Patents by Inventor Guang Qiao

Guang Qiao 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).

  • Method for producing a gear worm which is located in particular on an armature shaft, and such a gear worm
    Patent number: 11904381
    Abstract: The invention relates to a method for producing a gear worm (12) which is located in particular on an armature shaft (14) of an electromotive drive unit (10), wherein firstly a worm gear (20) having screw flanks (22) axially opposite one another on a longitudinal axis (18) is formed by means of a rolling tool, and subsequently a groove structure (24) which is concentric about the longitudinal axis (18) is formed on the screw flanks (22) by means of an additional process step. The invention also relates to a gear worm (12) produced according to the method according to the invention, and to a transmission drive unit (10) containing such a gear worm (12).
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: February 20, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Jie Bao, Bernhard De Graaff, Daniel Cettier, Guang Qiao, Holger Thoene, Otmar Hertwig, Volker Hertweck
  • METHOD FOR PRODUCING A GEAR WORM WHICH IS LOCATED IN PARTICULAR ON AN ARMATURE SHAFT, AND SUCH A GEAR WORM
    Publication number: 20220055092
    Abstract: The invention relates to a method for producing a gear worm (12) which is located in particular on an armature shaft (14) of an electromotive drive unit (10), wherein firstly a worm gear (20) having screw flanks (22) axially opposite one another on a longitudinal axis (18) is formed by means of a rolling tool, and subsequently a groove structure (24) which is concentric about the longitudinal axis (18) is formed on the screw flanks (22) by means of an additional process step. The invention also relates to a gear worm (12) produced according to the method according to the invention, and to a transmission drive unit (10) containing such a gear worm (12).
    Type: Application
    Filed: October 4, 2019
    Publication date: February 24, 2022
    Inventors: Jie Bao, Bernhard De Graaff, Daniel Cettier, Guang Qiao, Holger Thoene, Otmar Hertwig, Volker Hertweck