Patents by Inventor DINGFU TANG

DINGFU TANG 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: 10760873
    Abstract: The present disclosure relates to the field of air rifles, and particularly to a gear-type air rifle gear cock structure, including a air cylinder, a gear cock controller, a rack, and a rack reset spring, the gear cock controller is fixedly connected with the air cylinder, and the rack is arranged between the air cylinder and the gear cock controller; the air cylinder includes a air cylinder body, a piston, and a magazine, the air cylinder body has a hollow structure with an air chamber inside, the piston is arranged in the air chamber inside the air cylinder body, the magazine communicates with the air chamber through an outlet pipe; two ends of the rack are a piston fixing end and a spring fixing end respectively, the piston fixing end is connected with the piston through a lug arranged at the piston fixing end, the spring fixing end is connected with the rack reset spring, two ends of the rack reset spring are respectively fixed on the rack and the air cylinder.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: September 1, 2020
    Assignee: XISICO USA, INC
    Inventors: Wei Sun, Yecheng Wu, Xiaoqiang Shen, Guohua Jin, Dingfu Tang, Ye Sun, Xiaoping Ji
  • Publication number: 20200224996
    Abstract: The present disclosure relates to the field of air rifles, and particularly to a gear-type air rifle gear cock structure, including a air cylinder, a gear cock controller, a rack, and a rack reset spring, the gear cock controller is fixedly connected with the air cylinder, and the rack is arranged between the air cylinder and the gear cock controller; the air cylinder includes a air cylinder body, a piston, and a magazine, the air cylinder body has a hollow structure with an air chamber inside, the piston is arranged in the air chamber inside the air cylinder body, the magazine communicates with the air chamber through an outlet pipe; two ends of the rack are a piston fixing end and a spring fixing end respectively, the piston fixing end is connected with the piston through a lug arranged at the piston fixing end, the spring fixing end is connected with the rack reset spring, two ends of the rack reset spring are respectively fixed on the rack and the air cylinder.
    Type: Application
    Filed: December 29, 2017
    Publication date: July 16, 2020
    Applicant: XISICO USA, INC.
    Inventors: WEI SUN, YECHENG WU, XIAOQIANG SHEN, GUOHUA JIN, DINGFU TANG, YE SUN, XIAOPING JI