Patents Assigned to MARSHAL INDUSTRIAL CORP.
  • Method of manufacturing a composite rim
    Patent number: 11813809
    Abstract: A method of manufacturing a composite rim includes following steps of: disposing a composite material on an outer surface of an air bag to form a semi-formed rim, wherein the air bag is a completely closed annular tube without any through opening on the outer surface and contains a thermal expansion material thereinside; disposing the semi-formed rim in a mold; and heating the thermal expansion material so that the thermal expansion material expands and inflates the air bag and the semi-formed rim is then solidified.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: November 14, 2023
    Assignee: MARSHAL INDUSTRIAL CORP.
    Inventor: Ming-Jen Tsai
  • Marked wheel rim and method for manufacturing the same
    Patent number: 11230141
    Abstract: A marked wheel rim is provided, including: a rim body and a mark. The rim body includes an outer surface. The mark is embedded on the outer surface and includes an outer peripheral edge adjacent to the rim body. The outer peripheral edge is non-protrusive beyond the outer surface. A method for manufacturing the marked wheel rim is further provided.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: January 25, 2022
    Assignee: MARSHAL INDUSTRIAL CORP.
    Inventor: Ming-Jen Tsai
  • Method of manufacturing a carbon fiber wheel rim
    Patent number: 10792843
    Abstract: A method of manufacturing a carbon fiber wheel rim is provided, including flowing steps of: preparing a core ring, including a core material which is disintegrable and annular; continuously obliquely winding at least one first dry carbon yarn around the core ring, to form a first semifinished rim; placing the first semifinished rim in a mold, and performing vacuuming, resin injection and thermoforming, to form a second semifinished rim; removing the second semifinished rim out of the mold, and disintegrating and removing the core material.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: October 6, 2020
    Assignee: MARSHAL INDUSTRIAL CORP.
    Inventor: Ming-Jen Tsai