Patents by Inventor Jianming Chai

Jianming Chai 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).

  • Method for producing brake drum and a brake drum
    Patent number: 9016443
    Abstract: The present invention discloses a method for producing brake drum, wherein three different metallic materials are used for the three-layer construction; and two layers made of different molten metallic materials are cast based upon the prefabricated steel shell (with steel or gray iron for the structural layer and the Mo-containing, abrasion-resistant alloy cast iron for the braking friction layer) so that atoms from these two adjacent but different metallic layers inter-diffuse across the interface to form a solid fusant or an inter-metallic compound, thereby generating a very strong metallurgical bond. The present invention also provides a brake drum, comprising a brake drum shell, a structural layer inside the brake drum shell, and a friction layer inside the brake drum structural layer and for braking.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 28, 2015
    Assignee: Jiaxing Stone Wheel Co., Ltd
    Inventors: Jianrong Zhang, Qiangsheng Lin, Jianming Chai, Xinsheng Wu, Zhikun Zhou
  • METHOD FOR PRODUCING BRAKE DRUM AND A BRAKE DRUM
    Publication number: 20140034433
    Abstract: The present invention discloses a method for producing brake drum, wherein three different metallic materials are used for the three-layer construction; and two layers made of different molten metallic materials are cast based upon the prefabricated steel shell (with steel or gray iron for the structural layer and the Mo-containing, abrasion-resistant alloy cast iron for the braking friction layer) so that atoms from these two adjacent but different metallic layers inter-diffuse across the interface to form a solid fusant or an inter-metallic compound, thereby generating a very strong metallurgical bond. The present invention also provides a brake drum, comprising a brake drum shell, a structural layer inside the brake drum shell, and a friction layer inside the brake drum structural layer and for braking.
    Type: Application
    Filed: July 24, 2013
    Publication date: February 6, 2014
    Applicant: JIAXING STONE WHEEL CO., LTD.
    Inventors: Jianrong Zhang, Qiangsheng Lin, Jianming Chai, Xinsheng Wu