Patents by Inventor Duanjun Ma

Duanjun Ma 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).

  • Patent number: 10927594
    Abstract: A vehicle door for a railway vehicle and a railway vehicle includes the vehicle door include a first door skin, a second door skin and a foaming material forming a laminated structure, the foaming material being filled between the first and second door skins, wherein the first door skin has at least one folded edge portion, and the second door skin has a first bent edge portion tightly clamped in the folded edge portion in a position corresponding to each of the folded edge portions. Since during the fixing of the first and second door skins, at least part thereof is realized by a folding and clamping technique, adhesion failure risk between the door skins and a frame body is effectively lowered during use, the reliability of the fixed connection between the two door skins is improved, and the vehicle door weight and the production cost are reduced during manufacture.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: February 23, 2021
    Assignee: IFE-VICTALL Railway Vehicle Door Systems (Qingdao) Co., Ltd.
    Inventors: Duanjun Ma, Changyu Xie, Werner Hoefler
  • Publication number: 20200270938
    Abstract: A vehicle door for a railway vehicle and a railway vehicle includes the vehicle door include a first door skin, a second door skin and a foaming material forming a laminated structure, the foaming material being filled between the first and second door skins, wherein the first door skin has at least one folded edge portion, and the second door skin has a first bent edge portion tightly clamped in the folded edge portion in a position corresponding to each of the folded edge portions. Since during the fixing of the first and second door skins, at least part thereof is realized by a folding and clamping technique, adhesion failure risk between the door skins and a frame body is effectively lowered during use, the reliability of the fixed connection between the two door skins is improved, and the vehicle door weight and the production cost are reduced during manufacture.
    Type: Application
    Filed: December 15, 2016
    Publication date: August 27, 2020
    Applicant: IFE-VICTALL Railway Vehicle Door Systems (Qingdao) Co., Ltd.
    Inventors: Duanjun MA, Changyu XIE, Werner HOEFLER
  • Patent number: 9278802
    Abstract: The present invention discloses a detachable container comprising a base, side panels, corner posts and a roof panel, wherein the side panels are detachably connected to the base and to the roof panel, the corner posts are located between adjacent side panels and the side panels are detachably connected to the corner posts, respectively. A connection is employed for connecting the side panels with the base, the corner posts and the roof panel of the detachable container according to the present invention. Therefore, in the process of returning empty containers, each of the containers can be detached and form a whole piece, so as to reduce the space occupied. In addition, a modularized design may be employed for each component of the detachable container, so as to achieve universality of components of the container. Furthermore, this detachable container also has the advantages of convenient assembly, simple structure, etc.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: March 8, 2016
    Assignees: CIMC VEHICLES (GROUP) CO., LTD., QINGDAO CIMC REEFER TRAILER CO., LTD., CHINA INTERNATIONAL MARINE CONTAINERS (GROUP) LTD.
    Inventors: Tianhua Huang, Xiaoyi Wang, Renyong Xu, Duanjun Ma, Zhengguo Gao, Xuri Gao, Dongfeng Zhao
  • Publication number: 20140326719
    Abstract: The present invention discloses a detachable container comprising a base, side panels, corner posts and a roof panel, wherein the side panels are detachably connected to the base and to the roof panel, the corner posts are located between adjacent side panels and the side panels are detachably connected to the corner posts, respectively. A connection is employed for connecting the side panels with the base, the corner posts and the roof panel of the detachable container according to the present invention. Therefore, in the process of returning empty containers, each of the containers can be detached and form a whole piece, so as to reduce the space occupied. In addition, a modularized design may be employed for each component of the detachable container, so as to achieve universality of components of the container. Furthermore, this detachable container also has the advantages of convenient assembly, simple structure, etc.
    Type: Application
    Filed: August 20, 2012
    Publication date: November 6, 2014
    Applicants: CIMC VEHICLES (GROUP) CO., LTD., CHINA INTERNATIONAL MARINE CONTAINERS (GROUP) LTD., QINGDAO CIMC REEFER TRAILER CO., LTD.
    Inventors: Tianhua Huang, Xiaoyi Wang, Renyong Xu, Duanjun Ma, Zhengguo Gao, Xuri Gao, Dongfeng Zhao
  • Publication number: 20100258558
    Abstract: A streamline container for a van, comprises a base frame, two side panels and a front end panel mounted on the base frame via floor bearers, and a roof sheet mounted on the two side panels and the front end panel via roof bows. At the outside of the roof bow, there is provided a streamline angle-wrapping component protruding outwards for shunting the airflow. The angle-wrapping component is smoothly and transitionally connected with the roof bow. In the present invention, due to the streamline angle-wrapping component, it is possible to effectively shunt the airflow, significantly decrease the wind resistance during the running of the van and help to reduce the energy consumption of the van.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 14, 2010
    Inventors: T.H. Huang, Robert Wang, Guohao Huang, Duanjun Ma