Patents by Inventor Steven Po-Cheng Tung

Steven Po-Cheng Tung 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: 20240367704
    Abstract: A castor with pressure brake device includes a wheel stand; a connecting rod for connecting the wheel stand to a seat base; a wheel shaft; and two wheels. A C-shaped shaft hole is disposed on the wheel stand, and the wheel shaft is longitudinal movably fixed in the C-shaped shaft hole. A groove is disposed above the inner side of the C-shaped shaft hole; a spring is disposed in the groove and arranged vertically to the wheel shaft, wherein an end of the spring is in contact with a bottom of the groove, and the other end of the spring is in contact with the wheel shaft. Each of the wheels comprises a fitting portion, and the fitting portion is tightly sleeved on corresponding one of the two ends of the wheel shaft.
    Type: Application
    Filed: May 3, 2023
    Publication date: November 7, 2024
    Inventor: Steven PO-CHENG TUNG
  • Publication number: 20230378884
    Abstract: A power transistor conversion device comprising: a base frame; and a fixing frame; wherein the base frame is provided with two limit holes of the base frame for fixing the base frame, and two through holes through which an input pin and an output pin of the power transistor pass through the base frame; the fixing frame is located perpendicular to an upper surface of the base frame, and the fixing frame is fastened to the base frame; the fixing frame is provided with a transistor limit unit for fixing the power transistor on the fixing frame. When applied, the transistor or the power transistor is fixed on the power transistor conversion device through the transistor limit unit, and then directly replaces the position of the power transistor to achieve better replaceability and better heat dissipation.
    Type: Application
    Filed: May 23, 2022
    Publication date: November 23, 2023
    Inventor: Steven PO-CHENG TUNG
  • Patent number: 11785751
    Abstract: An adapter with a heat dissipation layer applied in locations of high electric current and provided for using in high-current electrical appliances, the adapter is provided with a heat dissipation fan on one side or on two sides at the same time, the heat dissipation fan is activated by a small amount of electric power from the adapter, so that the heat dissipation fan is capable of performing heat dissipation function for the adapter, and a guide rod in the adapter is sleeved with an embossed heat dissipation layer, which makes the adapter's heat dissipation effect better, thereby preventing the adapter from deteriorating due to high heat, maintaining product stability, prolonging service life, and reducing work accidents.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: October 10, 2023
    Inventor: Steven Po-Cheng Tung
  • Publication number: 20220400587
    Abstract: An adapter with a heat dissipation layer applied in locations of high electric current and provided for using in high-current electrical appliances, the adapter is provided with a heat dissipation fan on one side or on two sides at the same time, the heat dissipation fan is activated by a small amount of electric power from the adapter, so that the heat dissipation fan is capable of performing heat dissipation function for the adapter, and a guide rod in the adapter is sleeved with an embossed heat dissipation layer, which makes the adapter's heat dissipation effect better, thereby preventing the adapter from deteriorating due to high heat, maintaining product stability, prolonging service life, and reducing work accidents.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 15, 2022
    Inventor: Steven Po-Cheng TUNG
  • Patent number: 10381825
    Abstract: A battery assembly device with charging and discharging protection is provided. The aforementioned device includes a plurality of serially connected battery modules and each of the battery module further includes one or a plurality of battery units, a plurality of serially connected first diodes which are parallel connected with the battery unit, a protection circuit including a second diode and third diode which are parallel connected to each other, and a fourth diode. Aforementioned protection circuit is serially connected with the battery unit and configured between two connection points of the battery module, electrode polarity of the second diode and electrode polarity of third diode at connection point are different, and the fourth diode are configured between the two connection points of the battery module and its electrode polarity are different with the connection point of the battery unit.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: August 13, 2019
    Assignee: ELMATEK INTERNATION CORP.
    Inventors: Kung-Chao Tung, Steven Po-Cheng Tung
  • Patent number: 9984797
    Abstract: A high voltage impedance device with surface leakage proof configuration is applied in a divider. Aforementioned divider is assembled by a high impedance element, an inner case body and an outer case body. The high impedance element is sealed in the inner case body and a closed interlayer between the inner case body and the outer case body is filled with noble gas as an insulating layer. While the high impedance element is applied in high voltage, the closed interlayer can prevent the current-leakage from forming impedance paralleled with the high impedance element. The current-leakage is formed on the surface of insulting portion, or is formed by moisture, dust or corona effect. Therefore, the current-leakage proof divider may maintain the stability/linearity of the voltage division and then reduce the distance between two ends of the high impedance element effectively and still maintain the linearity of measuring voltage.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: May 29, 2018
    Assignee: ELMATEK INTERNATION CORP.
    Inventors: Kung-Chao Tung, Steven Po-Cheng Tung
  • Publication number: 20180102641
    Abstract: A battery assembly device with charging and discharging protection is provided. The aforementioned device includes a plurality of serially connected battery modules and each of the battery module further includes one or a plurality of battery units, a plurality of serially connected first diodes which are parallel connected with the battery unit, a protection circuit including a second diode and third diode which are parallel connected to each other, and a fourth diode. Aforementioned protection circuit is serially connected with the battery unit and configured between two connection points of the battery module, electrode polarity of the second diode and electrode polarity of third diode at connection point are different, and the fourth diode are configured between the two connection points of the battery module and its electrode polarity are different with the connection point of the battery unit.
    Type: Application
    Filed: April 20, 2017
    Publication date: April 12, 2018
    Inventors: Kung-Chao Tung, Steven Po-Cheng Tung
  • Publication number: 20170330655
    Abstract: A high voltage impedance device with surface leakage proof configuration is applied in a divider. Aforementioned divider is assembled by a high impedance element, an inner case body and an outer case body. The high impedance element is sealed in the inner case body and a closed interlayer between the inner case body and the outer case body is filled with noble gas as an insulating layer. While the high impedance element is applied in high voltage, the closed interlayer can prevent the current-leakage from forming impedance paralleled with the high impedance element. The current-leakage is formed on the surface of insulting portion, or is formed by moisture, dust or corona effect. Therefore, the current-leakage proof divider may maintain the stability/linearity of the voltage division and then reduce the distance between two ends of the high impedance element effectively and still maintain the linearity of measuring voltage.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 16, 2017
    Inventors: Kung-Chao Tung, Steven Po-Cheng Tung