Patents by Inventor LIANG-HUI YEH

LIANG-HUI YEH 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: 20240123662
    Abstract: An injection molding system includes a supplying unit configured to supply a flowable mixture; an injection unit communicable with the supplying unit, wherein the injection unit includes an outlet configured to discharge the flowable mixture; a molding device configured to receive the flowable mixture from the outlet and includes a mold cavity and a feeding port communicable with the mold cavity and engageable with the outlet; and a supporting device disposed between the injection unit and the molding device and configured to facilitate an engagement of the injection unit and the molding device. The supporting device includes a first element connected to the injection unit and a second element disposed on the molding device. The second element includes a slot configured to receive a protruding portion of the first element, the protruding portion of the first element is slidable within and along the slot of the second element.
    Type: Application
    Filed: August 16, 2023
    Publication date: April 18, 2024
    Inventors: CHING-HAO CHEN, LIANG-HUI YEH
  • Publication number: 20240051204
    Abstract: A molding device includes a mold cavity defined by an upper mold, a lower mold and a middle mold being moveably attached to the lower mold; a position control mechanism configured to move the middle mold; and a gas discharging mechanism disposed adjacent to the mold cavity and including a gas conduit and a slit jointly defined by the upper mold and the lower mold when the molding device is closed, the slit is in communication with the mold cavity and the gas conduit. A molding method includes injecting a material into a mold cavity to form an article in the mold cavity; discharging at least a portion of a gas out of the mold cavity through a slit of a gas discharging mechanism adjacent to the mold cavity after the article is formed; disengaging a upper mold from a lower mold; and detaching the article from a middle mold.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 15, 2024
    Inventors: CHING-HAO CHEN, LIANG-HUI YEH
  • Publication number: 20240017456
    Abstract: An injection molding system and method are disclosed. The injection molding system includes a molding device and injector. The molding device defines a mold cavity and includes an inlet portion in communication with the mold cavity. The injector includes a discharging channel. An end portion of the inlet portion and an end portion of the discharging channel have non-planar end surfaces respectively, which are engageable with each other.
    Type: Application
    Filed: July 15, 2022
    Publication date: January 18, 2024
    Inventors: CHING-HAO CHEN, LIANG-HUI YEH
  • Patent number: 11865802
    Abstract: A main technical feature of a method for molding and forming a flip-flop and a mold thereof provided by the invention is that when a polymer raw material is filled into a mold chamber space of the mold, the filled raw material is preferentially flowed in a direction of a strap area space used to mold a V-shaped strap portion of the flip-flop to ensure that the slender V-shaped strap portion of the flip-flop can be integrally formed.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: January 9, 2024
    Assignee: OTRAJET INC.
    Inventors: Ching-Hao Chen, Liang-Hui Yeh
  • Patent number: 11858228
    Abstract: A molding device and a molding method are disclosed. The molding device includes an upper mold, a lower mold and a middle mold. The lower mold is disposed below the upper mold. The middle mold is disposed between the upper mold and the lower mold. The middle mold is moveably attached to the lower mold through a position control mechanism.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: January 2, 2024
    Assignee: KING STEEL MACHINERY CO., LTD.
    Inventors: Ching-Hao Chen, Liang-Hui Yeh
  • Patent number: 11806908
    Abstract: An extruding system includes a melting unit configured to convey a polymeric material, a mixing unit configured to mix the polymeric material with a blowing agent to form a mixture, an injection unit configured to inject the mixture, a first flow control element disposed between the melting unit and the mixing unit, and a second flow control element disposed between the mixing unit and the injection unit. A method of extruding includes conveying a polymeric material from a melting unit to a mixing unit, conveying a blowing agent into the mixing unit, mixing the polymeric material with the blowing agent to form a mixture, conveying the mixture from the mixing unit to an injection unit, and discharging the mixture from the injection unit, wherein flow of the polymeric material is controlled by a first flow control element, and flow of the mixture is controlled by a second flow control element.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: November 7, 2023
    Assignee: OTRAJET INC.
    Inventors: Fa-Shen Chen, Liang-Hui Yeh
  • Patent number: 11780129
    Abstract: A molding method includes providing a molding device, wherein the molding device includes a first mold and a second mold corresponding to the first mold; moving the first mold towards the second mold to form a first mold cavity; supplying a gas to the first mold cavity; injecting a material into the first mold cavity; and moving the first mold away from the second mold to form a second mold cavity and discharge at least a portion of the gas out of the molding device, wherein a first volume of the first mold cavity is substantially less than a second volume of the second mold cavity.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: October 10, 2023
    Assignee: KING STEEL MACHINERY CO., LTD.
    Inventors: Liang-Hui Yeh, Ching-Hao Chen, Yi-Chung Lee
  • Publication number: 20230311378
    Abstract: An injection-molding system includes an extruding system configured to produce a mixture; a discharging channel communicable with the extruding system and including an outlet configured to discharge the mixture; and molding devices configured to receive the mixture. Each of the molding devices includes a hollow space, and a feeding port communicable with the hollow space and engageable with the outlet. An injection-molding method includes providing an extruding system configured to produce a mixture, a discharging channel including an outlet, and first and second molding devices; engaging the outlet with the first molding device; injecting the mixture into the first molding device; disengaging the outlet from the first molding device; moving the discharging channel away from the first molding device and toward the second molding device; engaging the outlet with the second molding device; injecting the mixture into the second molding device; and disengaging the outlet from the second molding device.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventors: CHING-HAO CHEN, LIANG-HUI YEH
  • Patent number: 11766812
    Abstract: An injection molding system includes an extruding system. The extruding system includes a mixing unit configured to receive the polymeric material from the melting unit and configured to mix a polymeric material with a blowing agent and to form a mixture, wherein the mixing unit includes a mixing rotor disposed in a hollow mixing cartridge, and a ratio of a shortest distance between an inner sidewall of the hollow mixing cartridge and the mixing rotor to a diameter of the mixing rotor is in a range of 1:1500 to 1:4500. The injection molding system further includes a discharging channel communicable with the extruding system, a molding device configured to receive the mixture from the discharging channel, and a supporting device configured to facilitate an engagement of the discharging channel and the molding device, the supporting device includes a first element protrudes from the extruding system and a second element disposed on the molding device.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: September 26, 2023
    Assignee: KING STEEL MACHINERY CO., LTD.
    Inventors: Liang-Hui Yeh, Ching-Hao Chen
  • Patent number: 11731324
    Abstract: A molding device and an injection molding method thereof are provided. The molding device includes a first mold, a second mold and a sealing ring. The first mold includes a first body and at least one slide. The at least one slide is movably and detachably disposed on the first body, and has an undercut. The injection molding method includes operations of: engaging the first mold with the second mold of the molding device; filling a mold cavity defined by the first mold and the second mold with a gas, wherein the gas is blocked by the sealing ring disposed between the first mold and the second mold; injecting a molding material into the mold cavity; and opening the first mold and the second mold of the molding device.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: August 22, 2023
    Assignee: KING STEEL MACHINERY CO., LTD.
    Inventors: Fa-Shen Chen, Yi-Chung Lee, Liang-Hui Yeh, Ching-Hao Chen
  • Patent number: 11717996
    Abstract: A molding method includes providing a molding device, wherein the molding device includes a mold cavity, a feeding port in communication with the mold cavity, and a junction point in connection with the mold cavity; engaging an outlet of an injector to the feeding port; injecting a molding material including a blowing agent into the mold cavity from the feeding port by the injector; and injecting a gas into the mold cavity through the junction point to increase a pressure inside the mold cavity to a predetermined pressure for maintaining the blowing agent in a supercritical state.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: August 8, 2023
    Assignee: KING STEEL MACHINERY CO., LTD.
    Inventors: Yi-Chung Lee, Liang-Hui Yeh, Ching-Hao Chen
  • Patent number: 11712826
    Abstract: An injection-molding system includes an extruding system configured to produce a mixture; a discharging channel communicable with the extruding system and including an outlet configured to discharge the mixture; and molding devices configured to receive the mixture. Each of the molding devices includes a hollow space, and a feeding port communicable with the hollow space and engageable with the outlet. An injection-molding method includes providing an extruding system configured to produce a mixture, a discharging channel including an outlet, and first and second molding devices; engaging the outlet with the first molding device; injecting the mixture into the first molding device; disengaging the outlet from the first molding device; moving the discharging channel away from the first molding device and toward the second molding device; engaging the outlet with the second molding device; injecting the mixture into the second molding device; and disengaging the outlet from the second molding device.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: August 1, 2023
    Inventors: Ching-Hao Chen, Liang-Hui Yeh
  • Publication number: 20230202130
    Abstract: A main technical feature of a method for molding and forming a flip-flop and a mold thereof provided by the invention is that when a polymer raw material is filled into a mold chamber space of the mold, the filled raw material is preferentially flowed in a direction of a strap area space used to mold a V-shaped strap portion of the flip-flop to ensure that the slender V-shaped strap portion of the flip-flop can be integrally formed.
    Type: Application
    Filed: February 27, 2023
    Publication date: June 29, 2023
    Inventors: Ching-Hao CHEN, Liang-Hui YEH
  • Publication number: 20230144539
    Abstract: A main technical feature of a method for molding and forming a flip-flop and a mold thereof provided by the invention is that when a polymer raw material is filled into a mold chamber space of the mold, the filled raw material is preferentially flowed in a direction of a strap area space used to mold a V-shaped strap portion of the flip-flop to ensure that the slender V-shaped strap portion of the flip-flop can be integrally formed.
    Type: Application
    Filed: December 9, 2021
    Publication date: May 11, 2023
    Inventors: Ching-Hao CHEN, Liang-Hui YEH
  • Patent number: 11628606
    Abstract: An injection-molding method includes providing an extruding system configured to produce a mixture, a first discharging channel including a first outlet, a second discharging channel including a second outlet, and a molding device including a space and first and second feeding ports communicable with the space and respectively engageable with the first and second outlets; engaging the first outlet with the first feeding port; engaging the second outlet with the second feeding port; injecting the mixture through the first outlet and the first feeding port; and injecting the mixture through the second outlet and the second feeding port.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: April 18, 2023
    Assignee: KING STEEL MACHINERY CO., LTD.
    Inventors: Liang-Hui Yeh, Ching-Hao Chen
  • Publication number: 20230062429
    Abstract: An article includes a foamed member including a polymeric material, and a core embedded in the foamed member, the core includes a first surface, a second surface and a sidewall, the foamed member covers at least a portion of the first surface, and covers the entire sidewall and the entire second surface. A method of manufacturing an article includes providing a molding device including a first mold and a second mold, the first mold includes a supporting member protruded from an inner wall. The method further includes disposing a core on the supporting member; disposing the second mold over the first mold to form a mold cavity, the core is disposed within the mold cavity; injecting a first material into the mold cavity; and foaming the first material to form a first foamed member, wherein at least a portion of the first foamed member is in contact with the core.
    Type: Application
    Filed: June 2, 2022
    Publication date: March 2, 2023
    Applicant: OTRAJET INC.
    Inventors: CHING-HAO CHEN, LIANG-HUI YEH, TING-WEI CHEN
  • Publication number: 20230059719
    Abstract: A molding device and an injection molding method thereof are provided. The molding device includes a first mold, a second mold and a sealing ring. The first mold includes a first body and at least one slide. The at least one slide is movably and detachably disposed on the first body, and has an undercut. The injection molding method includes operations of: engaging the first mold with the second mold of the molding device; filling a mold cavity defined by the first mold and the second mold with a gas, wherein the gas is blocked by the sealing ring disposed between the first mold and the second mold; injecting a molding material into the mold cavity; and opening the first mold and the second mold of the molding device.
    Type: Application
    Filed: June 2, 2022
    Publication date: February 23, 2023
    Inventors: FA-SHEN CHEN, YI-CHUNG LEE, LIANG-HUI YEH, CHING-HAO CHEN
  • Publication number: 20220227086
    Abstract: An injection molding method includes providing a molding device including a first mold, a second mold over the first mold and a first mold cavity defined by the first mold and the second mold; injecting a first material into the first mold cavity; forming a first layer from the first material; replacing the second mold by a third mold, injecting a second material into a second mold cavity defined by the first mold and the third mold; and forming a second layer from the second material, wherein the second layer at least partially contacts the first layer. The first material is same as the second material.
    Type: Application
    Filed: April 7, 2022
    Publication date: July 21, 2022
    Inventors: LIANG-HUI YEH, CHING-HAO CHEN
  • Publication number: 20220143880
    Abstract: An injection molding system includes an extruding system. The extruding system includes a mixing unit configured to receive the polymeric material from the melting unit and configured to mix a polymeric material with a blowing agent and to form a mixture, wherein the mixing unit includes a mixing rotor disposed in a hollow mixing cartridge, and a ratio of a shortest distance between an inner sidewall of the hollow mixing cartridge and the mixing rotor to a diameter of the mixing rotor is in a range of 1:1500 to 1:4500. The injection molding system further includes a discharging channel communicable with the extruding system, a molding device configured to receive the mixture from the discharging channel, and a supporting device configured to facilitate an engagement of the discharging channel and the molding device, the supporting device includes a first element protrudes from the extruding system and a second element disposed on the molding device.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: LIANG-HUI YEH, CHING-HAO CHEN
  • Publication number: 20220097266
    Abstract: A molding method includes providing a molding device, wherein the molding device includes a mold cavity, a feeding port in communication with the mold cavity, and a junction point in connection with the mold cavity; engaging an outlet of an injector to the feeding port; injecting a molding material including a blowing agent into the mold cavity from the feeding port by the injector; and injecting a gas into the mold cavity through the junction point to increase a pressure inside the mold cavity to a predetermined pressure for maintaining the blowing agent in a supercritical state.
    Type: Application
    Filed: May 25, 2021
    Publication date: March 31, 2022
    Inventors: YI-CHUNG LEE, LIANG-HUI YEH, CHING-HAO CHEN