Abstract: A coupling device which is configured such that respective explosives for blasting work are coupled to front and rear sections thereof. The coupling device includes cylindrical bodies, one of the bodies being movable away from or close to another one of the bodies, a partition provided inside a predetermined one of the bodies to divide an inner space of the predetermined body, and an expandable support section provided between the bodies to connect the bodies to each other. The expandable support section forms a cylindrical shape together with the bodies when one body is moved away from the other body and is radially expanded when one body is moved close to the other body. The explosives can be easily inserted into a blasting hole and be positioned in the center of the blasting hole, thereby increasing the efficiency of blasting work.

Abstract: A coupling device which is configured such that respective explosives for blasting work are coupled to front and rear sections thereof. The coupling device includes cylindrical bodies, one of the bodies being movable away from or close to another one of the bodies, a partition provided inside a predetermined one of the bodies to divide an inner space of the predetermined body, and an expandable support section provided between the bodies to connect the bodies to each other. The expandable support section forms a cylindrical shape together with the bodies when one body is moved away from the other body and is radially expanded when one body is moved close to the other body. The explosives can be easily inserted into a blasting hole and be positioned in the center of the blasting hole, thereby increasing the efficiency of blasting work.

Abstract: The refrigerator cable ejection method is used to eject one end of a cable out of an outer liner through an ejection hole formed at the outer liner before a filling space is filled with a foam insulation material in a refrigerator constructed in a structure in which the outer liner is fitted outside an inner liner, the cable is distributed in the filling space defined between the inner liner and the outer liner, and the filling space is filled with a foam insulation material while the cable is distributed in the filling space. The method is performed to eject one end of the cable out of the outer liner through the ejection hole at the time of fitting the outer liner outside the inner liner using an ejector including a pass-through member mounted outside the inner liner corresponding to the ejection hole such that the cable passes through the member.

Abstract: A radio frequency filter comprising: housing body having input/output connectors and containing space which is divided into spaces by means of diaphragm; at least one resonator rod arranged in the housing; housing cover coupled to the housing body; wherein the housing body and the housing cover are coupled to each other by laser welding. The radio frequency filter according to the present invention can reduce PIMD due to reduce Contact Nonlinearity, and inhibit to erode away because the laser welding method dissolve different metallic materials each other and take a convalent bond, and reduce its manufacturing process time and cost because it is unnecessary drilling a hole and fastening a screw to fasten the housing and the housing cover each other and can simplify its manufacturing process and raise productivity because only irradiate laser beam on irradiated area of the housing cover.

Abstract: A radio frequency filter comprising: housing body having input/output connectors and containing space which is divided into spaces by means of diaphragm; at least one resonator rod arranged in the housing; housing cover coupled to the housing body; wherein the housing body and the housing cover are coupled to each other by laser welding. The radio frequency filter according to the present invention can reduce PIMD due to reduce Contact Nonlinearity, and inhibit to erode away because the laser welding method dissolve different metallic materials each other and take a convalent bond, and reduce its manufacturing process time and cost because it is unnecessary drilling a hole and fastening a screw to fasten the housing and the housing cover each other and can simplify its manufacturing process and raise productivity because only irradiate laser beam on irradiated area of the housing cover.

Abstract: A display assembly that may be used with an electrical appliance. The display assembly includes a light guide plate having a first surface and a second surface, an emitting surface formed from a portion of the first surface, an incident surface formed from a portion of the second surface, a light diffusion film adjacent to the emitting surface, and a light conversion film adjacent to the incident surface. The light guide plate is made of a substantially transparent material adapted to guide light between the first surface and the second surface. The first surface is relatively larger than the second surface. The light diffusion film is adapted to substantially uniformly diffuse light from the emitting surface, and the light conversion film is adapted to substantially convert light from a first wavelength to a second wavelength. The light conversion film extends substantially over the portion of the second surface.

Abstract: Disclosed herein is a refrigerator cable ejection method that is capable of more easily ejecting a cable distributed in a refrigerator outside the refrigerator at the time of manufacturing the refrigerator. The refrigerator cable ejection method is used to eject one end of a cable out of an outer liner through an ejection hole formed at the outer liner before a filling space is filled with a foam insulation material in a refrigerator constructed in a structure in which the outer liner is fitted outside an inner liner, the cable is distributed in the filling space defined between the inner liner and the outer liner, and the filling space is filled with a foam insulation material while the cable is distributed in the filling space.

Abstract: The present invention provides a method for producing an inosine derivative represented by the following general formula (1) including the steps of subjecting an inosine derivative of general formula (3) to dithiocarbonylation and carrying out radical reduction of the obtained compound. According to the present invention there can be produced compounds useful as anti-AIDS drugs on industrial scale. wherein R1 may be the same or different and are each benzyl group, benzhydryl group or trityl group, each of which may have a substituent in general formulas (1) and (3).