Patents Assigned to Coavis
  • Patent number: 11035373
    Abstract: Provided is a water pump including a supporting structure for an impeller having a lower manufacturing cost and having reduced noise and vibration characteristics compared to a conventional water pump including a supporting structure for an impeller. The water pump including a supporting structure for an impeller includes: a shaft; an impeller having the shaft inserted into a center of the impeller and rotating together with the shaft to discharge an introduced fluid; a core formed on an outer circumference of the shaft; a magnetic material formed on an outer circumference of the core and forming a magnetic field rotating the shaft connected to the core and the impeller; a pump housing the shaft, impeller and core; and a supporting member installed between an end of the shaft and the pump housing to support the shaft.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: June 15, 2021
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Joon Seup Kim
  • Patent number: 10995759
    Abstract: Provided is a water pump including a lower casing, an upper casing coupled to an upper side of the lower casing to form an impeller accommodating space therein by the coupling with the lower casing and having an inlet communicating with the impeller accommodating space and allowing a fluid to be introduced therethrough and an outlet allowing the fluid to be discharged therethrough, an impeller provided in the impeller accommodating space and including an upper plate and a lower plate arranged to be spaced apart from each other vertically and a plurality of blades arranged and coupled between the upper plate and the lower plate, and a rotor coupled to the impeller and rotated together with the impeller, wherein the upper casing has a spacing recess provided on an inner surface corresponding to an outer circumference of the upper plate of the impeller.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 4, 2021
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Byeung Jin Kim
  • Patent number: 10857706
    Abstract: Provided are an assembly type terminal for a fuel pump capable of decreasing a process additionally required at the time of injection-molding a flange using a separation type terminal according to the related art and preventing a defect of a product that may occur at the time of injection-molding the flange, and a method of manufacturing a fuel pump flange using the same. The assembly type terminal for a fuel pump includes: a plurality of power supply terminals; a plurality of coupling bodies 100 and 200 coupling one or more power supply terminals to each other; and a coupling member 300 formed in the coupling bodies and coupling the plurality of coupling bodies 100 and 200 to each other, wherein the plurality of coupling bodies are spaced apart from each other and are coupled to each other by the coupling member.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: December 8, 2020
    Assignee: COAVIS
    Inventors: Chaehoon Lim, Kusung Kwon, Heejin Yoon, Dongheon Mo
  • Patent number: 10794751
    Abstract: Provided is a fuel level sensing apparatus for a fuel tank for sensing a remaining fuel level of the fuel tank through a variation in a measured resistance value depending on a position of a wiper in contact with a resistance substrate. The resistance substrate includes a first segment part and a second segment part disposed to be spaced apart from each other. A resistance setting part of the second segment part is connected to positive electrode terminals, and a connecting part of the first segment part is connected to a negative electrode terminal by a negative electrode lead. A connection point of the negative electrode lead connected to the connecting part is formed between both ends of the connecting part in a length direction. A resistance deviation in a measured resistance value depending on a change in the position of the wiper may be reduced.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: October 6, 2020
    Assignee: COAVIS
    Inventors: Young Chang Kim, Joon Seop Kim
  • Patent number: 10773728
    Abstract: Provided are a signal processing system and a signal processing method for sensors of a vehicle. More particularly, the signal processing system includes: a vehicle sensor unit 100 including the plurality of sensors previously provided in the vehicle and transmitting sensing information acquired through the sensors; an arithmetic and control unit 200 receiving sensing information from the vehicle sensor unit 100, and comparing and analyzing the received sensing information to discriminate only normal sensing information from the sensing information and set and transmit the normal sensing information as output information; and a display unit 300 including a plurality of displays previously provided in the vehicle, transmitting the output information received from the arithmetic and control unit 200 to the matched display of the plurality of displays, and outputting the output information through the matched display of the plurality of displays.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: September 15, 2020
    Assignee: COAVIS
    Inventors: Young Sub Jang, In Seok Sohn
  • Patent number: 10634532
    Abstract: Provided are a system and a method for optimizing driving of an ultrasonic sensor. The system for optimizing driving of an ultrasonic sensor includes: an ultrasonic sensor unit provided on an inner bottom surface of a fuel tank for a vehicle and obtaining a time of flight (TOF) for calculating a distance from the inner bottom surface of the fuel tank to a fuel surface; and a central processing unit calculating liquid level information of the fuel tank using the TOF transferred from the ultrasonic sensor unit and controlling a driving voltage of the ultrasonic sensor unit using the liquid level information.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: April 28, 2020
    Assignee: COAVIS
    Inventors: Se Jin Kim, In Gon Kim, Jong Hyuk Yoon
  • Patent number: 10605645
    Abstract: Provided is a fuel tank for a vehicle in which a fuel measure bar provided in a vertical direction in a fuel storing body in which a fuel combusted in an engine is stored and capable of measuring a fuel amount using an ultrasonic wave includes a first fuel measure bar fixed to a bottom surface of the fuel storing body and a second fuel measuring bar easily coupled to the first fuel measuring bar to easily enter the fuel storing body and exit from the fuel storing body.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 31, 2020
    Assignee: COAVIS
    Inventors: In Gon Kim, Se Jin Kim, Jong Hyuk Yoon
  • Patent number: 10605644
    Abstract: Provided is a complementary apparatus for measuring a level of urea water includes an ultrasonic measurement unit installed inside a urea water tank to measure a level of urea water using an ultrasonic wave, an inductance measurement unit including a winding coil wound in a vertical direction inside the urea water tank and having a winding density varied toward one side, and measuring a level of urea water using inductance measured as a current is applied to the winding coil, a temperature measurement unit installed in the urea water tank and measuring a temperature, and a controller determining whether to operate the ultrasonic measurement unit or the inductance measurement unit according to the temperature measured by the temperature measurement unit or selectively outputting a level of urea water measured by the ultrasonic measurement unit and the inductance measurement unit.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 31, 2020
    Assignee: COAVIS
    Inventors: Dong Heon Mo, Jin Hwa Jung, In Seok Sohn, Hyun Tae Lee
  • Patent number: 10598538
    Abstract: Provided are a system and a method for measuring a liquid level of a vehicle fuel tank, and more particularly, to a system for measuring a liquid level of a vehicle fuel tank including an ultrasonic sensor unit provided on a bottom surface in the vehicle fuel tank to acquire measurement data for calculating a distance from the bottom surface in the fuel tank to a fuel surface and a central processing unit using the measurement data transmitted from the ultrasonic sensor unit by a preset number of times for a preset time to calculate liquid level information of the fuel tank.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: March 24, 2020
    Assignee: COAVIS
    Inventors: Se Jin Kim, In Gon Kim, Jong Hyuk Yoon
  • Patent number: 10598065
    Abstract: Provided is a urea solution pump module including: a flange portion coupled to cover an opened mounting hole of a urea solution tank; a pump disposed near an upper surface of the flange portion; a filter formed to surround the pump, disposed to be spaced apart from the pump, and coupled to the flange portion; an internal heater disposed between the pump and the filter and coupled to the flange portion; and a first fin having one side connected to the internal heater and the other side disposed near the pump. If the urea solution received in the urea solution tank is frozen, the pump and the urea solution frozen around the pump may be quickly and efficiently thawed.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: March 24, 2020
    Assignee: COAVIS
    Inventors: Tae Hoon Lee, Ji Ho Jung, Jong Hyuk Yoon, Yong Soo Jeon
  • Patent number: 10533888
    Abstract: Provided is a fuel pump module for measuring a height of fuel using an ultrasonic wave, and more particularly, a fuel pump module for measuring a height of fuel using an ultrasonic wave, where an ultrasonic wave sensor for measuring the height of the fuel contained in a fuel tank is integrally installed in the fuel pump module provided in the fuel tank.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: January 14, 2020
    Assignee: COAVIS
    Inventors: Jong Hyuk Yoon, Se Jin Kim, In Gon Kim
  • Patent number: 10498187
    Abstract: Provided is a brushless direct current (BLDC) motor applied to a fuel pump for a motor vehicle, and more particularly, a BLDC motor of a fuel pump for a motor vehicle in which an end of a shaft of a rotor is coupled to a stator side to be rotated such that a length of the shaft is reduced.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 3, 2019
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Jin Woo Han
  • Patent number: 10483883
    Abstract: Provided is driving control method of Brushless DC (BLDC) motor, including: a step of initial driving command input, initially inputting a driving command to the BLDC motor; a step of the first position alignment, compulsively aligning rotor of the BLDC motor at a predetermined position; a step of forced driving, compulsively driving the rotor of the BLDC motor compulsively aligned by accelerating the rotor of the BLDC motor; a step of feedback control, performing feedback control of the BLDC motor; a step of driving off, inputting a stop command to the BLDC motor; and a step of the second position alignment, compulsively aligning the rotor of the BLDC motor at the predetermined position again.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: November 19, 2019
    Assignee: COAVIS
    Inventors: Suk Min Yoon, Young Sub Jang
  • Patent number: 10447121
    Abstract: The present invention relates to a fuel pump for vehicle supplying power to a commutator and an armature through a brush to prevent the brush from shake, which comprises the brush, a spring mounted on a top of the brush, the commutator contacted to a bottom of the brush, a brush holder surrounding the brush and the spring, and a first hole formed for fuel flow at a front side of the brush holder in a rotational direction of the commutator based on the brush.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 15, 2019
    Assignee: COAVIS
    Inventors: Hyun Tae Lee, Gyu Sang Yu, In Seok Sohn
  • Patent number: 10436161
    Abstract: Provided is a strainer including: a filter paper filtering fuel and having a space part disposed therein; an inner rib disposed inside the filter paper; protruding parts protruding up and down from the inner rib to be disposed inside the filter paper; and a communicating pipe combined with the filter paper to communicate with the space part. The filter paper and the inner rib are partially folded up longitudinally. The folded portion is formed in a rounded form, and the upper and lower portions of the filter paper are formed not to contact each other at the folded portion. Widths of the protruding parts are each formed differently and distances between the protruding parts are each formed differently. The width and the distance are more narrowly formed at the portion at which the filter paper is folded than at the portion at which the filter paper is not folded.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: October 8, 2019
    Assignee: COAVIS
    Inventors: Jeong Sik Kim, Woo Keun Lee, Du Hyun Kim, Eun Ju Lee
  • Patent number: 10197432
    Abstract: Provided is a liquid level sensor for a fuel tank including: a case having a filled liquid filled therein and closed; a resistor substrate provided in the case and a wiper contacting the resistor substrate; and a damper provided in the case and absorbing a pressure change of an inner portion of the case. The liquid level sensor for a fuel tank is configured to absorb a pressure change of the inner portion of the case, thereby making it possible to prevent leakage of the filled liquid that may occur due to the pressure change of the inner portion of the case.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: February 5, 2019
    Assignee: COAVIS
    Inventors: Dong Heon Mo, Hae Seong Kim
  • Patent number: 10145341
    Abstract: Provided are a strainer and a fuel pump module having the same, and more particularly, a strainer capable of preventing filter paper from stopping since the filter paper contacts each other at a portion at which the strainer is folded, in the strainer connected to an inlet of a fuel pump or a fuel pump module to filter fuel sucked thereinto, and a fuel pump module having the same.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: December 4, 2018
    Assignee: COAVIS
    Inventors: Jeong Sik Kim, Woo Keun Lee, Du Hyun Kim, Eun Ju Lee
  • Patent number: 10119509
    Abstract: A multi-stage fuel pump includes a casing having a fuel intake formed on one side thereof and a fuel discharge port formed on the other side thereof, and a plurality of impellers provided within the casing, having a plurality of blades disposed on a circumferential surface in an outward direction of the circumferential surface and having blade chambers formed between the blades and penetrating through upper and lower surfaces of the impellers to allow fuel to be discharged and introduced to and from upper and lower sides of the blades, and formed in multiple stages, wherein fuel intaken through the fuel intake according to rotation of the impellers is discharged to the fuel discharge port through the blade chambers of the impellers, and the numbers of the blades of each of the impellers are different, thereby reducing blade passage frequency (BPF) noise generated according to rotation of the impellers.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: November 6, 2018
    Assignee: COAVIS
    Inventors: Gyu Sang Yu, Won Young Choi, In Seok Sohn
  • Patent number: 10020696
    Abstract: Provided is a DC motor for a fuel pump for a vehicle. The DC motor for a fuel pump for a vehicle includes: a housing whose inside is hollow; a stator coupled to the inside of the housing and having a first permanent magnet whose N pole is disposed inwardly in a radial direction and a second permanent magnet whose S pole is disposed inwardly in a radial direction, the first permanent magnet and the second permanent magnet being spaced apart from each other to face each other; and a rotor disposed on an inside of the stator while being spaced apart from the stator, in which a first gap g1 between the first permanent magnet and the rotor is different from a second gap g2 between the second permanent magnet and the rotor, whereby a torque ripple that is a fluctuation width of a cogging torque is reduced.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: July 10, 2018
    Assignee: COAVIS
    Inventors: Gyu Sang Yu, Hyun Tae Lee, Wan Sung Pae
  • Patent number: 9581473
    Abstract: The following disclosure relates to a flow rate measuring device and method capable of correcting a gradient. More particularly, the following disclosure relates to a flow rate measuring device and method capable of correcting a gradient that may measure a flow rate having a minimized measurement error by including a sensor unit provided on a bottom surface of an inner portion of a fuel tank in order to accurately measure a flow rate value remaining in the fuel tank to obtain distance information between the bottom surface of the fuel tank and an oil surface and gradient information of the fuel tank itself.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 28, 2017
    Assignee: COAVIS
    Inventors: Suk Min Yoon, Young Sub Jang, Se Jin Kim, In Gon Kim, In Seok Sohn