Abstract: A bearing gap measuring device can measure a gap of a bearing to judge whether the bearing is damaged. The bearing gap measuring device includes: a pressure generating device configured to selectively supply a positive pressure and a negative pressure, which have a certain pressure, to an interior of a cylinder; and a displacement measuring device penetrating a cylinder head and applying a force to pull or push a piston by a sequential generation of a positive pressure and a negative pressure in the cylinder. In particular, the displacement measuring device includes a probe rod to contact with an upper face of the piston such that the probe rod is moved in a longitudinal direction to measure a height change amount of the piston.

Abstract: A bearing gap measuring device can measure a gap of a bearing to judge whether the bearing is damaged. The bearing gap measuring device includes: a pressure generating device configured to selectively supply a positive pressure and a negative pressure, which have a certain pressure, to an interior of a cylinder; and a displacement measuring device penetrating a cylinder head and applying a force to pull or push a piston by a sequential generation of a positive pressure and a negative pressure in the cylinder. In particular, the displacement measuring device includes a probe rod to contact with an upper face of the piston such that the probe rod is moved in a longitudinal direction to measure a height change amount of the piston.

Abstract: A pressurization apparatus for preventing faulty formation of patterns of a tire includes a push part for pressing the upper surface of a green tire and fixing the green tire and configured to be separated at the center and located under an upper plate with closely contact with the upper plate; an upper plate formed on the upside of the push part; a press part being located under the upper plate and coupled with the external sides thereof; a pattern part formed to contact the inner surface of the press part and operated to slide and move up or down; and a support part placed under the green tire to contact with the lower surface of the green tire and to support the green tire.

Abstract: A Universal Serial Bus (USB) apparatus for USB communication is provided. The USB apparatus includes a Printed Circuit Board (PCB) including a circuit for communicating data with an external device according to a USB communication standard, a connector for connecting to a USB terminal of the external device, and a noise reduction circuit connected between an output terminal of the PCB and the connector for reducing noise of a data signal. The noise reduction circuit includes a common-mode filter for removing harmonic components generated between a ‘+’ data signal and a ‘?’ data signal and passing the ‘+’ data signal and the ‘?’ data signal, which operate in a differential mode.

Abstract: A multi-layer multi band antenna is provided. Because the antenna carrier has a structure stacked in a plurality of layers having different dielectric constants, the antenna maintains a small size yet has an improved radiation performance in a desired bandwidth.

Abstract: A multi-layer multi band antenna is provided. Because the antenna carrier has a structure stacked in a plurality of layers having different dielectric constants, the antenna maintains a small size yet has an improved radiation performance in a desired bandwidth.

Abstract: A Universal Serial Bus (USB) apparatus for USB communication is provided. The USB apparatus includes a Printed Circuit Board (PCB) including a circuit for communicating data with an external device according to a USB communication standard, a connector for connecting to a USB terminal of the external device, and a noise reduction circuit connected between an output terminal of the PCB and the connector for reducing noise of a data signal. The noise reduction circuit includes a common-mode filter for removing harmonic components generated between a ‘+’ data signal and a ‘?’ data signal and passing the ‘+’ data signal and the ‘?’ data signal, which operate in a differential mode.

Abstract: Disclosed is a high speed voltage controlled oscillator and method for generating an oscillation frequency comprising delay devices connected by a loop. Each of the delay devices comprises a first channel inverter transistor for receiving an output signal output from another first channel inverter transistor of a delay device just prior to said each of the delay devices; a second channel inverter transistor for receiving an output signal output from another second channel inverter transistor of the delay device just prior to said each of the delay devices; and a Complementary Metal Oxide Semiconductor (CMOS) switch disposed between the first channel inverter transistor and the second channel inverter transistor of said each of the delay devices, for receiving differentiated controlled signals and controlling electric current.