Abstract: A windmill-type electric generation system including four rotary blade units (10, 12, 14, 16) mounted on opposite ends of corresponding rotary shafts in pairs, a first power transmission mechanism for transmitting the rotating movement of the blade units (12, 14) to an armature (110) of an electric generator (100), a second power transmission mechanism for transmitting the rotating movement of the blade units (10, 16) to a magnetic pole (120) of the electric generator (100), and the electric generator (100) for generating electricity through the rotation of the armature (110) and the magnetic pole (120) in the opposite directions, which is accomplished by the rotating movement of the blade units (10, 12, 14, 16) transmitted to the armature (110) and the magnetic pole (120) by the power transmission mechanisms.

Abstract: Disclosed is a prefabricated type flowerpot block. It can be assembled in a simple manner, it can perform root-balling for a predetermined period and it can allow a plant to be transplanted to thus be conveniently moved. Accordingly, it eliminates the trouble of planting a plant to be transplanted in the ground during a transplanting process, and thus it prevents the roots of a plant to be transplanted from being damaged while the plant is moved to a transplanting place. The prefabricated type flowerpot block can also function as a flowerpot to plant therein any size of plant.

Abstract: We present a high-efficiency crankless reciprocating steam engine that loses only a small amount of energy when the rectilinear motion of its piston is changed into the rotary motion of its driveshaft. The present invention continuously rotates a valve in one direction while alternately introducing steam into two piston housing chambers to generate the rotary force of the driveshaft. Therefore, engine efficiency is greatly increased because the inertial force losses in the valve are much smaller compared to the case when the valve rotation stops or changes direction.

Abstract: Disclosed herein is a pedal equipped with a displacement detecting sensor using like magnetic poles. The pedal includes a pedal unit, a shock-absorbing unit, a sensor inserting unit, a rod unit, and a sensing unit. The pedal unit includes a support plate, an actuating pedal coupled to the support plate, a shock-absorbing hinge, and a coupling hinge. The shock-absorbing unit includes a shock-absorbing mounting part, support shafts provided in shock-absorbing cylinders, and shock-absorbing springs. The sensor inserting unit includes an insertion housing in a center of the shock-absorbing unit, an upper permanent magnet seated in an upper support seat, a lower permanent magnet seated in a lower support seat, and a sensor support. The rod unit includes a rod mounting part having a rod mounting hole, and cylindrical insertion rods. The sensing unit includes a sensor housing at a center in the rod unit, and a displacement sensor.

Abstract: Disclosed herein is an orthopedic knee joint brace, which permits smooth knee exercise, increases the durability of a spring, and ensures structural rigidity in a shock absorbing operation. To this end, the orthopedic knee joint brace includes an upper cuff assembly (100) having an anatomical shape of a thigh to support the thigh, and a lower cuff assembly (200) provided under the upper cuff assembly and spaced apart from the upper cuff assembly. The orthopedic knee joint brace includes a pair of damping pivot assemblies (300) coupling facing ends of both sides of the upper and lower cuff assemblies to each other. Each of the damping pivot assemblies has a multiple pivot link structure and a guide damping structure to correspond to the movement of the knee joint.

Abstract: The present invention relates to an apparatus and process for oxygen concentration that makes possible the production of highly purified concentrated oxygen by modifying the structure of the adsorption bed and with various valves coupled thereto, and which can increase purity of the oxygen produced and reduce mechanical energy and consumption of electricity of the air compressor.

Abstract: A multi-functional metal shield case and a method for making the same are provided. The multi-functional metal shield case includes a metal main body and an electrically non-conductive and heat conductive silicon layer. The metal main body includes a base and sidewalls integrally bent along edges of the base, and the electrically non-conductive and heat conductive silicon layer is formed on inner sides of the base and the sidewalls. Accordingly, heat can be rapidly transferred to the metal main body and emitted to an outside. Since the heat conductive silicon layer is non-conductive, an electric shock does not occur between the electronic component and the metal shield case. Further, since the heat conductive silicon layer is in contact with the electronic component, heat can be transferred more rapidly.

Abstract: A ventilation sole for shoes is disclosed. The ventilation sole of the present invention has a vent hole (110), which is formed in a sidewall of the sole, an air supply hole, which is formed in the upper surface of the sole (100), and an air passage, which communicates the air supply hole with the vent hole, such that outside air is supplied into the shoe. Furthermore, the present invention is characterized in that a vent hole control device (200), which is opened or closed by a knocking operation, is installed in the vent hole (110) such that part thereof protrudes outside the sole (100), thus making it possible for a user to selectively open or close the vent hole (110), as necessary.

Abstract: A man's underpants having a penis of the wearer received in an arc-shaped groove of the soft penis separator so as to separate the penis and scrotum from each other, thereby preventing the contacting portion between the penis and scrotum from humidity and odor and also preventing the penis from being moved or inserted between the flesh inside of the thigh during exercising or sitting for long time.

Abstract: Provided is a door hinge. The door hinge includes a fixing member, an activating member, a guide pin, and a guide frame. The fixing member is installed at a door frame. The activating member is installed at a door, and connects with the fixing member by a hinge, and opens and closes the door. The guide pin is fitted into guide holes provided at both sides of the activating member, and elastically moves up/down along the guide hole by a tension force of a spring installed inside the activating member. A guide frame is combined to the guide pin, and connects at its lower end with the fixing member by a pin, and rotates about the pin depending on an operation of the activating member. The guide hole is round (R) shaped at its center, and has a curved shape in entirety.

Abstract: A pressure-sensitive displacement sensor comprises: (A) a contact portion (11) which includes: a semi-conductive matrix layer (14) containing conductive materials with a predetermined density, wherein the semi-conductive matrix layer is formed with a soft material having elasticity and has a resistance (Rx) under a normal condition without subjecting to a contact pressure, and when the semi-conductive layer is pressed, a density of the conductive materials in the semi-conductive matrix layer is increased due to compression of the soft semi-conductive layer, which results in reduction of the resistance (Rx); a first conductive layer (12) disposed on a first surface of the semi-conductive matrix layer; and a second conductive layer (13) disposed on a second surface of the semi-conductive matrix layer; (B) a first resistor (19) having one side connected to the first conductive layer and the other side connected to a power source; (C) a second resistor (21) having one side connected to the second conductive layer

Abstract: Provided are a retro-reflection product using water based resin and a fabrication method thereof. The retro-reflection product includes a glass bead layer attached on a film, an aluminum layer selectively deposited on the glass bead layer according to need, and a base layer for adhering leather, fabric, or urethane sheet. A water based color resin coating layer is primarily coated with water based polyurethane resin over a surface of the glass bead layer. A water based adhesive resin coating layer is secondarily coated with water based polyurethane resin on a surface of the water based color resin coating layer.

Abstract: An undergarment for men is formed with multiple layers of fabric materials attached together. A first fabric piece (10) is formed in a brief shape to have a front part (10c), a rear part (10d), a pair of side parts (10e) extending between the front and rear parts (10c, 10d), and a bottom part (10f) extending between a lower portion of the front part (10c) and a lower portion of the rear part (10e), the front part (10c) having a first elastic thread line (14) attached by stitching or sewing to a central area of the front, bottom, and rear parts (10c, 10f, 10e) to exert a suitable elastic force a genitalia region of the wearer. A second fabric piece (20) is attached externally to the first fabric piece (10), wherein the second fabric piece has a belt-like shape extending in a circumferential direction and covering a substantial portion of the first fabric piece (10) but not covering a central portion of the front part of the first fabric piece.

Abstract: A spark plug comprises: a spark plug housing; an axial core electrode disposed in a longitudinal direction in the spark plug housing; and a ground electrode having a terminal part spaced apart along the longitudinal direction from a distal end of the axial core electrode and disposed in a perpendicular relation with the axial core electrode, the terminal part having a circular through hole formed along an axis coaxial with the axial core electrode, the circular through hole having a tapered inner surface and including a plurality of spiral protrusions disposed on the tapered inner surface to induce a turbulent air flow in the combustion inflow.

Abstract: The present invention provides a method for manufacturing an organic semiconductor thin film by a wet process with a composite solution prepared by dissolving at least two organic semiconductor compounds in a mixed organic solvent including at least two organic solvents having different volatility and having different solubilities of the organic compounds at room temperature. Due to the differences in the evaporation speeds of the solvents and the solubilities of the organic compounds, the organic compounds are continuously deposited according to the composition of solvent that sequentially evaporates. Thus, the organic semiconductor thin film having a continuous multi-layer (non-boundary multi-layer) structure can be manufactured where different organic compounds coexist between the organic layers.

Abstract: A normal conducting current lead using Rutherford cables, in which one end thereof is connected to an external power supplier and the other end thereof is connected to a superconducting current lead connected to a superconducting power apparatus operating at ultralow temperatures. The normal conducting current lead includes an insulating body, which has a cylindrical shape or a polygonal prism shape and a plurality of slots radially formed from the center thereof, and a plurality of Rutherford cables, which are inserted and fitted into the slots of the insulating body and are radially arranged so that a density of current flowing through the cross-section of the current lead is uniformly distributed.