Patents by Inventor I-Jin Yang

I-Jin Yang 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).

  • Patent number: 9073528
    Abstract: Disclosed is brake system technology such as a modulator block and an electronic control brake system for vehicles having the same which suppresses residual frictional force generated due to contact between pads and a disc by moving a part of fluid at the wheel brake side to a residual frictional force control unit so as to retract pads from the disc, so that the hydraulic volume is reduced.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: July 7, 2015
    Assignee: MANDO CORPORATION
    Inventors: I Jin Yang, Hee Jun Kim
  • Patent number: 8998349
    Abstract: Disclosed are electronic control brake systems for vehicles which suppress residual frictional force generated due to contact between pads and a disc.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 7, 2015
    Assignee: Mando Corporation
    Inventors: Hee Jun Kim, I Jin Yang
  • Patent number: 8974010
    Abstract: The electric brake system for vehicles includes a pressure supplier connected to a reservoir through a hydraulic passage to receive the oil, the pressure supplier outputting a brake will of a driver as an electric signal through the pedal displacement sensor, when the driver pushes the brake pedal, to operate a motor and convert a rotational force of the motor into linear motion, a hydraulic control unit including a first circuit including at least one first vehicle wheel and a second circuit including at least one second vehicle wheel to receive a hydraulic pressure with a force generated by the pressure supplier and thereby perform braking, a blocking valve to control the hydraulic pressure from the master cylinder to a wheel cylinder disposed in each vehicle wheel, a simulation device connected to the master cylinder, to provide a reaction force response to the pedal effort of the brake pedal, and an electronic control unit to control the motor and the valves, based on pressure information and pedal displa
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 10, 2015
    Assignee: Mando Corporation
    Inventor: I Jin Yang
  • Patent number: 8833728
    Abstract: Disclosed is a solenoid valve for a brake system which improves an assembly structure of components configuring the valve to enhance durability and control performance of the valve. The solenoid valve for a brake system includes a seat housing installed at a bore of a modulator block and provided with a through hole formed therethrough, a valve seat installed at the through hole of the seat housing and provided with an orifice, a sleeve provided with a hollow and connected to the seat housing, a magnetic core, an armature installed at the sleeve, and a return spring installed in the sleeve, wherein the armature includes an upper armature formed of a magnetic material, and a lower armature formed of a non-magnetic material, wherein the through hole of the seat housing is provided with a guide region having a diameter corresponding to an outer diameter of the lower armature.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: September 16, 2014
    Assignee: Mando Corporation
    Inventors: Hyun Jun Kim, I Jin Yang, Yong Kap Kim, Dong Yo Ryu, Jong Young Park
  • Publication number: 20140238167
    Abstract: Disclosed herein is a nut screw conveying device including a nut and a screw to convert rotational movement into translational movement. In the nut screw conveying device, a plurality of different threads is spirally formed on an inner circumferential surface of the nut, and the screw is provided with a plurality of rotating media to be respectively engaged with the different threads.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicant: MANDO CORPORATION
    Inventors: Young-Song LEE, I-Jin YANG, Seong-Ho CHOI
  • Publication number: 20140117747
    Abstract: Disclosed herein is an electric brake system for a vehicle including a reservoir, an input rod, and a pedal displacement sensor to sense a displacement of a brake pedal. The electric brake system includes a pressure supply unit connected to the reservoir and a hydraulic channel and to output an electrical signal through the pedal displacement sensor, a hydraulic control unit provided with a first circuit and a second circuit, a shut-off valve to control the hydraulic pressure transferred to a wheel cylinder, a switching valve connected to a channel connecting the pressure supply unit to the hydraulic control unit, a compliance unit installed in a channel connected to the shut-off valve and the switching valve and including a compliance chamber, a piston and an elastic member, a simulator connected to the master cylinder to provide reaction force, and an electronic control unit to control the motor and the valves.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Applicant: MANDO CORPORATION
    Inventors: I Jin YANG, Seong Ho Choi
  • Publication number: 20140117749
    Abstract: Disclosed herein is an electric brake system for a vehicle including a reservoir, a master cylinder, an input rod, and a pedal displacement sensor. The electric brake system includes a pressure supply unit to receive oil and to output an electrical signal through the pedal displacement sensor, a hydraulic control unit to perform braking of a wheel, first and second switching valves connected to a channel connecting the pressure supply unit to the hydraulic control unit, a simulator connected to the master cylinder, and an electronic control unit to control the motor and the valves. The pressure supply unit includes a pressure chamber, a hydraulic piston arranged in the pressure chamber, a hydraulic spring to elastically support the hydraulic piston, the motor to generate rotational force, and a ball-screw member to convert rotational motion of the motor into rectilinear motion. The hydraulic piston is connected to the screw.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Applicant: MANDO CORPORATION
    Inventors: I Jin YANG, Seong Ho CHOI
  • Publication number: 20140067222
    Abstract: Disclosed herein are a brake control apparatus and methods for controlling of a brake. The brake control apparatus includes a wheel pressure selector to select one of different wheel pressure modes for a current pedal stroke produced in a brake system during driving, a wheel pressure storage unit to store information on different levels of wheel pressure corresponding to the different wheel pressure modes, a first controller to receive a wheel pressure mode signal corresponding to one of the wheel pressure modes selected through the wheel pressure selector and to receive corresponding wheel pressure information from the wheel pressure storage unit, and a first wheel pressure adjuster to supply the corresponding wheel pressure information to brake system to adjust a current wheel pressure for the current pedal stroke produced in the brake system to the corresponding wheel pressure information stored in the wheel pressure storage unit.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 6, 2014
    Applicant: MANDO CORPORATION
    Inventors: Gyung-Hun SIM, I Jin YANG, Kyu Woong CHOI
  • Publication number: 20130299288
    Abstract: Disclosed herein is an electronic disc brake. The electronic disc brake includes a carrier on which a pair of pad plates are mounted, a caliper housing, which is slidably installed on the carrier and is provided with a cylinder having a piston mounted therein, a pressure device installed within the cylinder, the pressure device converting rotational motion into rectilinear motion to press and release the piston, the pressure device having an output key which protrudes by penetrating a rear wall of the caliper housing, a motor mounted on an outer surface of the caliper housing to generate drive force, a reducer coupled with a rotary shaft of the motor to amplify the drive force, and a coupling interposed between the reducer and the pressure device to transmit the amplified drive force to the pressure device, wherein the motor, the reducer, and the pressure device are coaxially connected in series.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 14, 2013
    Inventors: Dong Yo Ryu, I Jin Yang, Seong Ho Choi, Jong Gu Son
  • Publication number: 20130277156
    Abstract: Disclosed is brake system technology such as a modulator block and an electronic control brake system for vehicles having the same which suppresses residual frictional force generated due to contact between pads and a disc by moving a part of fluid at the wheel brake side to a residual frictional force control unit so as to retract pads from the disc, so that the hydraulic volume is reduced.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 24, 2013
    Inventors: I Jin Yang, Hee Jun Kim
  • Publication number: 20130270894
    Abstract: There is provided an initial flow increasing module. The initial flow increasing module is connected with an electronic stability control (ESC) system having a first hydraulic channel and a second hydraulic channel each for controlling a liquid pressure transmitted to two wheels, and includes a hydraulic circuit that includes a pressure source in which oil is stored so as to increase a braking initial flow and a flow control valve connected with the pressure source so as to control a flow of oil transmitted to a wheel brake provided in each wheel from the pressure source.
    Type: Application
    Filed: April 12, 2013
    Publication date: October 17, 2013
    Inventors: Hee Jun Kim, I Jin Yang
  • Publication number: 20130264152
    Abstract: Disclosed are electronic control brake systems for vehicles which suppress residual frictional force generated due to contact between pads and a disc.
    Type: Application
    Filed: March 8, 2013
    Publication date: October 10, 2013
    Inventors: Hee Jun Kim, I Jin Yang
  • Publication number: 20130257142
    Abstract: Disclosed are electronic control brake systems for vehicles which suppress residual frictional force generated due to contact between pads and a disc.
    Type: Application
    Filed: March 8, 2013
    Publication date: October 3, 2013
    Inventors: Hee Jun Kim, I Jin Yang
  • Publication number: 20130241276
    Abstract: Disclosed is an integrated electronic hydraulic brake system including an actuator having a master cylinder and a pedal simulator, an electronic stability control (ESC), and a hydraulic power unit (HPU) which are configured as a single unit. The integrated electronic hydraulic brake system may include an integrated hydraulic control unit and a power source unit, wherein the power source unit is separately provided to isolate the operational noise, and the integrated hydraulic control unit and the power source unit are connected to each other via an external pipe.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Inventors: Yong Kap Kim, I Jin Yang, Seong Ho Choi
  • Publication number: 20130239566
    Abstract: An integrated electronic hydraulic brake system provided with an actuator including a master cylinder and a pedal simulator, an electronic stability control (ESC) and a hydraulic power unit (HPU) in a single unit.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Inventors: Hyun Jun KIM, I Jin Yang, Seong Ho Choi
  • Publication number: 20130241272
    Abstract: Disclosed is an integrated electronic hydraulic brake system including an actuator having a master cylinder and a pedal simulator, electronic stability control (ESC), and hydraulic power unit (HPU) which are configured as a single unit.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Inventors: Hyun Jun KIM, I Jin Yang, Seong Ho Choi
  • Publication number: 20130233656
    Abstract: Disclosed is an electronic control brake system for vehicles which suppresses residual frictional force generated due to contact between pads and a disc. The electronic control brake system for vehicles includes a master cylinder, wheel brakes, each of which includes a caliper device including a disc and advancing and retracting a pair of pads pressing the disc to exhibit braking force by brake hydraulic pressure transmitted from the master cylinder, plural NO and NC type solenoid valves, low pressure accumulators, pumps and a motor pressurizing a fluid stored in the low pressure accumulators to discharge the fluid to the wheel brakes or the master cylinder, and a section between the plural solenoid valves and the low pressure accumulator is are formed as a closed circuit section, and the pump is driven to move a part of the fluid in the closed circuit section to the outlet of the pump.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 12, 2013
    Inventors: Hee Jun Kim, I Jin Yang
  • Publication number: 20130214587
    Abstract: The electric brake system for vehicles includes a pressure supplier connected to a reservoir through a hydraulic passage to receive the oil, the pressure supplier outputting a brake will of a driver as an electric signal through the pedal displacement sensor, when the driver puts the brake pedal, to operate a motor and convert a rotational force of the motor into linear motion, a hydraulic control unit including a first circuit including at least one first vehicle wheel and a second circuit including at least one second vehicle wheel to receive a hydraulic pressure with a force generated by the pressure supplier and thereby perform braking, a blocking valve to control the hydraulic pressure from the master cylinder to a wheel cylinder disposed in each vehicle wheel, a simulation device connected to the master cylinder, to provide a reaction force response to the pedal effort of the brake pedal, and an electronic control unit to control the motor and the valves, based on pressure information and pedal displace
    Type: Application
    Filed: February 8, 2013
    Publication date: August 22, 2013
    Inventor: I Jin Yang
  • Patent number: 8434831
    Abstract: A vehicle brake device includes an input shaft coupled to a brake pedal, a pedal operation detector, a pedal simulator coupled to the input shaft in a control housing, a master cylinder, a control piston, a control chamber, and a hydraulic pressure supply, wherein the pedal simulator includes a pedal simulator piston, a pressing member, a simulator piston provided in the pedal simulator piston, and a push rod which is accommodated in the pressing member while being spaced apart from a bottom wall of a guide groove by passing through the pedal simulator piston and the simulator piston from the control piston to the input shaft, and wherein a diameter of the master cylinder is greater than a diameter of the simulator piston, and a diameter of the control piston is greater than a diameter of the master cylinder.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: May 7, 2013
    Assignee: Mando Corporation
    Inventor: I Jin Yang
  • Patent number: 8328298
    Abstract: Disclosed herein is an electro-hydraulic brake system. The electro-hydraulic brake system includes a master cylinder to transmit brake oil, a high-pressure accumulator to transmit brake oil independently of the master cylinder, first and second circuits connected respectively to the master cylinder, at least one first wheel to be braked by the first circuit, and at least one second wheel to be braked by the second circuit. The first circuit is connected to the high-pressure accumulator, to control the first wheel. The second circuit is connected to the first circuit, to control the second wheel.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: December 11, 2012
    Assignee: Mando Corporation
    Inventors: I Jin Yang, Seong Ho Choi