Patents by Inventor Heng-Tai Chang

Heng-Tai Chang 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: 20240138520
    Abstract: A shoe insole includes an insole body for the stepping of the sole of one human foot. The insole body includes an upper insole layer having a top surface and an opposing bottom surface, a lower insole layer and a bulge. The upper insole layer is cold pressed to form bulges on the upper insole layer corresponding to different areas of the structure of the human foot. Then, the lower insole layer is bonded to the bottom surface of the upper insole layer, and then, perform cold pressing forming. Each bulge has a first convex surface and a first concave surface. The top surface of the upper insole layer integrally raised to form a first convex surface. The bottom surface of the upper insole layer integrally dented corresponding to the first convex surface to form a first concave surface.
    Type: Application
    Filed: January 10, 2024
    Publication date: May 2, 2024
    Inventor: Heng-Tai CHANG
  • Patent number: 11950655
    Abstract: A shoe insole and processing method for shoe insole are disclosed. The insole includes an insole body for the stepping of the sole of one human foot. The insole body includes an upper insole layer having a top surface and an opposing bottom surface, a lower insole layer and a bulge. The upper insole layer is cold pressed to form bulges on the upper insole layer corresponding to different areas of the structure of the human foot. Then, the lower insole layer is bonded to the bottom surface of the upper insole layer, and then, perform cold pressing forming. Each bulge has a first convex surface and a first concave surface. The top surface of the upper insole layer integrally raised to form a first convex surface. The bottom surface of the upper insole layer integrally dented corresponding to the first convex surface to form a first concave surface.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 9, 2024
    Assignee: DAH SHENG CHEMICAL INDUSTRY CO., LTD.
    Inventor: Heng-Tai Chang
  • Publication number: 20230067711
    Abstract: A laminating auxiliary jig includes a base having an accommodating recess, and a pressing plate pivotably attached to the base and having a positioning trough. When the pressing plate is opened, it is separated from the accommodating recess, which a first composite material is put into. When the pressing plate is closed, it is located in the accommodating recess and pressed on the first composite material, the positioning trough communicates with the accommodating recess, and at least one middle foam material is put into the positioning trough to be positioned and attached to the first composite material. When the pressing plate is opened again, a second composite material is put into the accommodating recess to be attached to the middle foam material. Therefore, the laminating auxiliary jig helps a user quickly complete laminating the multilayer composite material. The method of using the laminating auxiliary jig is also provided.
    Type: Application
    Filed: October 1, 2021
    Publication date: March 2, 2023
    Inventors: Heng-Tai CHANG, Yu-Che SHEN, Thi Bich Van CHUNG
  • Publication number: 20230068828
    Abstract: A heel cap manufacturing method includes the steps of: a) preparing a multilayer composite material; b) performing the first time of molding by thermal pressing to the multilayer composite material by a thermal pressing device to obtain a thermal pressed semi-product; c) taking out the thermal pressed semi-product from the thermal pressing device and fixing it to a heel cap mold; d) performing the second time of molding by cold pressing to the thermal pressed semi-product together with the heel cap mold in a cooling device to obtain a cooled semi-product; and e) demolding and rewarming the cooled semi-product to obtain a finished heel cap. The present invention uses the processing manner of molding twice by cold and thermal pressing to manufacture the structurally more complex heel cap, effectively lowering difficulty of the manufacturing process and raising production efficiency. A heel cap manufacturing equipment is also provided.
    Type: Application
    Filed: October 1, 2021
    Publication date: March 2, 2023
    Inventors: Heng-Tai CHANG, Yu-Che SHEN, Thi Bich Van CHUNG
  • Publication number: 20220312894
    Abstract: A shoe insole and processing method for shoe insole are disclosed. The insole includes an insole body for the stepping of the sole of one human foot. The insole body includes an upper insole layer having a top surface and an opposing bottom surface, a lower insole layer and a bulge. The upper insole layer is cold pressed to form bulges on the upper insole layer corresponding to different areas of the structure of the human foot. Then, the lower insole layer is bonded to the bottom surface of the upper insole layer, and then, perform cold pressing forming. Each bulge has a first convex surface and a first concave surface. The top surface of the upper insole layer integrally raised to form a first convex surface. The bottom surface of the upper insole layer integrally dented corresponding to the first convex surface to form a first concave surface.
    Type: Application
    Filed: May 20, 2021
    Publication date: October 6, 2022
    Inventor: Heng-Tai CHANG
  • Publication number: 20210321718
    Abstract: A shoe heel protector includes a sheet body including a heel portion and two wing portions connected to opposing left and right ends of the heel portion and facing each other, and a plurality of elastic bumps bilaterally symmetrically arranged on the inner circumferential surface of the sheet body to provide a stable elastic support effect on the heel, so as to achieve the effect of improving wearing comfort.
    Type: Application
    Filed: June 5, 2020
    Publication date: October 21, 2021
    Inventor: Heng-Tai CHANG
  • Publication number: 20110263728
    Abstract: A recycled latex foam material is prepared by mixing polyurethane with recycled waste latex grains to cause a polymerization reaction and then feeding the polymerized recycled waste latex foam grains and polyurethane mixture into a mold for molding into a finished product. The method of the invention is environmentally friendly and practical for making latex foam pads of different hardnesses and densities for different application purposes by using different grain sizes of recycled waste latex grains with polyurethane. The finished product has comfort wearing, breathing, anti-slip, anti-bacterial and cost-saving characteristics.
    Type: Application
    Filed: January 28, 2011
    Publication date: October 27, 2011
    Applicant: SIX-VICTOR LTD.
    Inventor: Heng-Tai CHANG
  • Publication number: 20060162078
    Abstract: An electric mattress comprises a main member made of an elastic material. A frame has a base, a plurality of shafts in the main member and a plurality of elastic members on the shafts. The shafts are rotated to flex and extend the main member. A driving device is connected to the shafts to drive the shafts for rotation respectively, and a control device is electrically connected to the driving device for operation. As a result, user has to operate the control device to adjust the slope of the main member.
    Type: Application
    Filed: January 24, 2005
    Publication date: July 27, 2006
    Inventor: Heng-Tai Chang
  • Publication number: 20060162087
    Abstract: A breathing mattress for bed includes a mattress body, which is prepared from a foam material and has a plurality of mounting holes, and a plurality of hollow elastic filler elements respectively mounted in the mounting holes of the mattress body for ventilation.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 27, 2006
    Inventor: Heng-Tai Chang
  • Publication number: 20060000115
    Abstract: A method of making an insole includes the steps of (a) providing a base sheet material having through holes, (b) immersing the base sheet material in a filling material for enabling the filling material to fill up the through holes, (c) baking the base sheet material to cure the filling material, (d) splitting the base sheet material to a desired thickness, (e) bonding a fabric layer to one side of the base sheet material, (f) cutting the base sheet material into semi-finished insole, (g) stamping the semi-finished insole into a finished insole where the filling material protrudes over the top and bottom sides of the base sheet material, and the fabric layer has raised portions supported on the protruded filling material corresponding to the through holes.
    Type: Application
    Filed: June 30, 2004
    Publication date: January 5, 2006
    Inventor: Heng-Tai Chang
  • Publication number: 20050177945
    Abstract: A pillow includes a pillowcase having a receiving space inside and a plurality of deformable resilient blocks disposed inside the receiving space. Each of the resilient blocks is made of a foam material, such as.
    Type: Application
    Filed: February 17, 2004
    Publication date: August 18, 2005
    Inventor: Heng-Tai Chang
  • Patent number: 6928678
    Abstract: A pillow includes a transparent, apertured pillowcase having a receiving space inside and a plurality of deformable resilient blocks disposed inside the receiving space. Each of the resilient blocks is made of a foam material, such as latex.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: August 16, 2005
    Inventor: Heng-Tai Chang