Patents by Inventor Dahai QIAN

Dahai QIAN 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: 20240178767
    Abstract: Disclosed in the present invention is a dual-rotor microfluidic energy capturing and power generating device based on a piezoelectric effect. An inner ring of blades and an outer ring of blades are coaxially and movably sleeved, and rotate relatively. Sheet-like magnetic piezoelectric components and steel magnets are provided in an annular gap between the inner ring of blades and the outer ring of blades. Magnetic piezoelectric components are connected to an inner peripheral surface of the outer ring of blades, the magnetic piezoelectric components are magnetically repulsive to the steel magnets, and the outer sides of the magnetic piezoelectric components are axially arranged. The inner ring of blades and the outer ring of blades rotate relatively to drive the magnetic piezoelectric components and the steel magnets to rotate relatively, and further drive the magnetic piezoelectric components to oscillate to generate mechanical energy which is then converted into electric energy.
    Type: Application
    Filed: October 18, 2021
    Publication date: May 30, 2024
    Applicant: ZHEJIANG UNIVERSITY
    Inventors: Peng QIAN, Bo FENG, Dahai ZHANG, Yulin SI, Xiaodong LIU
  • Publication number: 20220396180
    Abstract: An automobile seat and an automobile comprising same, the automobile seat comprising a seat base, a seat back and a seat back adjusting mechanism; the seat back adjusting mechanism comprises a rotating part which is disposed at the lower end of the seat back; the rotating part rotates about the rear end part of the seat base to enable the angle between the seat back and the seat to be changed, and the center of rotation of the rotating part is located below the upper end surface of the seat base. A small step difference may be formed between the lower end part of the seat back and the upper end surface of the seat base when the seat back rotates, and a step difference may even be avoided. The lower end part of the seat back basically does not abut against and press the back of a passenger.
    Type: Application
    Filed: March 5, 2020
    Publication date: December 15, 2022
    Inventors: Dahai QIAN, Chengliang ZHU, Deyu LIU, Yueyun CHEN, Xun TANG
  • Publication number: 20220363166
    Abstract: A zero-gravity seat comprises a seat base, a seat back, a front support frame, and a rear support frame. Upper ends of the front support frame and the rear support frame are respectively hinge-connected to front and rear ends of the seat base. Lower ends of the front support frame and the rear support frame are respectively hinge-connected to a seat mounting base. A lower end of the seat back can rotate around a rear end portion of the seat base. When the seat back and the seat base rotate in a linked manner, a small step difference or even no step difference is present between a lower end portion of the seat back and the upper end surface of the seat base such that the back of the occupant conforms to the seat back, thereby ensuring the comfort of a ride.
    Type: Application
    Filed: March 5, 2020
    Publication date: November 17, 2022
    Inventors: Wu ZHANG, Xun TANG, Dahai QIAN
  • Patent number: 10857914
    Abstract: A locking device includes a locking pin mounting box, a locking pin, a locking spring, a handle and an unlocking tension spring. Respective ends of the locking pin pass through corresponding locking pin guide holes in lateral sides of the locking pin mounting box. A spring bearing boss is provided in a middle position of each locking pin. The locking spring surrounds the corresponding locking pin with one locking spring end in contact with one lateral side and another end in contact with the spring bearing boss. One end of the handle is hinged to a top side of the locking pin mounting box. The unlocking tension spring has one end connected to the handle and another end connected to an end of the locking pin that has passed through the first lateral side. In the locking device, the locking pin is inserted into a locking hole to achieve locking.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: December 8, 2020
    Assignee: Adient Engineering and IP GmbH
    Inventors: Qingwei Q. Feng, Dahai Qian, Shuai Xu, Feixiang Zhu, Xun Tan
  • Patent number: 10688889
    Abstract: A motor vehicle seat rotation mechanism includes a connecting plate connected to a seat, a moving plate, located below the connecting plate and connected to the connecting plate, and a fixed plate, located below the moving plate and connected to an upper slide rail in a seat slide rail assembly. An upper ball assembly is located between a press plate and the moving plate. A lower ball assembly is located between the moving plate and the fixed plate. A lower anti-detachment hook ring is located between the connecting plate and the fixed plate and fixed to the fixed plate. An annular lower anti-detachment hook is provided at an inner edge of the lower anti-detachment hook ring. An annular upper anti-detachment hook is provided at an outer edge of the moving plate. The lower anti-detachment hook and the upper anti-detachment hook are engaged with each other.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: June 23, 2020
    Assignee: Adient Engineering and IP GmbH
    Inventors: Qingwei Q. Feng, Dahai Qian, Shuai Xu, Feixiang Zhu, Xun Tang
  • Publication number: 20190160976
    Abstract: A locking device includes a locking pin mounting box, a locking pin, a locking spring, a handle and an unlocking tension spring. Respective ends of the locking pin pass through corresponding locking pin guide holes in lateral sides of the locking pin mounting box. A spring bearing boss is provided in a middle position of each locking pin. The locking spring surrounds the corresponding locking pin with one locking spring end in contact with one lateral side and another end in contact with the spring bearing boss. One end of the handle is hinged to a top side of the locking pin mounting box. The unlocking tension spring has one end connected to the handle and another end connected to an end of the locking pin that has passed through the first lateral side. In the locking device, the locking pin is inserted into a locking hole to achieve locking.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Inventors: Qingwei Q. FENG, Dahai QIAN, Shuai XU, Feixiang ZHU, Xun TAN
  • Publication number: 20190160977
    Abstract: A motor vehicle seat rotation mechanism includes a connecting plate connected to a seat, a moving plate, located below the connecting plate and connected to the connecting plate, and a fixed plate, located below the moving plate and connected to an upper slide rail in a seat slide rail assembly. An upper ball assembly is located between a press plate and the moving plate. A lower ball assembly is located between the moving plate and the fixed plate. A lower anti-detachment hook ring is located between the connecting plate and the fixed plate and fixed to the fixed plate. An annular lower anti-detachment hook is provided at an inner edge of the lower anti-detachment hook ring. An annular upper anti-detachment hook is provided at an outer edge of the moving plate. The lower anti-detachment hook and the upper anti-detachment hook are engaged with each other.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Inventors: Qingwei Q. FENG, Dahai QIAN, Shuai XU, Feixiang ZHU, Xun TAN