Patents by Inventor Chang-Bok Ko

Chang-Bok Ko has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140076652
    Abstract: An electric bicycle having an enhanced fixing structure of an electronic control unit, the electrical bicycle having an electronic control unit built in an a center frame along with a generator in a state of the electronic control unit is directly fixed at an upper portion of the generator, the electronic control unit is effectively be protected, as the fixing structure of the electronic control unit is simplified.
    Type: Application
    Filed: November 21, 2012
    Publication date: March 20, 2014
    Applicant: MANDO CORPORATION
    Inventors: Jeong Rae KIM, Chang Bok KO
  • Publication number: 20140053792
    Abstract: A fluidized bed heat exchange apparatus of a flue gas heat recovery type for producing high temperature water. The fluidized bed heat exchange apparatus passes a waste heat of a combustion flue gas containing a high temperature water vapor emitted from a combustion apparatus subsequently through a water fluidized bed and a heat medium fluidized bed such that a hot water at a saturation temperature of a wet air produced from a latent heat of the combustion flue gas at the water fluidized bed is again heated at the heat medium fluidized bed which does not have a vapor condensation phenomenon, thereby producing a hot water at a temperature higher than the saturation temperature of the wet air.
    Type: Application
    Filed: January 4, 2013
    Publication date: February 27, 2014
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Sang-Il Park, Kyoung-Bin Choi, Chang-Bok Ko
  • Patent number: 8528928
    Abstract: A folding type bicycle including a front frame provided with a front wheel and a handle, a center frame provided with pedals and a saddle, a rear frame provided with a rear wheel, a hinge device to enable the front frame, the center frame and the rear frame to pivot about one another, to be foldable with respect to one another, the hinge device comprising a front hinge member provided at the front frame, a center hinge member provided at the center frame, and a rear hinge member provided at the rear frame, and a hinge shaft configured to support a front hub, which is provided at a center of the front hinge member, a center hub, which is provided at a center of the center hinge member, and a rear hub, which is provided at a center of the rear hinge member, the hinge shaft passing through the front hub, the center hub and the rear hub, wherein the hinge shaft enables the supporting on at least two positions that are spaced apart from each other in a longitudinal direction of the hinge shaft.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 10, 2013
    Assignee: Mando Corporation
    Inventors: Jeong Rae Kim, Chang Bok Ko
  • Publication number: 20130055710
    Abstract: A booster assembly includes a booster provided at an engine room partitioned from a passenger compartment by a partition plate, a master cylinder disposed outwardly of a front side of the front cell, and fastening members to simultaneously mount the booster and master cylinder to the vehicle. Each fastening member includes a tube extending through the booster and having a front portion extending through a flange of the master cylinder, nuts fastened to respective front portions of the tubes, to fasten the master cylinder to the booster, through-bolts extending through respective tubes and the partition plate, to be mounted to the front portions of respective tubes, and a non-circular coupler formed at a rear portion of each tube, to prevent the tube from rotating when the corresponding nut is fastened to the tube. The rear cell is provided with a hole having a shape mating with the non-circular coupler.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 7, 2013
    Applicant: MANDO CORPORATION
    Inventors: Sung Je LEE, Young Jun SON, Chang Bok KO
  • Publication number: 20120234640
    Abstract: Disclosed is a motor driven type electric parking brake system. The parking brake system includes a drum that is rotated along with a wheel, first and second brake shoes installed in the drum to apply brake force to the drum, an operating lever that supports the two brake shoes and pushes the two brake shoes against an inner surface of the drum when a pivoting lever is pulled, a motor to generate drive power to drive the pivoting lever, a cycloid speed reducer connected to a rotating shaft of the motor to amplify the drive power, a spindle member rotatably connected to the speed reducer and having a male screw portion, and a nut member having a female screw portion reciprocally screwed to the male screw portion. The nut member is moved in a longitudinal direction of the spindle member and supports an end of the pivoting lever.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 20, 2012
    Inventors: Yu Don Jung, Chang Bok Ko
  • Patent number: 8181693
    Abstract: A self-cleaning, shell and tube type heat exchanger using a solid particle-water supply system. The heat exchanger includes solid particle supplying means for storing and supplying solid particles to be used in cleaning the heat exchanger tubes, and water supply means for fluidizing the solid particles stored in the solid particle supplying means so as to supply the solid particles into a mixed fluid discharging means, or for directly supplying water to the mixed fluid discharging means. The mixed fluid discharging means sucks the supplied solid particles and water, and sprays the supplied solid particles and water as a mixed fluid from above the vertical heat transfer tube arrangement such that inside surface of the heat transfer tubes can be cleaned. Separating means separates the mixed fluid used in cleaning the heat transfer tubes into solid particles and water, using a gravitational separation method.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: May 22, 2012
    Assignee: Korea Institute of Energy Research
    Inventors: Sang-Il Park, Kyong-Bin Choi, Chang-Bok Ko
  • Publication number: 20120070788
    Abstract: Disclosed is an eccentric jet type low NOX oxyfuel burner for gaseous fuel, which freely controls the shape of a flame and a combustion characteristic by using an eccentric injection nozzle. The disclosed oxyfuel burner reduces an optimum mixture rate forming area in comparison with a conventional coaxial-injection, and enlarges a thin fuel area and an excessive fuel area so that partial generation of a flame with a high temperature is restricted. Therefore, an amount of generated nitrogen oxide can be minimized and the stability of a flame can be significantly improved. Particularly, the oxyfuel burner combines a fuel nozzle and an oxygen combustion nozzle having different diameters so as to use them so that it is very simple and practical to design and manufacture the oxyfuel burner.
    Type: Application
    Filed: September 20, 2010
    Publication date: March 22, 2012
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Dong-Soon Noh, Eun-Kyung Lee, Chang-Bok Ko
  • Publication number: 20110259004
    Abstract: Disclosed is a brake actuator unit capable of improving the pedal feeling. The brake actuator unit includes a housing, a master cylinder connected to one end of the housing and provided therein with first and second pistons arranged in parallel to each other, an operating fluid reservoir coupled to an upper portion of the master cylinder to store operating fluid, a simulator accommodated in the master cylinder to provide repulsive force of a pedal, an input shaft moving back and forth according to an operation of the pedal, a control plunger slidably moving back and forth together with the input shaft, first and second output shafts positioned corresponding to first and second pistons to move back and forth together with the control plunger, and a pedal displacement sensor connected to the input shaft.
    Type: Application
    Filed: April 22, 2011
    Publication date: October 27, 2011
    Inventors: Seung Hyup BAE, Hong Ki Kim, Chang Bok Ko
  • Publication number: 20110132703
    Abstract: Disclosed is a hybrid brake system to perform a braking operation for a vehicle by generating hydraulic pressure in a master cylinder. The hybrid brake system includes an input shaft, a pedal simulator connected to the input shaft, a master cylinder provided therein with first and second pistons, an oil supply part supplying oil to the pedal simulator and the master cylinder, a power piston connected to the first piston, and a first chamber formed between the power piston and an inner surface of the master cylinder. The pedal simulator includes a simulation housing, a simulation rod provided at one end of the simulation housing, a second chamber formed at a lateral side of the first chamber to receive the simulation rod, and a boosting part communicated with the second chamber to generate the repulsive force as the brake pedal is pressed.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 9, 2011
    Inventors: Hong Ki Kim, Chang Bok Ko, Seung Hyup Bae
  • Publication number: 20110126534
    Abstract: Disclosed is a hybrid brake system equipped with a pedal simulator having a parallel structure. The hybrid brake system includes an input shaft connected to a brake pedal, a pedal simulator provided therein with a control plunger connected with the input shaft, a master cylinder communicating with the pedal simulator and provided therein with first and second pistons, an oil supply part supplying oil to the pedal simulator and the master cylinder, and a boosting part communicating with the pedal simulator and forming repulsive force when the brake pedal is stepped on.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 2, 2011
    Inventors: Chang Bok KO, Hong Ki Kim, Seung Hyup Bae
  • Publication number: 20110108377
    Abstract: Disclosed is a hydraulic active booster capable of easily adjusting the structure of a simulator. The simulator of the hydraulic active booster includes a simulator housing having a first receiving part for receiving a control plunger, a second receiving part for receiving a part of a first piston into which the control plunger is inserted, and a third receiving part for receiving a simulator piston. The third receiving part is separated from the first and second receiving parts.
    Type: Application
    Filed: November 10, 2010
    Publication date: May 12, 2011
    Inventors: Seung Hyup BAE, Chang Bok KO
  • Publication number: 20090095445
    Abstract: A self-cleaning, shell and tube type heat exchanger using a solid particle-water supply system. The heat exchanger includes solid particle supplying means for storing and supplying solid particles to be used in cleaning the heat exchanger tubes, and water supply means for fluidizing the solid particles stored in the solid particle supplying means so as to supply the solid particles into a mixed fluid discharging means, or for directly supplying water to the mixed fluid discharging means. The mixed fluid discharging means sucks the supplied solid particles and water, and sprays the supplied solid particles and water as a mixed fluid from above the vertical heat transfer tube arrangement such that inside surface of the heat transfer tubes can be cleaned. Separating means separates the mixed fluid used in cleaning the heat transfer tubes into solid particles and water, using a gravitational separation method.
    Type: Application
    Filed: November 29, 2006
    Publication date: April 16, 2009
    Applicant: Korea Institute of Energy Research
    Inventors: Sang-IL Park, Kyong-Bin Choi, Chang-Bok Ko
  • Patent number: 6102490
    Abstract: Disclosed is a braking system of an automobile, which can produce and store an electric power by means of the energy generated when the automobile is braked, thereby increasing efficiency in energy use, and simultaneously which can perform an anti-lock braking function and a traction control function. In the braking system, a master cylinder generates a hydraulic pressure when the brake pedal is pressed. A variably exhausting pump unit performs a pumping operation by the hydraulic pressure from the master cylinder. A control section senses a traveling state of the automobile and controls so that a proper braking force is applied to a wheel of the automobile. A flow control valve providing the variably exhausting pump unit with the braking force. A generating section generates electricity by means of a bypassed hydraulic pressure according to the order of the control section.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: August 15, 2000
    Assignee: Mando Machinery Corporation
    Inventor: Chang-Bok Ko