Patents Assigned to Coavis
  • 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
  • Patent number: 9576715
    Abstract: Provided is a device for magnetizing a ring-shaped magnet for a brushless direct current (BLDC) motor, including: a rotor having a ring-shaped magnet installed on an outer peripheral surface of a rotor core; and a plurality of magnetizing yokes disposed so as to be spaced apart from each other by a predetermined interval while facing an outer peripheral surface of the ring-shaped magnet, magnetizing the ring-shaped magnet to form even-numbered unit magnets, and magnetizing the ring-shaped magnet only in regions except for one end and the other end of the unit magnets.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: February 21, 2017
    Assignee: COAVIS
    Inventors: Seong Hwan Moon, Wan Sung Pae, In Seok Sohn
  • Patent number: 9546666
    Abstract: Provided is an impeller for a fuel pump of a vehicle capable of decreasing a magnitude of high frequency fluid noise due to high speed rotation of the impeller by upper and lower blades of impeller blades positioned between upper and lower casings of the fuel pump and coupled to a shaft of a driving motor to deliver a fuel by rotational force so as to have asymmetrical angles based on the center of a thickness of an impeller body in sucking the fuel from a fuel tank and supplying the fuel to an engine of an internal combustion engine.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: January 17, 2017
    Assignee: COAVIS
    Inventors: Bong Ju Lee, Hyun Tae Lee, Seong Hwan Moon, Mun Sik Jeon, In Seok Sohn
  • Patent number: 9441585
    Abstract: Provided is an apparatus for fixing a reservoir body assembly of a fuel pump module into a fuel tank. The apparatus includes: a fixed retainer fixed into the fuel tank to be integrated with the fuel tank; and a moving coupled retainer coupled with the fixed retainer in a state in which a reservoir body assembly pumping fuel in the fuel tank is disposed at an assembling location with the fixed retainer to mount the reservoir body assembly so as to fix the reservoir body assembly.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: September 13, 2016
    Assignee: COAVIS
    Inventors: Jong Keun Lim, Joon Sup Kim, Chan Heum Yoon, Tae Hoon Lee, Yong Hwan Choi
  • Patent number: 9151257
    Abstract: Provided is a fuel pump module for supplying diesel fuel. The fuel pump module in accordance with exemplary embodiments of the present invention is configured to include a flange assembly fixed to an inlet of a fuel tank and a reservoir body assembly disposed in the fuel tank, wherein the reservoir body assembly includes: a filter that removes foreign objects included in the diesel fuel; a fuel pump that forcibly circulates the diesel fuel passing through the filter to a diesel engine; and a pump connection return passage that supplies fuel toward a diesel engine through a supply line of fuel but supplies the diesel fuel that is returned without being consumed by the diesel engine between the filter and the fuel pump to supply the fuel to the fuel pump without passing through the filter.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: October 6, 2015
    Assignee: COAVIS
    Inventors: Munsik Jeon, Chanheum Yoon, Dong-Heon Mo
  • Patent number: 9109554
    Abstract: Provided is a fuel pump module for a vehicle includes: a flange assembly positioned at a top portion of a fuel tank; a reservoir body assembly positioned at an inner bottom portion of the fuel tank; and a guide rod connecting the flange assembly and the reservoir body assembly to each other, wherein the reservoir body assembly includes: a fuel pump forcibly supplying fuel in the fuel tank to an engine; and a filter having a column shape in which it includes a hollow having the fuel pump positioned therein, installed in a form in which it is inserted into a case forming an appearance of the reservoir body assembly and having the fuel pump installed therein, and installed to allow the fuel before passing through the fuel pump to pass therethrough, thereby filtering foreign materials included in the fuel.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 18, 2015
    Assignee: COAVIS
    Inventors: Chanheum Yoon, Wokpyeong Bang
  • Patent number: 9080537
    Abstract: Provided is an in-tank filter, which is a component of a fuel pump module positioned in a fuel tank of a vehicle, etc., to supply fuel to an engine. The in-tank filter includes: a filter media filtering foreign materials; an upper container made of a synthetic resin material and having a filter media insertion space therein, the filter media insertion space having a filter media inserted thereinto; a lower container made of a synthetic resin material and coupled to the upper container to block a lower portion of the upper container; and a deformation prevention reinforcing ring having a container insertion hole formed therein so as to be closely adhered to an outer side of the upper container when the upper container is inserted thereinto and preventing the upper container inserted into the container insertion hole from expanding.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: July 14, 2015
    Assignee: COAVIS
    Inventors: Youngchol Choi, Hayoung Cho, Jinsik Hwang, Chanheum Yoon, Jongman Lee, Younghoon Kim, Haisung Lee
  • Patent number: 9074607
    Abstract: Provided is an impeller of a fuel pump for a vehicle. More particularly, an impeller of a fuel pump for a vehicle, which can improve delivery pressure and a delivery speed of fuel by modifying a shape of an impeller blade that is provided between an upper casing and a lower casing of a fuel pump and is joined to a rotational shaft of a driving motor to deliver fuel by using rotational force at the time of suctioning fuel from a fuel tank and supplying fuel to an engine of an internal combustion engine.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: July 7, 2015
    Assignee: COAVIS
    Inventor: Hyuntae Lee
  • Patent number: 9021871
    Abstract: Provided is a fuel amount detection device for a vehicle positioned in a fuel tank of the vehicle to detect a remaining fuel amount. In the fuel amount detection device for a vehicle, a resistor pattern and a conductive pattern formed on a resistor substrate and spaced apart from each other are electrically connected to each other by a conductive material coated on a conductive film pressed by a contactor to prevent abrasion of the resistor pattern formed on the resistor substrate, thereby making it possible to improve durability. In addition, since the resistor pattern is sealed by the conductive film, it does not contact fuel, such that corrosion of the resistor pattern is prevented, thereby making it possible to accurately detect a fuel amount.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: May 5, 2015
    Assignee: Coavis
    Inventors: KyungHwan Kim, Jeongsik Kim
  • Patent number: 8979475
    Abstract: Provided is a turbine fuel pump for a vehicle. More particularly, provided is a turbine fuel pump for a vehicle that can improve efficiency of the fuel pump and solve pressure instability caused by collision of fuel by forming a separate independent channel in a lower casing, an impeller, and an upper casing where channels of fuel are formed at the time of suctioning fuel from the fuel tank and supplying fuel to an engine of an internal combustion engine.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: March 17, 2015
    Assignee: Coavis
    Inventor: Hyuntae Lee
  • Patent number: 8919326
    Abstract: A fuel pump module, in which an in-tank filter and a fuel pump are installed at respective locations and held by a pump retainer, thereby allowing fuel to easily flow in the fuel pump module and realizing smallness and improved filtering performance of the fuel pump module.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: December 30, 2014
    Assignee: Coavis
    Inventors: Jong Keun Lim, In Seok Sohn, Ohk Sung Kim, Joon Seup Kim
  • Publication number: 20140345719
    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: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Applicant: COAVIS
    Inventors: Jeong Sik KIM, Woo Keun LEE, Du Hyun KIM, Eun Ju LEE
  • Patent number: 8820350
    Abstract: Provided is a fuel pump module in which a portion of fuel transmitted from a fuel pump provided in a reservoir or fuel returned from an engine is supplied to a first jet and a second jet and a portion of the fuel is supplied from a first jet tower to a second jet tower through a connection tube connecting the first jet tower and the second jet tower to each other when the returned fuel passes through the first jet and the second jet and is then jetted to each of the first jet tower and the second jet tower to fill an inner portion of the second jet tower with the fuel, such that the fuel in a second space part of a fuel tank is rapidly transmitted, thereby making it possible to stably supply the fuel to the engine.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: September 2, 2014
    Assignee: Coavis
    Inventors: Joonseup Kim, Wookeun Lee
  • Patent number: 8789515
    Abstract: Provided is a reservoir for a fuel tank not including a pump and capable of allowing fuel to be smoothly transferred by effectively blocking a solidification material when solidification occurs in the fuel in a low temperature environment.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: July 29, 2014
    Assignee: Coavis
    Inventors: Kusung Kwon, Chanheum Yoon
  • Patent number: 8763589
    Abstract: A fuel pump module including: a reservoir installed in a fuel tank, the reservoir being charged with a predetermined amount of fuel; a fuel pump installed in the reservoir and pumping the fuel contained in the reservoir to an internal combustion engine; a jet pump injecting a fuel jet into the reservoir to thereby introduce the fuel stored in the fuel tank into the reservoir; a guide tube installed on the jet pump and guiding both the fuel jet and the fuel introduced from the fuel tank along with the fuel jet into the reservoir; and a filter unit partitioning the interior of the reservoir into a fuel suction area, into which the fuel is introduced by the fuel pump, and a fuel charging area, which is charged with the fuel from the fuel tank, thus preventing foreign substances from being introduced from the fuel charging area into the fuel suction area.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 1, 2014
    Assignee: COAVIS
    Inventors: JongKeun Lim, Inseok Sohn, Kyuseob Shin, Joonseup Kim, Munsik Jeon
  • Patent number: 8764419
    Abstract: Provided is a fuel pump module for a vehicle in which a fuel pump, which is a vibration body, is physically coupled to an intank filter, a primary filter, and the like, which are other components of the fuel pump module, to have increased mass, such that unique harmonic acceleration of the fuel pump is reduced, a unique vibration area of the fuel pump or the fuel pump module is changed, and harmonic vibration of the fuel pump is thus positioned at the unique vibration area of the fuel pump or the fuel pump module, thereby making it possible to remove noise generated in a fuel tank due to abnormal vibration of the fuel pump module.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: July 1, 2014
    Assignee: COAVIS
    Inventors: Mun-sik Jeon, Chan-heum Yoon, Hoi-hyun Kim, Hyoung-il Kim, Seung-min Lim
  • Publication number: 20140116398
    Abstract: Provided is a fuel pump module capable of preventing the static electricity from being accumulated on a fuel pump module, and thus preventing firing and explosion, by forming lines from a pump mounting portion on which a fuel pump is mounted to a inlet port of a flange assembly with electrically conductive material and connecting them to a connector formed on the flange assembly with a ground lead line, so that the static electricity generated by the friction caused by the flow of the fuel is discharged to the outside of the fuel pump module, i.e., the chassis of a vehicle.
    Type: Application
    Filed: August 15, 2013
    Publication date: May 1, 2014
    Applicant: COAVIS
    Inventors: Mun Sik JEON, Jin Sik HWANG, Joon Seup KIM