Patents by Inventor Jianhui Cheng

Jianhui Cheng 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).

  • False-brake prevention device
    Patent number: 9199660
    Abstract: A false-brake prevention device includes a wheel shaft, a positioning structure, a protruding pillar, a wheel hub rotatably disposed on the wheel shaft, a brake base connected to the wheel shaft, and a brake pedal pivotally connected to the brake base and having a brake lever for engaging with a brake tooth structure of the wheel hub. The positioning structure is formed on one of the brake pedal and the brake base, and has lock and release slots and an elastic portion formed therebetween. A first return region is connected to a transition region and formed on a side surface of the elastic portion with a gradually reducing height from the transition region to the lock slot. The protruding pillar is formed on the other one of the brake pedal and the brake base for pushing the elastic portion and for engaging with the lock slot or the release slot.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 1, 2015
    Assignee: Wonderland Nurserygoods Company Limited
    Inventor: Jianhui Cheng
  • FALSE-BRAKE PREVENTION DEVICE
    Publication number: 20130180805
    Abstract: A false-brake prevention device includes a wheel shaft, a positioning structure, a protruding pillar, a wheel hub rotatably disposed on the wheel shaft, a brake base connected to the wheel shaft, and a brake pedal pivotally connected to the brake base and having a brake lever for engaging with a brake tooth structure of the wheel hub. The positioning structure is formed on one of the brake pedal and the brake base, and has lock and release slots and an elastic portion formed therebetween. A first return region is connected to a transition region and formed on a side surface of the elastic portion with a gradually reducing height from the transition region to the lock slot. The protruding pillar is formed on the other one of the brake pedal and the brake base for pushing the elastic portion and for engaging with the lock slot or the release slot.
    Type: Application
    Filed: August 21, 2012
    Publication date: July 18, 2013
    Inventor: Jianhui Cheng