The invention relates to a cutter head (10) for dredging ground under water, this cutter head being suitable for attachment rotatably around a central axis to the ladder (2) of a cutter suction dredger (1) and for being moved through the ground (9) therewith in a lateral sweeping movement, the cutter head comprising a base ring (13), a hub (14) situated at a distance in the direction of the centra...

Sicherungsvorrichtung für die Absichtung eines beweglich gelagerten Türflügels (8, 105, 106) oder dgl., bei der die Sicherungsvorrichtung (1) auf die Kante (63) des Türflügels (8, 105, 106) direkt oder indirekt angebracht ist sich im Wesentlichen von der Oberkante bis zur Unterkante des Ganzglastürflügels (8) erstreckt, und im Wesentlichen bestehend aus einer Halterung (2), mit mindestens einem en...

PURPOSE: A steel concrete composite beam and a method of manufacturing the same are provided to maximize pre-stress caused by the increase of eccentricity and avoid the cross section of lower flange concrete excessively increasing to induce pre-stress. CONSTITUTION: A steel concrete composite beam(10) comprises a steel web plate(11), a plurality of fixed members(12), a steel casing(13), lower flan...

PURPOSE: Structure and method for reinforcing earthquake resistance of a concrete structure are provided to reinforce earthquake resistance without increase in self weight on the filed according to various field conditions of a building and prevent decrease in durability of the building. CONSTITUTION: A structure for reinforcing earthquake resistance of a concrete structure is as follows. An earth...

PURPOSE: A wireless power switch using a small-sized passive generator is provided to control the on/off of a lamp by using electrical energy through transmitting and receiving of a wireless signal. CONSTITUTION: In a wireless power switch using a small-sized passive generator, a body(100) is buried to a wall and has the penetration hole in front side. A ratchet(200) is formed inside the body and ...

PURPOSE: A wall structure for a water tank with an integral structure is provided to prevent overturn when a wall is constructed or improve the work convenience of a worker. CONSTITUTION: A wall structure for a water tank with an integral structure is as follows. Cast-in-place concrete is placed to the space between an inner wall(100) and an outer wall(200) to form an integral wall. A main post(11...

PURPOSE: A post structure for a water tank with an integral structure is provided to ensure more improved durability and structural rigidity when the post of a water tank is constructed since a PC post is integrated with a PC girder. CONSTITUTION: A post structure for a water tank with an integral structure comprises a PC post, and a PC girder. The PC post comprises a body(110), a protrusion(120),...

PURPOSE: A pipe connection device for easily inserting a pipe by forming an inclined plane on a snap ring is provided to reduce a manufacturing time and manufacturing costs by compressing the outer circumference of the pipe and a snap ring in a pipe connection process. CONSTITUTION: A pipe connection device for easily inserting a pipe by forming an inclined plane on a snap ring comprises a pipe(11...

PURPOSE: A connection structure of a forward serially connected light emitting cell array is provided to prevent defects in a chip mounting process and simplify a process by structuralizing a P type semiconductor and an N type semiconductor of a light emitting cell with a simple metal thin film. CONSTITUTION: A plurality of light emitting cells(100) is arranged on a substrate with a physically sep...

PURPOSE: An unserviceable areas light using a solar cell is provided to reduce the capacity of a battery by using an LED having high efficiency as a light source. CONSTITUTION: In an unserviceable areas light using a solar cell, a solar cell portion(10) comprises a secondary battery. The solar cell portion stores electricity. A light sensor(20) is installed in the printed circuit board of a drivin...

PURPOSE: A moving belt type sludge eliminating apparatus is provided to improve the space using efficiency of a precipitating bath by simplifying the internal structure of the precipitating bath. CONSTITUTION: A moving belt type sludge eliminating apparatus includes moving plates(400, 500), a driving part(150), and a dividing wall(200). A plurality of moving plates forms layers in a precipitating ...

PURPOSE: Existing precipitating bath modified sewage treating system and method for eliminating total phosphorus are provided to improve the quality of discharging water by eliminating total phosphorus from the discharging water. CONSTITUTION: Existing precipitating bath modified sewage treating system for eliminating total phosphorus includes a reacting bath(200), a first precipitating bath(500),...

PURPOSE: A security authentication method of a smart phone is provided to perform security authentication by comparing a face image in a smart phone with a face image in face authentication database. CONSTITUTION: A face authentication server extracts face information from a face image that is received from a smart phone(S7). The face authentication server stores the extracted face information in ...

PURPOSE: An electron field-based water treating apparatus is provided to prevent the generation of additional scales by destroy the crystalline compound of existing scales contained in water to eliminate scales. CONSTITUTION: An electron field-based water treating apparatus includes a cylindrical housing(10), an electrode rod(20), a fixing part(30), a pump, and a valve. A minus electrode is in con...

PURPOSE: A pulling force testing device of a fixed nail for a sleeper is provided to improve safety by accurately confirming the pulling force of a fixed nail. CONSTITUTION: A pulling force testing device(1) of a fixed nail for a sleeper comprises a fixed unit(10), a pressing unit(20), and a display unit(30). The fixed unit is fixed to the head(102) of a fixed nail(100) which fixes a rail(120) to ...

PURPOSE: A CCTV recording method and device thereof using a sensor lamp are provided to implement a black box by installing a CCTV inside a human sensor. CONSTITUTION: A CCD camera and microphones(5,6) are installed inside a case(2) of a sensor lamp. A CCTV recording device(19) and a power unit are operated for the lighting period of the sensor lamp. A slot of the CCTV recording device is opened f...

PURPOSE: A pillow is provided to comfortably support the head and neck and to improve air ventilation when a user uses the pillow. CONSTITUTION: The pillow comprises: a head supporting part(10) which is concavely formed in order to support the head; a neck supporting part(20) which is connected from the head supporting part and is convexly formed; a plurality of first groove parts(50) formed in th...

PURPOSE: A foot pillow is provided to comfortably support the ankle and to prevent the ankle from being separated from the foot pillow. CONSTITUTION: A foot pillow comprises: a pair of ankle supporting parts(10) which are formed to be separated from each other at an interval; a central convex part(20) which is convexly formed between a pair of ankle supporting parts; a pair of outside convex parts...

PURPOSE: A steel pipe for excavation and a method of forming a circular steel pipe tunnel using the same are provided to minimize noise and vibration in excavation and minimize an excavation period. CONSTITUTION: A steel pipe(1) for excavation comprises a leading end(10), and a rear end(20). The leading end has an excavation function. The rear end is formed on the opposite side of the leading end ...

PURPOSE: A system for managing a standby power in building and a control method thereof are provided to improve use stability by compensating a problem of power off while a manual function is performed. CONSTITUTION: In a system for managing a standby power in building and a control method thereof, a power sensor(110) is connected to a stand-by power outlet(30). The electric energy sensor senses p...