Patents by Inventor Sheng An Tsai

Sheng An Tsai 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: 20250125106
    Abstract: A mechanical keyboard is provided, which includes a plurality of mechanical keys, a circuit board, a plurality of first magnetic elements, a lower casing and a plurality of second magnetic elements. The mechanical keyboard has a key region and an edge region surrounding the key region. The mechanical keys are located in the key region. The circuit board is disposed beneath the mechanical keys. The first magnetic elements are disposed beneath the circuit board and distributed in the key region. The lower casing is disposed beneath the mechanical keys, the circuit board and the first magnetic elements. The second magnetic elements are disposed over the lower casing, in which the second magnetic elements respectively correspond to the first magnetic elements and respectively repel the first magnetic elements.
    Type: Application
    Filed: November 13, 2023
    Publication date: April 17, 2025
    Inventors: Shu-An Huang, Kai-Wen Lee, Sheng-An Tsai, Li-Kuei Cheng, Tsun-Han Wu, Chen-Wei Chan, Shao-Ju Yen
  • Patent number: 12057266
    Abstract: A wheel control mechanism includes a support base, a wheel module, a first magnetic module and a second magnetic module. The wheel module, the first magnetic module and the second magnetic module are installed on the support base. The first magnetic module generates a magnetic attractive force to attract a metal ratchet of the wheel module. By adjusting the position of the second magnetic module relative to the first magnetic module, the strength of the magnetic attractive force is changed. Consequently, the rotation of the wheel module results in a tactile feel or does not result in the tactile feel.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: August 6, 2024
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chun-Nan Su, Chun-Che Wu, Sheng-An Tsai, Ming-Hao Hsieh, Li-Kuei Cheng
  • Patent number: 12039114
    Abstract: A mouse device includes a casing and a roller module. The roller module is disposed within the casing. The roller module includes a scroll wheel, a magnetic ratchet, a supporting element and a permanent magnet. The scroll wheel includes a concave structure. The magnetic ratchet is disposed within the concave structure of the scroll wheel. While the scroll wheel is rotated, the magnetic ratchet is correspondingly rotated. The magnetic ratchet includes a ratchet frame and plural tooth structures. The plural tooth structures are discretely arranged on an inner surface of the ratchet frame. While the magnetic ratchet is rotated with the scroll wheel, the plural tooth structures of the magnetic ratchet are sequentially transferred through a region over the permanent magnet, and a magnetic attractive force between the corresponding tooth structure and the permanent magnet is generated.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: July 16, 2024
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chun-Nan Su, Chun-Che Wu, Sheng-An Tsai, Shu-An Huang, Li-Kuei Cheng
  • Patent number: 12028063
    Abstract: A control wheel includes a casing, a wheel ring, a first magnetic element, a pivotal shaft and a second magnetic element. The casing includes an accommodation structure and a concave structure. The accommodation structure includes a base. The wheel ring is disposed within the accommodation structure. The wheel ring is exposed outside through the accommodation structure and the concave structure. The pivotal shaft is disposed within the wheel ring and connected with the base of the accommodation structure. The wheel ring is rotatable relative to the pivotal shaft. The first magnetic element is disposed within the wheel ring. The second magnetic element is disposed within the base of the accommodation structure. The first magnetic element of the wheel ring and the second magnetic element are magnetically attracted by each other. Consequently, a rotating speed of the wheel ring is decreased.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: July 2, 2024
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chun-Che Wu, Ming-Hao Hsieh, Sheng-An Tsai
  • Publication number: 20240071665
    Abstract: A wheel control mechanism includes a support base, a wheel module, a first magnetic module and a second magnetic module. The wheel module, the first magnetic module and the second magnetic module are installed on the support base. The first magnetic module generates a magnetic attractive force to attract a metal ratchet of the wheel module. By adjusting the position of the second magnetic module relative to the first magnetic module, the strength of the magnetic attractive force is changed. Consequently, the rotation of the wheel module results in a tactile feel or does not result in the tactile feel.
    Type: Application
    Filed: September 14, 2022
    Publication date: February 29, 2024
    Inventors: Chun-Nan Su, Chun-Che Wu, Sheng-An Tsai, Ming-Hao Hsieh, Li-Kuei Cheng
  • Patent number: 11810733
    Abstract: A key structure includes a supporting frame, a keycap, a stabilizer bar and two flexible hooks. The supporting frame includes at least one supporting hook. The keycap is located over the supporting frame. The keycap includes two connecting parts. The stabilizer bar includes a transverse bar part and two branch bar parts. The transverse bar part is locked in the at least one supporting hook of the supporting frame. The two flexible hooks are arranged between the keycap and the stabilizer bar. Each of the two flexible hooks includes a coupling terminal and a hook part. Each of the two connecting parts of the keycap is detachably connected with the coupling terminal of the corresponding flexible hook. Each of the two branch bar parts of the stabilizer bar is locked in the hook part of the corresponding flexible hook.
    Type: Grant
    Filed: October 25, 2022
    Date of Patent: November 7, 2023
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Sheng-An Tsai, Chun-Che Wu
  • Patent number: 11797108
    Abstract: A mouse device includes a roller module. The roller module includes a base member, a scroll wheel, a magnetic conductor, a swingable arm, a driving motor and an actuating element. The scroll wheel is installed on the base member. The magnetic conductor is located beside the scroll wheel. When the scroll wheel is rotated, the magnetic conductor is correspondingly rotated. The swingable arm is installed on the base member. The swingable arm includes a magnetic element. The swingable arm is swingable relative to the magnetic conductor. When the swingable arm is swung to a first position, the magnetic element is aligned with the magnetic conductor. Consequently, a magnetic attraction force between the magnetic element and the magnetic conductor is generated. When the swingable arm is swung to a second position, the magnetic attraction force between the magnetic element and the magnetic conductor is eliminated.
    Type: Grant
    Filed: February 2, 2023
    Date of Patent: October 24, 2023
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chun-Nan Su, Chun-Che Wu, Shu-An Huang, Chun-Lin Chu, Ming-Hao Hsieh, Sheng-An Tsai, Li-Kuei Cheng
  • Patent number: 11728109
    Abstract: A key structure includes a casing, a covering member, a pressing element, a triggering post, a switch element. The casing has an opening. The opening is covered by the covering member. The pressing element is disposed within the opening and connected with the covering member. The pressing element includes a middle part and an extension part. The triggering post is installed on the middle part of the pressing element. The triggering post is extended in the direction toward the inner position of the casing. When an external force is applied to the middle part of the pressing element, the triggering post is moved toward the switch element to push the switch element. When the external force is applied to the extension part of the pressing element, the triggering post is correspondingly moved with the pressing element in an inclined manner to push the switch element.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: August 15, 2023
    Assignee: PRIMAX ELECTRONICS LTD
    Inventors: Yung-Tai Pan, Chun-Che Wu, Ming-Hao Hsieh, Sheng-An Tsai
  • Publication number: 20230215668
    Abstract: A key structure includes a casing, a covering member, a pressing element, a triggering post, a switch element. The casing has an opening. The opening is covered by the covering member. The pressing element is disposed within the opening and connected with the covering member. The pressing element includes a middle part and an extension part. The triggering post is installed on the middle part of the pressing element. The triggering post is extended in the direction toward the inner position of the casing. When an external force is applied to the middle part of the pressing element, the triggering post is moved toward the switch element to push the switch element. When the external force is applied to the extension part of the pressing element, the triggering post is correspondingly moved with the pressing element in an inclined manner to push the switch element.
    Type: Application
    Filed: June 28, 2022
    Publication date: July 6, 2023
    Inventors: Yung-Tai Pan, Chun-Che Wu, Ming-Hao Hsieh, Sheng-An Tsai
  • Publication number: 20230216499
    Abstract: A control wheel includes a casing, a wheel ring, a first magnetic element, a pivotal shaft and a second magnetic element. The casing includes an accommodation structure and a concave structure. The accommodation structure includes a base. The wheel ring is disposed within the accommodation structure. The wheel ring is exposed outside through the accommodation structure and the concave structure. The pivotal shaft is disposed within the wheel ring and connected with the base of the accommodation structure. The wheel ring is rotatable relative to the pivotal shaft. The first magnetic element is disposed within the wheel ring. The second magnetic element is disposed within the base of the accommodation structure. The first magnetic element of the wheel ring and the second magnetic element are magnetically attracted by each other. Consequently, a rotating speed of the wheel ring is decreased.
    Type: Application
    Filed: July 5, 2022
    Publication date: July 6, 2023
    Inventors: Chun-Che Wu, Ming-Hao Hsieh, Sheng-An Tsai
  • Patent number: 11681379
    Abstract: A mouse device includes a wheel control mechanism and a control unit. The control unit is electrically connected with a magnetic force module and a rotating speed detector of the wheel control mechanism. Under control of the control unit, a first direction current or a second direction current is selectively provided to drive the magnetic force module. The flowing directions of the first direction current and the second direction current are opposite. Consequently, the rotating mode of the wheel control mechanism can be switched between different modes.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: June 20, 2023
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chun-Nan Su, Chun-Che Wu, Chun-Lin Chu, Shu-An Huang, Ming-Hao Hsieh, Sheng-An Tsai, Li-Kuei Cheng
  • Patent number: 11404227
    Abstract: A keyboard device includes a casing and at least one supporting leg. The supporting leg includes a first supporting part, a second supporting part and a pivotal shaft. The supporting leg is pivotally coupled to an accommodation space of the casing through the pivotal shaft. The pivotal shaft is rotatable relative to the casing. Consequently, the supporting leg can be switched between a stored state and a supporting state. When the supporting leg is in the stored state, the supporting leg is accommodated within the accommodation space, and the accommodation space is covered by the first supporting part and the second supporting part. While the supporting leg is switched from the stored state to the supporting state, the first supporting part is pushed into the accommodation space in response to an external force, and the second supporting part is correspondingly moved away from the accommodation space.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: August 2, 2022
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chun-Lin Chu, Sheng-An Tsai, Hsiang-Yu Ou
  • Patent number: 11298831
    Abstract: A robotic system for facilitating return alignment includes a docking station and a mobile working machine. The docking station includes a charging module and a confirmation element. The mobile working machine includes a power module and a sensing device electrically connected to the power module. When the mobile working machine is moved to one side of the docking station to trigger the sensing device by the confirmation element, the charging module starts to electrically charge the power module.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: April 12, 2022
    Assignee: Quanta Computer Inc.
    Inventors: Sheng-An Tsai, Lu-Lung Tsao, Yu-Ching Tsai
  • Patent number: 11117264
    Abstract: A robotic system includes a docking station, a mobile working machine, and an electronic device. The mobile working machine includes a machine body and a transmission wheel device disposed on the machine body for loading and moving the machine body. The electronic device is detachably connected to the mobile working machine. The docking station includes a station base and a transferring device disposed on the station base for selectively carrying the electronic device away from the mobile working machine.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: September 14, 2021
    Assignee: Quanta Computer Inc.
    Inventors: Sheng-An Tsai, Lu-Lung Tsao, Yu-Ching Tsai
  • Patent number: 11116376
    Abstract: A vacuum cleaner system includes a docking station and a mobile vacuum cleaner. The docking station includes a charging stand and a parking plate. The parking plate is connected to the charging stand, and formed with two position-limiting slots. The mobile vacuum cleaner includes a working machine body and two transmission wheels. The transmission wheels are rotatably arranged on the working machine body for traveling the working machine body. When the transmission wheels are moved into the position-limiting slots, respectively, the mobile vacuum cleaner presses the parking plate by a gravity of the mobile vacuum cleaner through the two transmission wheels.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 14, 2021
    Assignee: QUANTA COMPUTER INC.
    Inventors: Sheng-An Tsai, Lu-Lung Tsao, Yu-Ching Tsai
  • Patent number: 11099667
    Abstract: A mouse device includes a casing and a roller module. The roller module is installed within the casing. The roller module includes a roller wheel, a movable magnet, a first magnet and a second magnet. In response to a repulsive force between the first magnet and the movable magnet, the roller module is in a tactile feel mode. In response to an attractive force between the second magnet and the movable magnet, the roller module is in a smooth scrolling mode.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: August 24, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Li-Kuei Cheng, Sheng-An Tsai, Yung-Ming Tsai, Shu-An Huang, Chun-Che Wu
  • Patent number: 11094479
    Abstract: A key structure includes a keycap, a pedestal and an elastic element. The keycap includes a main body and a coupling shaft. The pedestal includes a key slot. The key slot has an upper part and a lower part. The coupling shaft is penetrated through the upper part of the key slot and movable within the key slot upwardly or downwardly. The elastic element is installed in the lower part of the key slot. After an external force applied to the keycap is released, the elastic element is elastically restored, so that the keycap is returned to an original position. At the same time, the buffering elements in the key slot interfere with the coupling shaft. Consequently, an ascending speed of the keycap is reduced, and a click sound generated from the collision between keycap and the pedestal is reduced.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: August 17, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Xiao-Jun Chu, Li-Qiang Chen, Liu-Bing Cai, Sheng-An Tsai, Chun-Che Wu
  • Patent number: 10903025
    Abstract: A keyboard with a vibration function is provided. The keyboard includes a base member, an upper cover, a basic key structure and a vibration key structure. The vibration key structure includes a control module, a vibration keycap and an isolation element. The control module is fixed on the upper cover. When the control module is triggered, a vibration key signal is generated and a vibration action is provided. The control module is covered by the vibration keycap. The vibration keycap is exposed outside the upper cover. The isolation element is arranged between the control module and the upper cover. The vibration key structure is enclosed by the isolation element, so that the energy of the vibration action from the control module is isolated.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: January 26, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Sheng-An Tsai, Chun-Che Wu, Shu-Wei Chou, Chun-Nan Su, Tzu-Chiang Shih
  • Publication number: 20200196815
    Abstract: A vacuum cleaner system includes a docking station and a mobile vacuum cleaner. The docking station includes a charging stand and a parking plate. The parking plate is connected to the charging stand, and formed with two position-limiting slots. The mobile vacuum cleaner includes a working machine body and two transmission wheels. The transmission wheels are rotatably arranged on the working machine body for traveling the working machine body. When the transmission wheels are moved into the position-limiting slots, respectively, the mobile vacuum cleaner presses the parking plate by a gravity of the mobile vacuum cleaner through the two transmission wheels.
    Type: Application
    Filed: March 21, 2019
    Publication date: June 25, 2020
    Applicant: Quanta Computer Inc.
    Inventors: Sheng-An TSAI, Lu-Lung TSAO, Yu-Ching TSAI
  • Patent number: D896620
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: September 22, 2020
    Inventor: Sheng An Tsai