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Jeong-Whan
Jeong-Whan Kim, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090031998 | Air super charger - Disclosed herein is an air supercharger for vehicle engines. The air supercharger includes a cylindrical housing. Support ribs extend from the inner circumference of the housing to the center thereof. A shaft support pipe is provided at a predetermined position on the support ribs. A locking surface is provided on an upper end of the inner circumference of the housing. A stationary blade body is inserted into the housing and held between the locking surface and a stop surface of the housing. The stationary blade body includes support rims, stationary blades, and elastic parts. A rotating shaft is installed in the shaft support pipe. A rotary blade body is inserted into the stationary blade body and coupled to the rotating shaft. The rotary blade body includes a blade support pipe and rotary blades. Locking rings are provided on upper and lower ends of an outer circumference of the housing. | 02-05-2009 |
Jeong-Whan Lee, Chungiu-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100145654 | APPARATUS OF CHASING POSTURE OF MOVING MATERIAL OBJECT, METHOD OF CHASING POSTURE OF MOVING MATERIAL OBJECT, APPARATUS OF CHASING POSTURE OF TOOTHBRUSH AND METHOD OF CHASING POSTURE OF TOOTHBRUSH USING THE SAMELECTRIC TOOTHBRUSH AND METHOD FOR CONTROLLING THEREOF - An apparatus for tracking an posture of a moving object in a three-dimensional space having a z-axis facing a reference surface of the moving object, an x-axis perpendicular to the z-axis in a virtual vertical plane including the z-axis, and a y-axis perpendicular to the x-axis in a virtual horizontal plane including the x-axis is described. A reference surface direction determination unit detects which direction the reference surface is facing with the x-axis as an axis of rotation. The x-axis deviation determination unit detects how far an x-axis direction of the moving object is relatively deviated from a magnetic north direction. The determination unit determines the posture of the moving object based on how far the x-axis of the moving object is deviated and which direction the reference surface is facing in response to detection signals of the reference surface direction determination unit and the x-axis deviation determination unit. | 06-10-2010 |
Jeong-Whan Lee, Chungju-Shi KR
| Patent application number | Description | Published |
|---|---|---|
| 20100106336 | ELECTRIC TOOTHBRUSH AND METHOD FOR CONTROLLING THEREOF - An electric toothbrush is disclosed. The electric toothbrush according to some example embodiments includes a bristle-vibrating unit that vibrates toothbrush bristles to clean a side of teeth in contact with the toothbrush bristles, a bristle direction-sensing unit detecting a direction to which the toothbrush bristles are directed in an oral cavity and a control unit automatically controlling the bristle-vibrating unit in response to the detected direction such that the vibration intensity of the toothbrush bristles when an occlusal side is brushed is weaker than the vibration intensity when a buccal side or a lingual side is brushed. | 04-29-2010 |
Jeong-Whan Lee, Chungju-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100096538 | METHOD FOR MEASURING ANGULAR DISPLACEMENT USING OPTICAL FIBER AND METHOD FOR MANUFACTURING THE SAME - In a senor for measuring an angular displacement and a method for manufacturing the senor, the sensor includes an optical fiber and a detector. The optical sensor has a light source attached to a first end portion of the optical fiber for emitting light, and an exiting surface formed at a second end portion of the optical fiber. The detector has a photo sensor being attached to an end portion of the detector, for measuring a light's intensity. The exiting surface includes a first inclination surface being cut to have a predetermined angle along a first rotational direction of the optical fiber, and further includes a second inclination surface being cut to have a predetermined angle along a second rotational direction of the optical fiber. Therefore, manufacturing cost may be reduced and durability may be enhanced. | 04-22-2010 |
Jeong-Whan Lee, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20110141152 | DRIVING SYSTEM FOR BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME AND METHOD OF DRIVING THE SAME - A driving system for a backlight unit includes: a system unit outputting first and second dimming signals for driving the backlight unit; and an inverter unit driving the backlight unit with a 2-block scanning method using the first and second dimming signals received directly from the system unit. | 06-16-2011 |
Jeong-Whan Yoon, Aveiro PT
| Patent application number | Description | Published |
|---|---|---|
| 20110114227 | GRAIN REFINEMENT OF METALLIC COMPONENTS BY CONTROLLED STRAIN PATH CHANGE - Nowadays, the production of metallic parts, namely sheet metal, with high strength and formability, represents a big challenge for automotive, aerospace and assembling industries. The present invention deals with a new plastic deformation process that allows, by controlling the strain path change, the production of sheet metals with a grain size of 1-2 micron and, consequently, with a yield stress 3-4 times than the ones obtained with conventional processes, keeping the same formability. The process is easy for industrialization and its optimization requires only two fundamental parameters that characterize the ratio of thickness reduction, shear strain and amplitude in the change of strain path. | 05-19-2011 |