Patents by Inventor PENGJUN LIU

PENGJUN 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).

  • Patent number: 12012169
    Abstract: A foldable rotary arm structure and device for a bicycle. The foldable rotary arm structure includes a rotary wheel and a rotary arm. The rotary wheel is coaxial with a transverse tube or surrounds the transverse tube. The rotary arm is in steering connection with the rotary wheel or a supporting base, such that the rotary arm is attached to the transverse tube when folded, thereby reducing the space of the transverse tube occupied in a radial direction. A flywheel for use in a balancing device of a bicycle or a motor-assisted bicycle or an amusement device is provided. In the rotary arm, individual batteries or multistage batteries are arranged in a single layer in the radial direction and are stacked in multiple stages in the axial direction. When the rotary arm is unfolded and rotated, the angular momentum is increased or the torque is balanced.
    Type: Grant
    Filed: July 25, 2023
    Date of Patent: June 18, 2024
    Inventor: Pengjun Liu
  • Publication number: 20230365214
    Abstract: A foldable rotary arm structure and device for a bicycle. The foldable rotary arm structure includes a rotary wheel and a rotary arm. The rotary wheel is coaxial with a transverse tube or surrounds the transverse tube. The rotary arm is in steering connection with the rotary wheel or a supporting base, such that the rotary arm is attached to the transverse tube when folded, thereby reducing the space of the transverse tube occupied in a radial direction. A flywheel for use in a balancing device of a bicycle or a motor-assisted bicycle or an amusement device is provided. In the rotary arm, individual batteries or multistage batteries are arranged in a single layer in the radial direction and are stacked in multiple stages in the axial direction. When the rotary arm is unfolded and rotated, the angular momentum is increased or the torque is balanced.
    Type: Application
    Filed: July 25, 2023
    Publication date: November 16, 2023
    Inventor: Pengjun LIU
  • Publication number: 20230336052
    Abstract: A balance structure for connecting crossbars of a bicycle, the balance structure comprising a bicycle frame body, crossbars, and a driving device (700), wherein the driving device (700) comprises a rotor (500) and a stator (400); and a first crossbar (100) is connected to a second crossbar (101) or a frame by means of the stator (400), a housing of the stator (400), or a central shaft (710) of the driving device (700).
    Type: Application
    Filed: June 21, 2023
    Publication date: October 19, 2023
    Inventor: Pengjun LIU
  • Patent number: 10258935
    Abstract: The present invention provides a high-flux polyamide composite membrane, which includes a composite membrane body, wherein the composite membrane body includes a non-woven fabric, a porous supporting layer and a polyamide layer which are successively arranged; and the polyamide layer is prepared by a polyamine solution and a poly-acyl chloride solution through an interface polymerization reaction, wherein the polyamine solution contains amino acid. The amino acid adopted in the technical solution of the present invention can be used as an end-capping reagent to react with acyl chloride groups, thereby regulating a polyamide layer structure, decreasing a cross-linking degree of the polyamide layer, and opening a channel for the passing of water molecules; and moreover, the hydrophilic performance of a membrane surface can also be improved, and a water flux is increased while a high interception rate is ensured.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: April 16, 2019
    Assignee: HUNAN OVAY TECHNOLOGY CO., LTD.
    Inventors: Bo Peng, Hongwei Lu, Qunhui Hu, Hui Yu, Pan He, Jin Wang, Dan Liu, Chunqing Wang, Pengjun Liu
  • Publication number: 20170266629
    Abstract: The present invention provides a high-flux polyamide composite membrane, which includes a composite membrane body, wherein the composite membrane body includes a non-woven fabric, a porous supporting layer and a polyamide layer which are successively arranged; and the polyamide layer is prepared by a polyamine solution and a poly-acyl chloride solution through an interface polymerization reaction, wherein the polyamine solution contains amino acid. The amino acid adopted in the technical solution of the present invention can be used as an end-capping reagent to react with acyl chloride groups, thereby regulating a polyamide layer structure, decreasing a cross-linking degree of the polyamide layer, and opening a channel for the passing of water molecules; and moreover, the hydrophilic performance of a membrane surface can also be improved, and a water flux is increased while a high interception rate is ensured.
    Type: Application
    Filed: June 7, 2017
    Publication date: September 21, 2017
    Inventors: BO PENG, HONGWEI LU, QUNHUI HU, HUI YU, PAN HE, JIN WANG, DAN LIU, CHUNQING WANG, PENGJUN LIU