Patents by Inventor Quancheng LIU

Quancheng LIU 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).

  • Circumcision apparatus
    Patent number: 10702301
    Abstract: A circumcision apparatus includes a fixed support; a first through hole and a second through hole are machined on the fixed support along a same axial line; a knife rack shaft is penetrated through the first through hole; the first end of the knife rack shaft is connected with a locking mechanism to lock and position the knife rack shaft on the fixed support, the second end of the knife rack shaft is connected with a protective cover; the protective cover is extended to the exterior of the fixed support via the second through hole; the protective cover and the knife rack shaft are coaxial in detachable connection; a positioning sleeve in clearance fit with the protective cover is arranged at the second through hole; the positioning sleeve and the fixed support are in the detachable connection; and a space between the positioning sleeve and the protective cover is adaptive.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: July 7, 2020
    Inventors: Quancheng Liu, Fangxi Liu
  • CIRCUMCISION APPARATUS
    Publication number: 20180185047
    Abstract: A circumcision apparatus includes a fixed support; a first through hole and a second through hole are machined on the fixed support along a same axial line; a knife rack shaft is penetrated through the first through hole; the first end of the knife rack shaft is connected with a locking mechanism to lock and position the knife rack shaft on the fixed support, the second end of the knife rack shaft is connected with a protective cover; the protective cover is extended to the exterior of the fixed support via the second through hole; the protective cover and the knife rack shaft are coaxial in detachable connection; a positioning sleeve in clearance fit with the protective cover is arranged at the second through hole; the positioning sleeve and the fixed support are in the detachable connection; and a space between the positioning sleeve and the protective cover is adaptive.
    Type: Application
    Filed: June 3, 2016
    Publication date: July 5, 2018
    Inventors: Quancheng LIU, Fangxi LIU