PURPOSE: An absorption and expansion type duct silencer for air conditioning which performs noise reduction owing to the absorption and expansion of sound wave is provided to reduce noise components of low-frequency and high-frequency using the expansion and absorption of sound wave. CONSTITUTION: An absorption and expansion type duct silencer comprises an outer case(100), flanges(200), and multip...

The joint mechanism for a robot of the present invention is configured to include a drive shaft that has an inclined plate; a connector one end whereof is inserted and installed into the inclined plate to slide upon rotation of the inclined plate, and the other end whereof has a through hole formed thereon; a shaft in the center whereof a through hole is formed, that achieves mutual connection wit...

PURPOSE: A sleeve is provided to prevent a vertical reinforcement bar or a horizontal reinforcement bar embedded in the concrete from being corroded and prevent leachate from flowing between a body and the concrete. CONSTITUTION: A sleeve(A) is constituted as follows. A sealing portion(10) is integrated with one side of a cylindrical body portion using synthetic resin. The sealing portion is forme...

A sampler, sample holder and an immersion lithographic apparatus comprising a sampler is disclosed. In an embodiment, a sampler is provided to collect particles in an immersion system of a lithographic apparatus. The sampler comprises a holder base having a collector surface. The collector surface is configured to collect and store contaminants. The sampler may be located on a surface of the immer...

The present invention relates to a voltage-generating apparatus for a magnetic therapeutic device and to a magnetic therapeutic device. The voltage-generating apparatus for a magnetic therapeutic device, which supplies a current to a coil for generating magnetic fields for treatment, comprises: an alternating current voltage supply unit; a transformer having a primary inductor that is connectible ...

PURPOSE: A data communication device using an AC power line is provided to simplify a device, thereby saving manufacture costs of a device. CONSTITUTION: A zero cross reference generating circuit(210) receives an AC voltage between power lines, L(130) and N(120), to generate a reference signal. A microcontroller(220) stores a signal pattern based on the zero-cross reference signal created in the z...

PURPOSE: A spring footwear is provided to make a user stand steadily while relaxing impact when the user lands his feet on the ground. CONSTITUTION: A spring footwear includes a shoe(102) which fixes user's foot, a sole(104) attached to the bottom of the shoe, a base(106) which is placed at the site downwardly distanced from the sole and comes into contact with the ground, and a spring(108) instal...

PURPOSE: A plastic card and a method for manufacturing the same are provided to prevent the damage of a printing layer by printing a design on the rear of a printing sheet and forming a metal decoration on the side in which the printing layer is not formed. CONSTITUTION: A plastic card comprises: an upper transparent sheet(10) comprising the upper side of the plastic card; a printing sheet(20) whi...

PURPOSE: A hot water heat exchanger for a boiler is provided to improve heat exchange efficiency by reducing the temperature degradation by the heat exchange of hot water. CONSTITUTION: A hot water heat exchanger for a boiler comprises: a top finishing plate; a heating water inlet(201) wherein heating water which is heated by a boiler is flown in; a heating water outlet(202) which water is heated ...

PURPOSE: A heat exchanging plate for a hot water heat exchanger is provided to rapidly creating hot water by improving the efficiency of heat-exchanging by reducing temperature degradation by heat-exchanging of heating water. CONSTITUTION: A heat exchanging plate for a hot water heat exchanger comprises: a heating water inlet(101) wherein heating water which is heated by a boiler is flown in; a he...

PURPOSE: A yarn stretch system of an air jet loom is provided to easily move a location of the yarn stretch system according to a width of woven fabric, and to prevent damage of a body when the yarn stretch system is installed. CONSTITUTION: A yarn stretch system of an air jet loom comprises a main body(1) with a protrusion part adhered closely to a yarn guide groove formed on a reed frame. A suct...

The present invention relates to cell labeling and imaging using a multifunctional perfluorocarbon (PFC) nanoemulsion. In more detail, the perfluorocarbon nanoemulsion containing optically characteristic nanoparticles is provided with both optical characteristics and 19F magnetic resonance characteristics, and is thus capable of carrying out magnetic resonance imaging (MRI) and optical imaging (OI...

PURPOSE: A driving method and terminal of the E-book terminal. The movement of the terminal is used without the button operation for the scene change through the sensor built in. The scene change is controlled easily. CONSTITUTION: A sensor senses the acceleration information of the movement operation of the terminal. The angle of each shaft is produced from the acceleration information. The mean ...

An antenna component for implementing an internal multi-band antenna of a small-sized radio device. The antenna component (200) has a dielectric substrate (210), the conductive coating of which forms a radiating element (220). This has two resonances for forming two separate operating bands. The lower resonance is based on the entire element and the upper resonance on the head part (221) of the el...

PURPOSE: A transportable pavement damaged part reconstructing apparatus is provided to exclude lots of manpower and time and to reconstruct the damaged part of a pavement with a simple method. CONSTITUTION: A transportable pavement damaged part reconstructing apparatus comprises a road damaged part construction unit(200), a road paving material injecting unit(300), and a storage unit(400). The roa...

Disclosed is a cooling apparatus for a semiconductor component having a coolant inlet flow path on a coolant flow path connecting a coolant inlet and a coolant outlet, the coolant inlet flow path having a diffuser shape, in which its cross-sectional area increases from a coolant inlet to a portion where cooling fins start to appear. In the cooling apparatus, the coolant inlet flow path meets the f...

A steering system of a variable impact energy absorbing structure having a guide and a slit plate installed on an upper bracket is provided to have a simple structure and to increase the reliability of the impact energy absorbing function by changing a slit plate using one single guide. The steering system of a variable impact energy absorbing structure having a guide and a slit plate installed on...