Patents by Inventor Guangqian Dai

Guangqian Dai 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).

  • Publication number: 20220377989
    Abstract: The present disclosure discloses a hand-push leaf suction machine with an automatic outage function for toppling which includes a housing provided with an air duct, a fan fixedly arranged in the housing, a dust collecting box, ground wheels arranged on two sides of the housing and supported on ground, auxiliary wheels arranged on two sides of the housing and supported on the ground, and a push handle arranged at a rear end of the housing.
    Type: Application
    Filed: May 15, 2020
    Publication date: December 1, 2022
    Inventor: Guangqian DAI
  • Publication number: 20160345494
    Abstract: The present invention relates to a cutting device, comprising a first blade and a blade holding mechanism making a circular motion relative to the first blade, wherein the blade holding mechanism is fitted with a second blade; wherein the first blade is made with cutting notches and wherein the second blade and/or the cutting notches are made with cutting planes. The cutting device described in the present invention is a simple and high-efficiency machine that is easy to operate, requires much less driving force and energy for the same cutting area, does not damage plants, makes a neat cutting section and produces cuttings that are easy to be collected.
    Type: Application
    Filed: November 20, 2014
    Publication date: December 1, 2016
    Inventor: Guangqian Dai