Patents by Inventor Letian Wang

Letian Wang 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: 11959395
    Abstract: A rotor blade system. The rotor blade system includes a rotor and a plurality of blades coupled to the rotor. The plurality of blades are arranged in an airfoil distribution pattern. The airfoil distribution pattern includes one or more baseline blades and one or more intentionally mistuned blades including an intentional mistuning feature.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: April 16, 2024
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Wei-Min Ren, Letian Wang, Kevin E. Turner, Yoon Seok Choi
  • Patent number: 11946246
    Abstract: The present invention provides an energy-storing temperature control material, and belongs to the technical field of temperature control materials. In the energy-storing temperature control material provided in the present invention, the organic synthetic fiber based phase-change material has a three-dimensional dispersion effect, and can form a network constraint for remaining phase-change materials to reinforce mechanical properties of the materials, thereby fixing shapes of the materials and avoiding a liquid-crystal phase separation phenomenon in the phase-change process. The phase-change energy storage agent can absorb and release the heat by means of solid-liquid phase conversion of the material, to achieve the temperature control effect; and the phase-change temperature regulator can regulate a phase-change temperature range of the phase-change material, to make the energy-storing temperature control material suitable for climatic features of northern China.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: April 2, 2024
    Assignee: Qilu University of Technology
    Inventors: Letian Qi, Shoujuan Wang, Xia Meng, Fangong Kong, Ruhe Zhao, Chen Han, Debao Li
  • Patent number: 11920662
    Abstract: A traction saddle disposed on a tractor for connection with a traction pin of a trailer, is provided. The traction saddle includes a base, a gear set, and a damper. A gear carrier of the gear set fixes axial centers of the planetary gears of the gear set, the planetary gears are meshed with an inner ring gear of the gear set, and the inner ring gear is fixed to the base. The gear carrier is used for fixing the traction pin to rotate with the traction pin. The planetary gears are meshed with one end of a sun gear of the gear set to drive the sun gear to rotate, and the damper is connected to the other end of the sun gear to apply resistance to rotation of the sun gear. In addition, a traction pin, a tractor, a trailer, and a truck are also provided.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: March 5, 2024
    Assignee: Beijing Tusen Zhitu Technology Co., LTD.
    Inventor: Letian Wang
  • Publication number: 20230400575
    Abstract: The present invention relates to an addressing determination method. By obtaining the calibration position of the light reflected back from the target object detected by the detector at a specified distance, the first sensing distance of the target object within the first time interval, and the first sensing position of the detector, the invention combines an optical model to obtain the first predicted position of the detector at the specified distance based on the first sensing distance and the first sensing position. The invention further determines whether the first predicted position is the same as the calibration position. If the two positions are different, it indicates errors in the process of selecting the region of interest or obtaining the first sensing position within the region of interest.
    Type: Application
    Filed: August 25, 2023
    Publication date: December 14, 2023
    Inventors: Letian Wang, Chao Zhang, Kai Zang
  • Publication number: 20230375077
    Abstract: A traction saddle disposed on a tractor for connection with a traction pin of a trailer, is provided. The traction saddle includes a base, a gear set, and a damper. A gear carrier of the gear set fixes axial centers of the planetary gears of the gear set, the planetary gears are meshed with an inner ring gear of the gear set, and the inner ring gear is fixed to the base. The gear carrier is used for fixing the traction pin to rotate with the traction pin. The planetary gears are meshed with one end of a sun gear of the gear set to drive the sun gear to rotate, and the damper is connected to the other end of the sun gear to apply resistance to rotation of the sun gear. In addition, a traction pin, a tractor, a trailer, and a truck are also provided.
    Type: Application
    Filed: May 11, 2023
    Publication date: November 23, 2023
    Applicant: Beijing Tusen Zhitu Technology Co., LTD.
    Inventor: Letian WANG
  • Publication number: 20230366993
    Abstract: The present invention is directed to LiDAR systems and methods. In specific embodiments, the received signal is transformed into a histogram, facilitating the identification and filtering of one or more peaks to enhance accuracy. Various other embodiments are also provided, offering diverse solutions for optimizing LiDAR performance in different applications.
    Type: Application
    Filed: May 10, 2023
    Publication date: November 16, 2023
    Inventors: Tairan SUN, Yunfei Ma, Letian Wang
  • Publication number: 20230358140
    Abstract: A rotor blade system. The rotor blade system includes a rotor and a plurality of blades coupled to the rotor. The plurality of blades are arranged in an airfoil distribution pattern. The airfoil distribution pattern includes one or more baseline blades and one or more intentionally mistuned blades including an intentional mistuning feature.
    Type: Application
    Filed: May 3, 2022
    Publication date: November 9, 2023
    Inventors: Wei-Min Ren, Letian Wang, Kevin E. Turner, Yoon Seok Choi
  • Publication number: 20230286481
    Abstract: The present application discloses a braking method, a vehicle and a medium, wherein the vehicle comprises a primary braking system, a parking brake, an auxiliary high-pressure gas tank, and a retarder, and the braking method comprises: determining whether a current air pressure value of the auxiliary high-pressure gas tank reaches a preset air pressure value; controlling, in response to the current air pressure value not reaching the preset air pressure value, the auxiliary high-pressure gas tank to carry out air pressure loading; and controlling, in response to failure of the primary braking system and the current air pressure value reaching the preset air pressure value, a first braking torque of the parking brake and a second braking torque of the retarder according to a deceleration signal of the vehicle so as to control the vehicle to brake.
    Type: Application
    Filed: March 8, 2023
    Publication date: September 14, 2023
    Inventors: Xianbin Li, Letian Wang
  • Publication number: 20220414144
    Abstract: The present disclosure provides a multi-task deep Hash learning-based retrieval method for massive logistics product images. According to the idea of multi-tasking, Hash codes of a plurality of lengths can be learned simultaneously as high-level image representation. Compared with single-tasking in the prior art, the method overcomes shortcomings such as waste of hardware resources and high time cost caused by model retraining under single-tasking. Compared with the traditional idea of learning a single Hash code as an image representation and using it for retrieval, information association among Hash codes of a plurality of lengths is mined, and the mutual information loss is designed to improve the representational capacity of the Hash codes, which addresses the poor representational capacity of a single Hash code, and thus improves the retrieval performance of Hash codes.
    Type: Application
    Filed: June 29, 2022
    Publication date: December 29, 2022
    Inventors: Xiushan NIE, Letian WANG, Xingbo LIU, Shaohua WANG
  • Publication number: 20220399719
    Abstract: The application relates to an oscillation active damping control method and system for grid-tied type-4 wind turbine generator. The method comprises: based on an interconnection model of multiple subsystems, constructing a stored energy function and a dissipated energy function of a current inner loop control subsystem, and interaction energy functions between the current inner loop control subsystem and other subsystems are constructed, then establishing an energy feedback model of Type-4 wind turbine generator; when the oscillation occurs, obtaining instantaneous angular frequency of the PLL, and then based on the energy feedback model, adjusting the current reference value of the q-axis current inner loop generated by the reactive power outer loop control subsystem, to make the stored energy function decrease with time, so as to suppress the oscillation.
    Type: Application
    Filed: May 31, 2022
    Publication date: December 15, 2022
    Inventors: Jing Ma, Letian Wang, Xiangyu Li, Wangyang Du, Yitong Xu
  • Publication number: 20220248677
    Abstract: Disclosed is the use of chlorophyll dihydroporphin as a plant growth regulator. Compared with the prior art, a class of new type plant growth regulators are provided; since the direct decomposition product of chlorophyll is used as a product, the preparation and processing thereof are easier, the structure is relatively simple, and tedious reactions and preparations such as further chemical coordination/chelation/purification are eliminated, so that the product is more environmentally friendly and safer; the product has a better solubility than the corresponding metal chelate and has a more convenient method of use, making it more convenient to be used in the fields; the stability of the product has been improved, with stable quality assurance and a longer shelf life; the product has a natural source and uses a low amount of same due to a low effective dosage, thereby improving the utilization rate of silkworm excrement resources.
    Type: Application
    Filed: June 27, 2019
    Publication date: August 11, 2022
    Inventors: Junhai HUANG, Liming CHEN, Letian WANG, Dongfeng MENG, Ming LI, Jin HU, Yong REN
  • Publication number: 20220221562
    Abstract: The present invention is directed to lidar systems and methods thereof In a specific embodiment, the present invention provides a lidar system that includes a SPAD sensor includes n SPAD pixel rows. Based on the location of a target object on the SPAD sensor, m rows of n SPAD pixels row are selected based at least on the histograms generated using the n SPAD pixel rows. There are other embodiments as well.
    Type: Application
    Filed: March 23, 2022
    Publication date: July 14, 2022
    Inventors: Letian WANG, Chao ZHANG
  • Patent number: 11092018
    Abstract: Damping members for turbocharger assemblies, methods for providing turbocharger assemblies, and turbocharger assemblies are described herein. The damping members include bodies having shapes to fit between a recess extending into a rotor disk of a turbocharger and laterally protruding shoulders of platforms in neighboring blades of the turbocharger. The bodies dampen vibrations of the blades during rotation of the blades. The damping members may include a variety of shapes, such as a sheet, a wedge, a tapered pin, a cylindrical pin, a bent sheet, or another shape.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 17, 2021
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: Suryarghya Chakrabarti, Yashwanth Tummala, Letian Wang, Walter John Smith, Daniel Edward Loringer, Brian Denver Potter, Matthew John Malone
  • Patent number: 10643090
    Abstract: The present disclosure relates to the technical field of computer visual detection processing, and provides a method for guiding users to restore Rubik's cubes. The method comprises step 1, acquiring arrangement information of colored blocks of the Rubik's cube; step 2, displaying restoration process of the Rubik's cube.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 5, 2020
    Assignee: SHANGHAI PUTAO TECHNOLOGY CO., LTD.
    Inventors: Letian Wang, Peng Du, Qingyun Li, Huan Chen, Mingying Gu
  • Publication number: 20180322356
    Abstract: The present disclosure relates to the technical field of computer visual detection processing, and provides a method for guiding users to restore Rubik's cubes. The method comprises step 1, acquiring arrangement information of colored blocks of the Rubik's cube; step 2, displaying restoration process of the Rubik's cube.
    Type: Application
    Filed: December 19, 2017
    Publication date: November 8, 2018
    Applicant: Shanghai Putao Technology co., Ltd.
    Inventors: Letian Wang, Peng Du, Qingyun Li, Huan Chen, Mingying Gu
  • Publication number: 20170037734
    Abstract: Damping members for turbocharger assemblies, methods for providing turbocharger assemblies, and turbocharger assemblies are described herein. The damping members include bodies having shapes to fit between a recess extending into a rotor disk of a turbocharger and laterally protruding shoulders of platforms in neighboring blades of the turbocharger. The bodies dampen vibrations of the blades during rotation of the blades. The damping members may include a variety of shapes, such as a sheet, a wedge, a tapered pin, a cylindrical pin, a bent sheet, or another shape.
    Type: Application
    Filed: August 7, 2015
    Publication date: February 9, 2017
    Inventors: Suryarghya Chakrabarti, Yashwanth Tummala, Letian Wang, Walter John Smith, Daniel Edward Loringer, Brian Denver Potter, Matthew John Malone
  • Publication number: 20130078103
    Abstract: A fan blade has a main body extending between a leading edge and a trailing edge. Channels are formed into the main body from at least one open side. A plurality of ribs extend across the main body intermediate the channels. The fan blade has a dovetail and an airfoil extending radially outwardly from the dovetail. The ribs have a thickness defined as measured generally from the leading edge toward the trailing edge. A thickness of at least one of the ribs is generally thicker adjacent radially inner ends and becomes thinner moving in a radially outward direction.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Inventors: Christopher S. McKaveney, Letian Wang