Abstract: A thermoacoustic refrigerator includes at least one pair of pulse combustion tubes (10), preferably Rijke tubes, each tube (10) having a pair of spaced-apart Stirling engines (12), coupled together but with no separating membrane therebetween.

Abstract: Disclosed is a heat pump heating/cooling system that uses a hybrid heat source that may include air heat, groundwater heat, brine and in-line heaters. The heat pump includes 1) a device for compressing, condensing, gasifying, and circulating cooling/heating media and exchanging heat with water refrigerant; 2) a device for storing heat energy in a storage tank; 3) a device for loading a load through a four-way fan coil unit; and 4) a control panel. To remove frost on the exterior of an evaporator, the evaporator is temporarily stopped, and brine at a temperature of 15° C. to 20° C., which receives groundwater heat from a brine heat exchanger and receives heat from an in-line heater, is supplied to a brine supply pipe installed around the evaporator to melt and remove the frost on the exterior of the evaporator and then is discharged at a temperature of ?3° C. to 5° C.

Abstract: An apparatus for defrosting an evaporator in a refrigeration system using an infrared emitting diode includes i) a frost detection sensor configured to receive a frost sensing signal from an output part of a control processor and to transmit a frost detection signal into an input part of a control processor, wherein the frost detection signal is generated by projecting infrared to the frost and receiving reflection-infrared from the frost; ii) a control processor configured to convert the frost detection signal into a digital signal in the signal converting part, to evaluate if the frost detection signal is higher than a threshold value which is set from a signal setting part, and to transmit the operation signal to the defroster, as well as the display signal to the signal display part; and iii) a defroster.

Abstract: A damper roller system is provided. The system includes an external rotating element connected to a bearing housing. The bearing housing is filled with a viscous fluid and includes at least one bearing element immersed in the viscous fluid. The bearing housing is connected to at least one sealing element sealing the viscous fluid inside the bearing housing. The bearing element is connected to a non-rotating shaft having opposite first and second ends. The shaft is held in place at the first end by the bearing element and is rigidly connectable at the second end to an object. The first end is nail-shaped and immersed in the viscous fluid. A rotation of the external rotating element drives a common rotation of the bearing housing and of the bearing element, and shears the viscous fluid, causing a damping motion proportional to a rotational speed of the external rotating element.

Abstract: A damper roller system is provided. The system includes an external rotating element connected to a bearing housing. The bearing housing is filled with a viscous fluid and includes at least one bearing element immersed in the viscous fluid. The bearing housing is connected to at least one sealing element sealing the viscous fluid inside the bearing housing. The bearing element is connected to a non-rotating shaft having opposite first and second ends. The shaft is held in place at the first end by the bearing element and is rigidly connectable at the second end to an object. The first end is nail-shaped and immersed in the viscous fluid. A rotation of the external rotating element drives a common rotation of the bearing housing and of the bearing element, and shears the viscous fluid, causing a damping motion proportional to a rotational speed of the external rotating element.

Abstract: A submerged buoyant floating platform with blocked vertical thrust. Above the platform an electrolyser may be placed inside a hollow container. Under the platform may be a hollow container filled with ballast, connected by pipes or chains to the outer ring of the platform which provide rigidity to the entire structure. A storage tank for the hydrogen produced by the electrolyser may be attached to the hollow container. The entire structure may be anchored with chains attached to bottom weights sitting on the ocean floor. The structure may be used as a support for a tower including a wind turbine. Additional chains attached to the structure bottom weights on the sea floor may link the structure to an aquaculture facility and to floats which hold the cages used in aquaculture. The floats may be linked to additional bottom weights placed on the sea floor.

Abstract: The invention refers to a novel submerged floating foundation body (6,13;16) which is mounted to the bottom (1) of the sea or a lake by cables or chains (3) and supporting a structure especially a wind turbine tower (10) below the wave motion area (8). It may have also a mariculture cage (7) on said floating body.

Abstract: The invention is related to a method of positioning chains or pipes on the upper part of a floating foundation in order to make the foundation more rigid and stable.

Abstract: A remote control toy set includes a vehicle having a battery and a receiver for receiving a wireless signal. The set also includes a controller having a compartment for storing the vehicle, and a transmitter for transmitting the wireless signal to the vehicle. A charger is removably stored within the compartment for charging the battery.

Abstract: The invention is data recording (and storage) device for use in a severe environment. A connection is made between a cartridge 40 comprising a data recording and storage means on its receptacle 30 by contact and not by insertion, and the contact is made for each electrical contact by the cooperation of a plug 10, mounted elastically by a means 11 on receptacle 30 and a stud 12, 16 or 18 mounted on cartridge 40. The invention also comprises a process for cartridge-receptacle engagement which ensures self-cleaning of contacts. The device is intended for use on airliners, combat aircraft, ships, helicopters, combat vehicles such as, for example, armored vehicles, spacecraft and similar equipment.

Abstract: Disclosed is an electromagnetic circuit wherein coils are wound in a forward (clockwise) direction and in a reverse (counterclockwise) direction and semiconductor switches are mounted in front of the respective coils so that a non-induction line becomes a polarity-converting point of an alternating magnetic flux by controlling currents. Accordingly, a mechanical dynamic power of a high torque can be obtained by electrical energy.

Abstract: An energy conversion magnetic circuit is constituted with magnet pole pieces of magnets or armatures which are in parallel with respect to the shaft to obtain a dynamic force or an electromotive force. The magnetic circuit for a generator or an electric motor has a rotating shaft, a plurality of supporters fixedly mounted in a perpendicular direction to the circumference of the rotating shaft, a plurality of rotors arranged in parallel with respect to the shaft on each end of the plurality of supporters to be rotated by attraction force and repulsion force of a magnetic field, and a plurality of armatures having a coil wound on the body thereof. The coil is mounted at an interval outside the rotors and receives induced alternate magnetic flux of the rotors to generate a rectangular wave electromotive force or to obtain a high torque with input of electrical energy.

Abstract: An ultrasonic testing method to evaluate the structural integrity of lead-acid batteries terminal posts including the steps of transmitting ultrasonic waves from a transducer through the body of the lead-acid battery posts, detecting the internal defects in the terminal posts by a reflected echo from the internal defect, and deciding to reject or to accept a lead-acid battery by comparing and analyzing, through hardware and software, the transmitted and reflected ultrasonic waves of the bad terminal posts against the reference of transmitted and reflected ultrasonic signal of a good terminal post. The internal defects detected by this method are pores, flaws, and cracks.

Abstract: A lead alloy for lead acid-battery grids which essentially consists of about 0.05-0.07 wt % calcium; about 0.09-1.3 wt % tin; about 0.006-0.010 % silver; about 0.0100-0.0170 wt % barium and about 0.015-0.025 wt % aluminum with the balance lead. This lead alloy allows the improvement of the age hardening step, by eliminating the high temperature treatment process required for silver alloys in the manufacturing of lead-acid batteries. By using this lead alloy, a longer service life of the lead-acid batteries are also obtained by increasing the corrosion resistance and the mechanical strength of battery grids manufactured by the book molding process. Additionally, the reduced silver level used dramatically mitigates the problem of silver elimination from the stream of recycled lead in the secondary production of this metal.

Abstract: An apparatus for generating rotative force using spring according to the present invention permits rotative force of an input shaft to be intermitted to an acceleration gear by an intermitting gear, an available time for the rotation of an output shaft to be confirmed by an indicating means, and the operation to be stopped by a stopping means. In addition, the apparatus causes the rotation of the output shaft to be stopped exactly in ‘0’ position of the available time by a setting means. Therefore, since the present invention intermits rotative force only by the intermitting gear, a production cost is reduced by the simple configuration, and thus the apparatus according to the present invention could be provided with low cost. In addition, the convenience in use is increased, since user could confirm the available time of rotation, the operation could be stopped while generating the rotative force, and the apparatus could operate in an inclined or upside down position.

Abstract: An electrolyte solution which increases the service life and charge acceptance of lead-acid batteries. The electrolyte solution includes an aqueous solution of sulfuric acid and boric acid. The boric acid has a concentration from about 2.5 grams per liter to less than 5.0 grams per liter of the aqueous solution of sulfuric acid. This electrolyte solution is used as a method of improving the service life and charge acceptance of lead-acid batteries.

Abstract: An apparatus for generating rotative force using spring according to the present invention permits rotative force of an input shaft to be intermitted to an acceleration gear by an intermitting gear, an available time for the rotation of an output shaft to be confirmed by an indicating means, and the operation to be stopped by a stopping means. In addition, the apparatus causes the rotation of the output shaft to be stopped exactly in ‘0’ position of the available time by a setting means.

Abstract: The present invention relates to a portable roaster, which can make fire with charcoal as well as with gas, has a case for storing extra butane gas container, and can cook the meat evenly by rotating the meat.