Patents by Inventor Ronghua Xiao

Ronghua Xiao 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).

  • Chainless transmission mechanism for bicycles
    Patent number: 6695333
    Abstract: The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: February 24, 2004
    Assignee: Guangzhou Motors Group Company
    Inventors: Yongqiang Huang, Jinhong Zhang, Yaocai Ou, Weihua Ruan, Shaofang Wu, Ronghua Xiao
  • Chainless transmission mechanism for bicycles
    Publication number: 20020130483
    Abstract: The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.
    Type: Application
    Filed: March 12, 2002
    Publication date: September 19, 2002
    Inventors: Yongqiang Huang, Jinhong Zhang, Yaocai Ou, Weihua Ruan, Shaofang Wu, Ronghua Xiao
  • Ear irrigation device
    Patent number: D1006210
    Type: Grant
    Filed: June 29, 2023
    Date of Patent: November 28, 2023
    Assignee: Shenzhen Gaodi Digital Co., Ltd.
    Inventor: Ronghua Xiao