Patents by Inventor Wai-Man Wong

Wai-Man Wong 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: 11975434
    Abstract: A control assembly for use with an electrical device to control operation of the electrical device in a plurality of operational modes.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: May 7, 2024
    Assignees: DEFOND ELECTECH CO., LTD, DEFOND COMPONENTS LIMITED
    Inventor: Wai Man Wong
  • Publication number: 20240120247
    Abstract: A method of manufacturing a semiconductor package is provided, with an integrated heatsink and electrical connection feature. The semiconductor die can be attached to the terminal using eutectic bonding, preferably CuSn eutectic, Ag containing adhesives or Ag sintering material. These bondings are lead (Pb) free connection methods, which make the finished semiconductor package RoHS compliant (restriction of hazardous materials).
    Type: Application
    Filed: October 6, 2023
    Publication date: April 11, 2024
    Applicant: NEXPERIA B.V.
    Inventors: Regnerus Hermannus Poelma, Wai Man Wong, Tim Böttcher, Hans-Juergen Funke, Jannik Entringer, Yuet Keung Cheung, Chun Ning Chan
  • Patent number: 11919137
    Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: March 5, 2024
    Assignee: DEFOND ELECTECH CO. LTD.
    Inventors: Wai Man Wong, Chiu Keung Loong
  • Patent number: 11913812
    Abstract: A control assembly for controlling a speed or torque of operation of an electric device includes a control assembly housing, a magnetic sensor, a magnetic element; and an actuator. The actuator moves relative to the control assembly and, responsive to that movement, the magnetic sensor and magnetic element are moved relative to each other between a first position and a second position so that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position. A control module is operably connected to the magnetic sensor and configured for controlling the electric device, and a magnetic shielding element is positioned within the control assembly housing to alleviate a magnetic signal source external to the control assembly from interfering with the sensing by the magnetic sensor.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: February 27, 2024
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Cheng Chen Nieh, Chiu Keung Loong, Wai Man Wong
  • Patent number: 11884315
    Abstract: This disclosure describes, in part, a mobile apparatus for identifying items. For instance, the mobile apparatus may include a main frame, a chassis attached to the main frame, and a basket that attaches to the chassis in order to prevent the basket from contacting the main frame. One or more sensors, such as weight sensor(s), may be located between the basket and the main frame. The mobile apparatus may further include a shelf that extends substantially horizontally from the main frame, where a gate separates the basket from the shelf. A user may then place first item(s) within a receptacle of the basket and second item(s) within a receptacle of the shelf. The mobile apparatus may further include a handlebar module attached to the main frame, where the handlebar module includes an opening for inserting a removable battery of the mobile apparatus.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: January 30, 2024
    Assignee: Amazon Technologies, Inc.
    Inventors: Wade Burch, Robert David Serra, Matthew Clark Webster, Jacob A. Siegel, David Wai-Man Wong, Jacob Paul Warren, Brendan Kyle McLeod
  • Publication number: 20230245840
    Abstract: The present disclosure provides a switching device, which includes an electricity leading member, a power transmission member, and a conductive connecting member. The first end of the electricity leading member is configured to be electrically connected with the power supply terminal, and the second end of the electricity leading member is provided with a first contact portion; the power transmission member is provided with a second contact portion, and the second contact portion is configured to contact and be electrically connected with the first contact portion; one end of the conductive connecting member is connected with the electricity leading member, the other end is connected with the power transmission member, the electricity leading member is electrically connected with the power transmission member through the conductive connecting member.
    Type: Application
    Filed: April 4, 2022
    Publication date: August 3, 2023
    Inventors: Cheng Chen Nieh, Chiu Keung Loong, Wai Man Wong
  • Publication number: 20230219207
    Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
    Type: Application
    Filed: March 8, 2023
    Publication date: July 13, 2023
    Inventors: Wai Man Wong, Chiu Keung Loong
  • Patent number: 11694862
    Abstract: A trigger switch assembly for use with an electrical device, including: a switch housing; a switch circuit disposed within the switch housing; an actuator rod configured for operable-interaction with a contact lever of the switch circuit; a trigger member having an actuator rod engagement recess configured for receiving a first end of the actuator rod therein, and, a finger-engagement portion configured for engagement by a user's finger so as to urge the actuator rod along the movement axis from the OFF position in to its ON position; and a lock-off mechanism.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: July 4, 2023
    Assignees: DEFOND ELECTECH CO., LTD., DEFOND COMPONENTS LIMITED
    Inventor: Wai Man Wong
  • Patent number: 11664710
    Abstract: A variable-speed control assembly for use in controlling speed of an electric motor of an electric device, the variable-speed control assembly including: a housing; a speed signaling circuit module located within the housing including a pair of spaced-apart electrically-conductive stationary contact members and a movable electrically-conductive contact member configured for movement relative to the pair of stationary contact members between at least one of an OFF position in which the movable contact member does not electrically connect the pair of stationary contact members, and, a plurality of ON positions in which the movable contact member electrically connects the pair of stationary contact members such that an electric current supplied to the speed signaling circuit module from a power supply of the electric device is able to flow between the pair of stationary contact members via the movable contact member; wherein the movable contact member includes an elastically-deformable material configured for de
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: May 30, 2023
    Assignees: DEFOND COMPONENTS LIMITED, DEFOND ELECTECH CO., LTD
    Inventor: Wai Man Wong
  • Patent number: 11623335
    Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 11, 2023
    Assignees: DEFOND COMPONENTS LIMITED, DEFOND ELECTECH CO., LTD.
    Inventors: Wai Man Wong, Chiu Keung Loong
  • Patent number: 11560706
    Abstract: Disclosed herewith a modular integrated building and a construction method thereof. The building comprises multiple prefabricated room units (1). A bottom of a load-bearing structure of the prefabricated room unit (1) is provided with a semi-prefabricated connecting port (2). Reinforcing bars arranged at a top of the prefabricated room unit (1) of a next floor are inserted in the connecting port (2) and thus connected with reinforcing bars arranged therein, so that the prefabricated room units (1) of two adjacent floors are connected with each other through in-situ casting concrete in the connecting port (2). A cast-in-situ concrete interlayer (3) is arranged on a top plate (11) of the prefabricated room unit (1) of a next floor, for connecting adjacent prefabricated room units (1) of a same floor together.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: January 24, 2023
    Assignee: Yau Lee Wah Construction Materials (Huizhou) Company Limited
    Inventors: Conrad Tin Cheung Wong, Rosana Wai Man Wong
  • Publication number: 20220397426
    Abstract: A control assembly for controlling a speed or torque of operation of an electric device includes a control assembly housing, a magnetic sensor, a magnetic element; and an actuator. The actuator moves relative to the control assembly and, responsive to that movement, the magnetic sensor and magnetic element are moved relative to each other between a first position and a second position so that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position. A control module is operably connected to the magnetic sensor and configured for controlling the electric device, and a magnetic shielding element is positioned within the control assembly housing to alleviate a magnetic signal source external to the control assembly from interfering with the sensing by the magnetic sensor.
    Type: Application
    Filed: November 22, 2021
    Publication date: December 15, 2022
    Applicants: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Cheng Chen NIEH, Chiu Keung LOONG, Wai Man WONG
  • Patent number: 11466445
    Abstract: The present invention discloses an integrated steel concrete building and its construction method. The building comprises a plurality of prefabricated room modules of steel, each including at least one column having a structure of hollow steel tube, which has an inner chamber inserted with penetrating rebars and poured with concrete. The penetrating rebars extend upwardly out of the column of the prefabricated room module into an inner chamber of a column of a prefabricated room module of an upper floor.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: October 11, 2022
    Assignee: Yau Lee Wah Construction Materials (Huizhou) Company Limited
    Inventors: Conrad Tin Cheung Wong, Rosana Wai Man Wong
  • Publication number: 20210348379
    Abstract: The present invention discloses an integrated steel concrete building and its construction method. The building comprises a plurality of prefabricated room modules of steel, each including at least one column having a structure of hollow steel tube, which has an inner chamber inserted with penetrating rebars and poured with concrete. The penetrating rebars extend upwardly out of the column of the prefabricated room module into an inner chamber of a column of a prefabricated room module of an upper floor.
    Type: Application
    Filed: August 31, 2020
    Publication date: November 11, 2021
    Applicant: Yau Lee Wah Construction Materials (Huizhou) Company Limited
    Inventors: Conrad Tin Cheung WONG, Rosana Wai Man WONG
  • Publication number: 20210183589
    Abstract: An electrical switch unit for use in controlling operation of an electrical device, the electrical switch unit including: an electrical switch unit housing for housing at least a pair of electrical switching contacts of the electrical switch unit, said electrical switch unit housing including a first housing member and a second housing member that are configured for attachment together at peripheral regions of the first and second housing members so as to cooperatively form an enclosed space for housing the pair of electrical switching contacts therein; an actuator member operably-connected with at least one of the pair of electrical switching contacts, the actuator being configured for movement relative inwardly and outwardly of an opening in the electrical switch unit housing so as to arrange the pair of electrical switching contacts into at least one of a closed configuration wherein power is able to be supplied from a power source to motor or other electrically-operable element of the electrical device vi
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Applicants: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Wai Man WONG, Ming Leong KONG, Cheng Chen NIEH
  • Publication number: 20210142966
    Abstract: A trigger switch assembly for use with an electrical device, including: a switch housing; a switch circuit disposed within the switch housing; an actuator rod configured for operable-interaction with a contact lever of the switch circuit; a trigger member having an actuator rod engagement recess configured for receiving a first end of the actuator rod therein, and, a finger-engagement portion configured for engagement by a user's finger so as to urge the actuator rod along the movement axis from the OFF position in to its ON position; and a lock-off mechanism.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 13, 2021
    Inventor: Wai Man Wong
  • Patent number: 10982427
    Abstract: Disclosed herewith a prefabricated bathroom and a construction method and an installation method thereof. The prefabricated bathroom includes a bottom unit (11), multiple wall units (12) and a top plate unit (13). One of the wall units (12) is a structural wall (14), which is provided with a recessed top region (141) reserved for later pouring, a middle full-prefabricated structural wall body (142), and a recessed bottom region (143) reserved for later pouring. Top exposed reserve bars (144) of the prefabricated bathroom of a floor are inserted into the recessed bottom region (143) of the prefabricated bathroom of a next floor, and connected with bottom exposed reserve bars (146) thereof, so that the prefabricated bathroom of said floor can be connected with that of said next floor through pouring concrete in the recessed top region (141) and the recessed bottom region (143).
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 20, 2021
    Assignee: Yau Lee Wah Construction Materials (Huizhou) Company Limited
    Inventors: Conrad Tin Cheung Wong, Rosana Wai Man Wong
  • Publication number: 20210111611
    Abstract: A variable-speed control assembly for use in controlling speed of an electric motor of an electric device, the variable-speed control assembly including: a housing; a speed signaling circuit module located within the housing including a pair of spaced-apart electrically-conductive stationary contact members and a movable electrically-conductive contact member configured for movement relative to the pair of stationary contact members between at least one of an OFF position in which the movable contact member does not electrically connect the pair of stationary contact members, and, a plurality of ON positions in which the movable contact member electrically connects the pair of stationary contact members such that an electric current supplied to the speed signaling circuit module from a power supply of the electric device is able to flow between the pair of stationary contact members via the movable contact member; wherein the movable contact member includes an elastically-deformable material configured for de
    Type: Application
    Filed: October 14, 2020
    Publication date: April 15, 2021
    Inventor: Wai Man WONG
  • Patent number: D937527
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: November 30, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert P. Irwin, Robert David Serra, Jacob A. Siegel, Matthew Clark Webster, David Wai-Man Wong, Charles H. Wood
  • Patent number: D1004893
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: November 14, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert P. Irwin, Robert David Serra, Jacob A. Siegel, Matthew Clark Webster, David Wai-Man Wong, Charles H. Wood