Patents Assigned to Defond Components Limited
  • Publication number: 20250047223
    Abstract: An electrical switch unit for use with a variable speed electrical device includes a housing for a pair of electrical switching contacts, and an actuator operably connected with one of those contacts. A signaling module is associated with the electrical switch unit, and has signaling circuitry for sensing the movement of the actuator and outputting a signaling module signal indicative of the sensed movement or position of the actuator. A power module with a power switching device controllably supplies power from the DC power source to the DC motor at a speed corresponding to the sensed movement or position of the actuator. A control module receives the signaling module signal, and outputs a control module signal to control the power module.
    Type: Application
    Filed: October 18, 2024
    Publication date: February 6, 2025
    Applicants: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Cheng Chen NIEH, Wai Man WONG, Ming Leong KONG, Pat On KWOK
  • 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: 11907449
    Abstract: A control knob for controlling operation of a machine, the control knob including: an attachment surface configured for attaching the control knob to a surface of the machine; a display member comprising an electronic display module disposed thereon; a motion sensor configured for sensing motion of the user's hand, said sensor being operably-connected to the display member such that, responsive to the motion sensor sensing motion of the user's hand, the display member is configured to switch operation from a sleep mode into an active mode; an operational mode display controller for controlling display of operational modes of the machine upon the electronic display module, said operational mode display controller being configured for rotational movement around the electronic display module amongst a plurality of rotational positions, said operational mode display controller being operably connected with the electronic display module such that, responsive to the rotational movement of the operational mode displ
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: February 20, 2024
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Cheng Chen Nieh, Chi Ming Lai
  • 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: 11464112
    Abstract: A touch LED component and a touch device, and the touch LED component includes a metal cap, a touch button sheathed on an inner wall of the metal cap, and an LED lamp bead coupled to an inner wall of the touch button, a first through hole formed at the top of the metal cap, an induction pin installed at the bottom of the touch button, and an anode pin and a cathode pin installed on both sides of the bottom of the LED lamp bead respectively. The touch device includes a touch panel, a circuit board, and plural touch LED components. The touch LED component with high integration can be packaged by carrier tapes to facilitate automatic plug-ins and simplify production and assembling processes for mass production. The touch device has the features of simple structure, high reliability, good effect and long life.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 4, 2022
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Lei Zhang, Guo Zhu Zeng, Jian Hua Gong, Ding Wei Que, Yun Zhang
  • Patent number: 11257639
    Abstract: A snap-action switch including: a housing in which a plurality of fixed contacts and a plurality of movable contacts are disposed therein, a plunger configured for depressible movement via an aperture in the housing from a first position in which the plunger is relatively extended outwardly of the housing via the aperture, into, a second position in which the plunger is relatively retracted inwardly of the housing via the aperture; and a snap-action assembly operably-connected with the plunger, the snap-action assembly being responsive to depressible movement of the plunger so as to effect snap-action type movement of the plurality of movable contacts between normally opened and normally closed positions with respect to the fixed contacts; a sealing element configured for arrangement around the plunger to occlude ingress of particulates, dust and water from entering the housing via the aperture, the sealing element including a flanged portion; and a securement element configured for arrangement around the sea
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: February 22, 2022
    Assignees: Defond Electech Co., Ltd, Defond Components Limited
    Inventor: Kin Yu Wong
  • Patent number: 11112817
    Abstract: A control stick includes a control portion, a first electrical contact portion and a second electrical contact portion. The control portion has plural first moving contact points, the first electrical contact portion has a control board and plural first static contact points corresponding to the first moving contact points respectively, and a gap exists between the first moving contact point and the respective first static contact point. The first static contact points are electrically connected with the control board. When the control portion swings towards one of the first moving contact points, the first moving contact point is contacted and conducted with the first static contact point. This control stick is capable of achieving the control of a multiple of variables to meet the requirements of controlling a multiple variable in some occasions.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: September 7, 2021
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Ka Him Leung, Cheng Chen Nieh, Cheong Yip Chan
  • 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
  • Patent number: 10965133
    Abstract: A battery pack system for use in connecting a battery pack to a battery pack receiving member of a machine so that the battery pack is operable to supply a suitable amount of power to the machine for operation of the machine via an electrical circuit path that is configurable for electrically connecting the battery pack to the machine, the system including: a first electrical connector member disposed along a first region of the electrical circuit path; and a second electrical connector member; wherein, responsive to the battery pack being connected to the battery pack receiving member of the machine, the second electrical connector member is configured for movement relative to the first electrical connector member to cooperatively form a first configuration which electrically closes the electrical circuit path via which the suitable amount of power is able to be supplied from the battery pack to the machine; and wherein, responsive to the battery pack being disconnected from the battery pack receiving member
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: March 30, 2021
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Tak Chuen Or, Cheng Chen Nieh, Kin Yu Wong
  • Patent number: 10964499
    Abstract: A detection circuit module for use with a household appliance door to detect when the door is closed and/or locked, the detection circuit module having a first and a second contact configured for electrical connection with the household appliance door so as to be operable with the household appliance door, the detection circuit module including: a door closing switch arranged electrically in series between the first connecting contact and an actuator; a door locking switch arranged electrically in series between the actuator member and the second connecting contact; and a diode arranged in series with the actuator and the second connecting contact and the diode being arranged electrically in parallel with the door locking switch.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: March 30, 2021
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventor: Chiu Keung Loong
  • Publication number: 20210059474
    Abstract: A food processor for use in processing food matter, the food processor including: a receptable configured for holding food matter; an electric motor; a blade configured for being rotatably driven by the electric motor so that the blade is able to blend, mix, stir, agitate or chop the food matter within the receptacle; and a pulsing mode module configured for effecting pulsed operation of the food processor with variable speed or variable torque during blending, mixing, stirring, agitating or chopping of the food matter in the receptacle.
    Type: Application
    Filed: July 27, 2020
    Publication date: March 4, 2021
    Applicants: Defond Electech Co., Ltd., Defond Components Limited
    Inventor: Ting Yu KWAN
  • Publication number: 20210053710
    Abstract: The present disclosure relates to the technical field of small household appliances and discloses a separable evacuation device. The separable evacuation device includes an evacuation module. The evacuation module includes a base, which is connected to an opening of a to-be-evacuated container; a vacuum pump, which is disposed on the base and configured to vacuum the to-be-evacuated container; a power supply assembly, which is connected to the vacuum pump and configured to supply power to the vacuum pump; and a control assembly, which is connected to the power supply assembly and the vacuum pump and includes a vacuum pressure switch. The vacuum pressure switch is configured to detect an air pressure value in the to-be-evacuated container and control the power supply assembly to perform one of supplying power to the vacuum pump or powering off the vacuum pump.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Applicants: Defond Electech CO., Ltd, Defond Components Limited
    Inventors: Nieh Cheng CHEN, Poon Kai KEI, Leung Ka HIM, Chan Ka LEUNG
  • Publication number: 20210036637
    Abstract: An electrical switch unit for use with a variable speed electrical device includes a housing for a pair of electrical switching contacts, and an actuator operably connected with one of those contacts. A signaling module is associated with the electrical switch unit, and has signaling circuitry for sensing the movement of the actuator and outputting a signaling module signal indicative of the sensed movement or position of the actuator. A power module with a power switching device controllably supplies power from the DC power source to the DC motor at a speed corresponding to the sensed movement or position of the actuator. A control module receives the signaling module signal, and outputs a control module signal to control the power module.
    Type: Application
    Filed: October 20, 2020
    Publication date: February 4, 2021
    Applicants: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Cheng Chen NIEH, Wai Man WONG, Ming Leong KONG, Pat On KWOK
  • Patent number: 10852854
    Abstract: A control system for use in controlling operation of an electrical appliance, the system including: a processor module disposed inside of a housing of the electrical appliance, the processor module including at least one contactless-type sensor operably-connected with the processor module; an input control module including: an attachment element configured for releasably attaching the input control module to an outer surface of the housing; and at least one sensor-readable element configured for contactless-interaction with the contactless-type sensor.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: December 1, 2020
    Assignees: Defond Electech Co., Ltd, Defond Components Limited
    Inventors: Cheng Chen Nieh, Kai Kei Poon, Ka Leung Luk
  • Patent number: 10848084
    Abstract: An electrical switch unit for use with an electrical device to control operation of a DC motor of the electrical device, the electrical switch unit comprising: a housing which houses a pair of electrical switching contacts, and, an actuator operably connected with at least one of the pair of electrical switching contacts, the actuator being configured for movement relative to the pair of electrical switching contacts 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 the DC power source to the DC motor via the pair of electrical switching contacts, and, an opened configuration wherein power is not able to be supplied from the DC power source to the DC motor via the pair of electrical switching contacts; a signaling module associated with the electrical switch unit comprising signaling circuitry for sensing the movement of the actuator and outputting a signaling module signal indicative of the sensed movement or posit
    Type: Grant
    Filed: August 11, 2018
    Date of Patent: November 24, 2020
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Cheng Chen Nieh, Wai Man Wong, Ming Leong Kong, Pat On Kwok
  • Patent number: 10838525
    Abstract: A control knob for operating a machine including: a member for attaching the knob to the machine, a display member including an electronic display module, an operational mode display controller for controlling display of operational modes upon the display module and configured for rotational movement around the display module amongst rotational positions. The display controller operably connected with the display module such that, responsive to the rotational movement of the display controller amongst the rotational positions, the display module is configured to display operational modes of the machine corresponding to the rotational positions. The control knob including an operational mode selector for selection of one of the operational modes of the machine when the one operational mode is displayed on the display module. The operational mode selector configured for movement between a first position and a second position to actuate selection of the operational mode displayed on the display module.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 17, 2020
    Assignees: Defond Components Limited, Defond Electech Co., Ltd.
    Inventors: Wai Cheong Wilson Chu, Tak Chuen Richard Or
  • Patent number: 10777073
    Abstract: A warning device for use with a computerised warning system, the warning device including: a securement mechanism configured for arrangement between at least one of a secured configuration wherein the securement mechanism is configured to secure the warning device to a person's body, or to an item of clothing or accessory worn or carried on the person's body, and, an unsecured configuration wherein the securement mechanism is configured to allow release of the warning device from securement to the person's body, or to the item of clothing or accessory worn or carried on the person's body; a sensor module configured for sensing when the securement mechanism has been arranged in to the unsecured configuration, and, for sensing at least one type of interaction with the warning device when the securement mechanism has been arranged in the unsecured configuration; and a communication module communicably-connected with a computer server of the computerised system and configured for communicating information to the
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 15, 2020
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventor: Massimo Fontanili
  • Publication number: 20200150786
    Abstract: A control button for controlling operation a machine including: an attachment member for attaching the control button to the machine; a display member including an electronic display module; an operational mode display controller for controlling display of operational modes of the machine upon the electronic display module, the operational mode display controller being operably connected with the electronic display module so that, in response to the operational mode display controller, the electronic display module is configured to display a plurality of operational modes of the machine; and an operational mode selector for controlling selection of one of the operational modes of the machine when one of the operational modes are displayed on the electronic display module, the operational mode selector being configured for movement between at least a first position and a second position to actuate selection of the operational mode displayed on the electronic display module.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Applicants: Dongguan Chen Da Appliance Co. Ltd, Defond Components Limited
    Inventors: Wai Cheong Wilson CHU, Tak Chuen Richard OR
  • Patent number: 10649556
    Abstract: A control knob for controlling operation of a machine, the control knob including: an attachment member configured for attaching the control knob to a surface of the machine so that the control knob is operably connectable with the machine to control operation thereof; a display member comprising an electronic display module disposed thereon; an operational mode display controller for controlling display of operational modes of the machine upon the electronic display module, said operational mode display controller being configured for rotational movement around the electronic display module amongst a plurality of rotational positions, said operational mode display controller being operably connected with the electronic display module such that, responsive to the rotational movement of the operational mode display controller amongst the plurality of rotational positions, the electronic display module is configured to display a plurality of operational modes of the machine corresponding to the plurality of rot
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: May 12, 2020
    Assignees: Dongguan Chen Da Appliance Co. Ltd., Defond Components Limited
    Inventors: Wai Cheong Wilson Chu, Tak Chuen Richard Or
  • Patent number: D965536
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 4, 2022
    Assignees: Defond Electech Co., Ltd., Defond Components Limited
    Inventors: Lei Zhang, Guo Zhu Zeng, Jian Hua Gong, Ding Wei Que, Yun Zhang