divide the base plate into indoor side base and an outdoor side base, an air guide on the indoor side base, having an indoor fan mounted therein, a discharge guide for guiding the air passed through the air guide to the discharge frame, and a control box at a side of the air guide for fitting electric components therein, thereby diversifying air flow directions to a room, simplifying indoor fan and indoor motor assembly structure, and improving a structure of the control box for easy maintenance of the electric components, and preventing fire from spreading.

Abstract: The invention provides an air conditioning system for an environment (2) within an enclosure (4), the system including an air/water cooling tower (6) in fluid flow communication, via a heat exchanger (10), with a brine/air heat exchanger (8), and a brine regenerator (16) in fluid flow communication with the brine/air heat exchanger (8), the brine/air heat exchanger (8) having an air outlet to the enclosure (4) and an air inlet.

Abstract: An automotive air conditioning refrigerant charging apparatus. In a described embodiment, an automotive air conditioning refrigerant charging apparatus includes an R-134a system quick connect connector, a pressure gauge and a refrigerant can valve. The pressure gauge and the valve are simultaneously and permanently connected to the quick connect connector.

Abstract: The present invention relates to an elastic member and apparatus for a refrigerator compressor. A vibration absorption apparatus for a refrigerator compressor according to the present invention is connected to a foot of the compressor for transmitting the vibration generated when the compressor is operated, and includes an elastic member having a hollow passing through the central portion in an axial direction is formed; a base pan installed on a bottom of the refrigerator machinery room, for supporting the elastic member; a stand coupled with the base pan and passing through the hollow of the elastic member; and a stopper installed on the stand, for preventing the elastic member from being escaped from the base pan. The elastic member comprises a body having a plurality grooves enclosing an inner surface and outer surface thereof to have a vertical section in a zigzag; a projection of an upper portion of the body to which the stopper is forcedly attached; and a base being a lower portion of the body.

Abstract: An apparatus for low volume dispensing of soft drinks preferably uses no mechanical refrigeration equipment, depending instead on heat transfer from a bin of ice to cool water and soft-drink syrup for beverages. A heat-exchange plate desirably includes transfer lines for incoming water to and from a carbonator. A portion of the heat exchange plate, or a second heat exchange plate, includes transfer lines for syrup and for carbonated water. The carbonated water is used to cool the syrup through the second heat exchange plate, and is also mixed with the syrup to dispense a soft drink. Heat from the incoming water and syrup is removed by melting ice in the ice bin, which may be replenished as needed.

Abstract: A selection manifold for use for use with a beverage dispenser apparatus for dispensing both carbonated and non-carbonated beverages and including a plurality of dispensing valves with a syrup and a water line feeding each dispensing valve further comprising a selection manifold connected between at least one of the water lines and sources of both carbonated and non-carbonated water, the manifold having a selecting mechanism allowing a user of the apparatus to easily switch between directing carbonated and non-carbonated water through the water line to the dispensing valve. In a preferred embodiment, the selection mechanism includes a portion that enables a viewer to easily determine whether carbonated or non-carbonated water is selected. In another preferred embodiment, the selection mechanism includes a lock to prevent inadvertent switching of the mechanism.

Abstract: The refrigerating appliance comprises at least one first, second and third refrigerating area for a low, medium or high storage temperature, whereby each refrigerating area has an evaporator (24, 25, 26). The refrigerating appliance also comprises a compressor (19), a refrigerant circuit for supplying compressed refrigerant to the evaporators (24, 25, 26) and for returning expanded refrigerant to the compressor (19), and comprises at least one switching element (22, 22′) for directing, as desired, the refrigerant through one of two branches (I, II) of the refrigerant circuit. In the first branch (I), the evaporators (24, 26) of the first and the third refrigerating areas are connected in series. In the second branch (II), The evaporators (24, 25, 26) of all three refrigerating areas are connected in series.

Abstract: The invention concerns a method which consists in: intake (through 18) of air into said separation unit (16); extracting from said separation unit at least a gas stream (through 20, 26), essentially consisting of an air gas, in particular oxygen or nitrogen, and in directing the or each gas stream towards a combustion chamber (8) of the gas turbine (2); controlling at least one parameter related to the or each gas stream, by acting on a compressor (22, 28) of said gas stream arranged downstream of said air separating unit (16); assigning to the or each parameter a variable setpoint value, based on a value representing the load of the gas turbine (2).

Abstract: Bracelet provided with a foldable clasp, comprising:

Abstract: A method for forming single element arc tubes is provided. The method includes the use of the lost foam process in combination with ceramic forming processes. First, a polymeric material (20) is formed to define the internal dimensions. The outer dimensions are established with an external mold (40), followed by filling the mold with a suspension (60) that hardens. The outer mold is removed and the part is debindered to melt and remove the inner foam shape, followed by sintering to form a substantially transparent ceramic arc tube (70).

Abstract: A method for the manufacture of colored structures of a glass, particularly for applying an inscription to the glass, by locally heating volume elements of the glass by means of a laser beam, which glass contains ions of metals which, in the form of submicroscopic particles, color the glass wherein the local heating of the non-doped glass is accomplished through a solution or gel of a metallic salt which transmits the laser beam well and is directly contacted with a surface of the glass.

Abstract: A concentric multi-tubular burner for synthesizing glass particles having a center port group constituted by a combination of jet ports of raw material gas, combustible gas and oxygen gas, wherein an outer wall of the oxygen gas jet port in the center port group protrudes more toward a burner head than an inner wall of the oxygen gas jet port. The flow rate of oxygen gas jetted from the oxygen gas jet port of the center port group is controlled to be in a proper range.

Abstract: The apparatus for producing glass beads of the present invention comprises a melting pot 2 for heating and melting glass, a nozzle 2A for dripping molten glass 4 in the melting pot 2, which is disposed at the bottom of the melting pot 2, and a liquid glass droplet receiver 11 filled with cooling solution 150 for cooling the liquid glass droplet 10 dripped from the nozzle 2A, which is disposed under the nozzle 2A, wherein the cooling solution 150 is made from a material that forms a bubble layer around the liquid glass droplet 10 as the cooling solution 150 is vaporized due to the heat of the liquid glass droplet 10 during a period when the liquid glass droplet 10 is cooled down to a temperature lower than the glass transfer temperature in the cooling solution 150.

Abstract: The invention relates to a plant and to a process for manufacturing a glass, comprising the production of a main stream of a liquid main glass, by a main plant that includes a main furnace, and the production of an auxiliary stream of a liquid auxiliary glass, by an auxiliary plant that includes an auxiliary furnace, the auxiliary stream being smaller than the main stream, the auxiliary glass having a composition different from that of the main glass and the two streams then being mixed to form a single total stream of the final glass. The auxiliary furnace may especially be fitted with submerged burners, and provide the function of colouring the main glass so that the final glass is a coloured glass. A highly homogeneous and bulk-coloured flat glass may thus be manufactured by an installation having short transition times.

Abstract: The subject of the invention is a process for manufacturing compounds based on one or more silicates of alkali metals, such as Na and K and/or alkaline earth metals such as Ca, Mg, and/or on rare earths, such as Ce, optionally in the form of mixed silicates which combine alkaline-earth metals, such a Ca, with the alkali metal(s) and the rare earth(s), by conversion of silica and of halides, especially of one or more chlorides, or sulfate or nitrate, of the said alkali metals and/or of the said rare earths and/or of the said alkaline-earth metals, such as NaCl, KCl or CeCl4. The heat needed for the conversion is supplied, at least partly, by one or more submerged burners.

Abstract: A method and apparatus for impulsively spinning optical fiber while the optical fiber is being drawn is disclosed herein.

Abstract: The invention concerns a method and a circular machine for manufacturing socks with closed toes with the use of picking-up means placed on several linked sectors, which are movable between an annular position corresponding to the cylinder with needles of the machine and a linear position on two parallel touching lines. The sock is picked-up from the cylinder by the pick-up means in the first position and transferred away from the machine, and while the machine can be restarted, the sock is turned upside down, the linked sectors supporting the pick-up means closed to form to parallel rows and the ends of the sock joined so as to close the toe.

Abstract: Described herein is a method for forming a closed toe in a tubular knitted article, for example a sock, comprising the steps of: setting two end flaps (L1, L2) of the article (M) alongside one another; inserting, inside the loops of at least one first row (X2) of stitches of the flaps set alongside one another, a comb-like structure comprising a plurality of teeth (85); sewing (C) together the loops of at least one second row of stitches, which is set between the first row of stitches (X2) and the body of the tubular article (M); and opening the loops of the first row of stitches.

Abstract: A multifilament yarn including a low number of filaments in the yarn bundle that is highly resilient and that is comfortable to a wearer of fabric including such yarn. The yarns have applications in various fabric constructions, such as multi-layer, weft knit spacer fabrics, multilayer, warp knit spacer fabrics, single layer, warp knit fabrics, and single layer, weft knit fabrics. The highly resilient, non-irritating multifilament yarns and fabrics formed therewith can be advantageously utilized in articles of clothing, apparel, and medical garments.

Abstract: The invention relates to an acceleration sensor for a household device (20) which serves for levelling the appliance and also for weighing the material introduced into the appliance, for example on a laundry unit or crockery and furthermore, in particular for a linen treatment device, for monitoring imbalances. The sensor is based on the principle that a temperature profile, generated by a thermal source, for example, an immersion heater (5), in a scaled chamber (6) which contains a gas, undergoes a displacement as a result of the acceleration, which is measured by temperature sensors arranged on a flat plate (4).

Abstract: An automatic front-loading washing machine with drying capability including a cabinet, a drum, a heater with a blower and air conduit, a condensation device and a sink with connection means for water and waste line, which all are assembled in one integrated unit. It looks like a vanity with a built-in laundry machine and could be installed in any bathroom having standard provision for sink connection. It could also replace any existing standard sink giving customer a laundry capability.

Abstract: Method for controlling a full automatic washing machine, the method comprising a washing cycle, a rinsing cycle, and a dewatering cycle, wherein the washing or the rinsing cycle includes the step of rotating an inner tub at a high speed higher than a preset speed in one direction, thereby making a centrifugal force caused by high speed rotation of the inner tub, to push laundry against a wall of the inner tub, to enforce washing water in the inner tub to penetrate through the laundry at a speed higher than required to make the washing done, and to pump the washing water penetrated through the laundry and discharged into an outer tub upward, to recirculate to the inner tub.

Abstract: Disclosed is a detergent storing assembly and washing machine using the same, by which a lid part and a detergent box constructing the detergent storing assembly are correctly assembled to each other. The present invention includes a tub having an open front side to hold water and detergent, a drum rotatably installed in the tub to hold laundry, a motor rotating the drum, a cabinet having the tub and the motor inside, and a detergent storing assembly at the cabinet to provide the detergent to detergent to the tub. And, the detergent storing assembly includes a detergent box having an open topside to store the detergent and to provide the detergent to the tub for washing, a lid part fixed to the topside of the detergent box to open/close, and an incorrect-assembling preventing means for leading the lid part to a correct position for a reciprocal assembling of the lid part and the detergent box.

Abstract: Washing machine including a washing tub having an inner tub rotatably mounted for holding and washing laundry, and an outer tub having the inner tub mounted therein, a driving device for rotating the inner tub, a body having a base plate, one pair of side panels at opposite side edges of the base plate, a rear panel at rear edges of the base plate and the side panels, and a top panel on top of the side panels and rear panel, and the washing tub and the driving device held therein, and a front panel rotatably engaged with, supported on, and detachably mounted on, a front part of the body, thereby permitting easy and fast assembly/disassembly of the cabinet.

Abstract: A drum-type washing machine is provided, by which a rotational speed of a drum is stably and accurately controlled during washing and dewatering by adopting a simple induction motor and a set of unidirectional bearings acing as a clutch.

Abstract: A laptop computer lock includes a primary body having a tapered extension extending outward from the primary body and having a through hole defined through the tapered extension. A secondary body is movably received in the primary body and has a linkage extending out of the primary body. A retaining device is received in the primary body and has a leverage operably engaged with the linkage so that the leverage is able to pivot relative to the secondary body. The tapered extension of the primary body increases available space for a securing device to secure the laptop computer without tilting the laptop computer.

Abstract: A lid lock apparatus for a glove box is attached to inside of a lid to engage hook portions with the glove box. The lid lock apparatus includes a swing member a swing axis of which is rotatably supported by a lid of the glove box; a pair of lock arms, which are disposed in a symmetrical manner with respect to the swing axis, extend in a horizontal direction, and each includes the hook portion at a tip end thereof; and a subassembly member for bringing the lock arms close to each other and forming the lock arms and the swing member in a subassembly. The swing member is disposed in a symmetrical manner with respect to the swing axis and includes a pair of cam grooves extending with slanting. The lock arms include cam pins for engaging with the cam grooves to move the lock arms in opposite directions.

Abstract: A locking cap is selectively locked into place within a tubular opening, such as the open end of a standpipe used to charge a building sprinkler system. The locking cap has an expandable sleeve and a spreader member. As a key is turned, the spreader member is drawn into the expandable sleeve which is urged outward. The outward movement of the expandable sleeve increases a frictional component such that the expandable sleeve becomes frictionally locked within the tubular opening. The key has an end design that is complemented by an end of an actuator shaft such that the likelihood of unauthorized removal of the locking cap is reduced.

Abstract: A motor vehicle anti-theft device adapted to disable the brake pedal of the vehicle. In a first embodiment the device includes an outer housing and an inner shaft member mounted within the housing for relative rotary and telescopic movement. A first clamp structure is journaled on the shaft and a second clamp structure is threaded on the shaft so that as the shaft is rotated in the housing the clamp members are moved toward and away from each other into an out of locking engagement with the brake pedal. The inner shaft and outer housing are slid telescopically relative to each other to firmly engage the fire wall of the vehicle with the clamp members clamped about the brake pedal and a lock structure is provided to preclude relative rotary and relative longitudinal movement of the housing and the shaft.

Abstract: An extensible automobile lock in the invention has a body, a receiving tube and a telescoping rod. The body has a receiving housing provided with a stop pin and a locating pin therein. When in use, the receiving tube and the telescoping rod can be pulled outwards to make their hooks hooked on an automobile steering wheel with the receiving tube stopped by the stop pin and engaged by the locating pin so as not to be withdrawn into or pulled outwards to slide off the body, thus achieving an effect of anti-theft. When not in use, only to rotate a lock core to be in an unlocked status to allow the telescoping rod to be slid back into the body to push the stop pin upwards to allow the receiving tube to be withdrawn into the body, thereby reducing the automobile lock to a minimum dimension convenient for storage.

Abstract: An anti-vandal door lock apparatus in which a cylinder lock such as a mortise lock cylinder is employed for unlatching a cylindrical lock assembly. In a preferred embodiment, the mortise lock cylinder is mounted to the outside of a door trim such as a pull plate, with the cylindrical lock mounted to the inside of the trim, and the pull plate is mounted to the door, in such manner as to effect an anti-vandal door lock assembly. Preferred embodiments may include a hold-back feature, as well as a feature for facilitating secured removal of the mortise lock cylinder as for re-keying.

Abstract: The present invention provides biological fertilizer compositions that comprise yeast cells and poultry manure. The yeast cells of the invention have an enhanced ability to fix atmospheric nitrogen, decompose phosphorus minerals and compounds, decompose potassium minerals and compounds, decompose complex carbon compounds, overproduce growth factors, overproduce ATP, decompose undesirable chemicals, suppress growth of pathogenic microorganisms, or reduce undesirable odor. The biological fertilizer composition of the invention can replace mineral fertilizers in supplying nitrogen, phosphorus, and potassium to crop plants. Methods of manufacturing biological fertilizer compositions, and methods of uses are also encompassed.

Abstract: The present invention provides a one-stage method of preparing a urea-formaldehyde plant nutrient solution with high percentage of Slow Release Nitrogen (SRN) moiety and low amounts of methylol by-products. A solution of formalin is reacted with urea in the presence of small amount of alkaline material to maintain a pH greater than 7. After the urea has dissolved, an ammonia reactant is added to the reaction mixture. The reaction mixture is exothermically (and, if needed, externally) heated to at least about 90° C. and held for about 70-75 minutes, during which a calculated amount of alkaline material is added, typically in three portions over the first 45 minutes of the 70-75 minute period.