Patents by Inventor Wai Chung Lee

Wai Chung Lee 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: 20230339341
    Abstract: A charging station for use with a robotic tool, the charging station including a core having a first end and a second end, the first end of the core being configured to be supported on a support surface and the core defining a core axis. The charging station also including a charging terminal coupled to the core, where the charging terminal includes a disk-shaped body extending radially outwardly from the core, where the charging terminal includes a lateral plane subdividing the body into a first sub-section and a second sub-section, and where a positive electrode is positioned on an exterior surface of the first sub-section and where a ground electrode is positioned on an exterior surface of the second sub-section.
    Type: Application
    Filed: April 24, 2023
    Publication date: October 26, 2023
    Inventors: Carl Jeffries, Neil McGuinness, Hok Sum Sam Lai, Man Ho Choi, Ho Lam Ng, Shing Hin Li, Wai Chung Lee, Kar Tat Wong, Hei Man LEE
  • Publication number: 20230321738
    Abstract: The present invention provides a hand-held electric tool comprising a housing and an operating component. The housing has a main body section and a grip section extending from the rear side of the main body section, and the front end of the main body section is provided with a mounting interface. The operating component is mounted at the mounting interface of the housing and protrudes from the housing. A chip removal hole is formed in the bottom wall of the main body section of the housing, and a protective portion that extends downwards at least partially is provided at the bottom end at the position where the main body section joins the grip section. The bottom of a hand-held electric tool of the present invention is substantially closed, except for being provided with a chip removal hole, which allows removal of chips while preventing a user's hand from being inadvertently extended into the housing and contacting a component operating at a high speed.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 12, 2023
    Inventors: Jie LI, Zhigang PENG, Hua FAN, Wai Chung LEE, Kar Tat WONG
  • Publication number: 20230151815
    Abstract: A portable power supply device for an electric tool comprises: a power supply receiving portion, provided in or on a housing and used to receive a power supply supplying power to the electric tool, and a control unit, comprising a controller that is provided in the housing and is used to control the electric energy supplied to the electric tool. The power supply receiving portion comprises a power supply compartment, which is at least partially defined by a cover which can move relative to the housing between an opened position and a closed position. The power supply device further comprises a positioning accessory detachably and replaceably attached to the housing and/or the power supply receiving portion.
    Type: Application
    Filed: November 17, 2022
    Publication date: May 18, 2023
    Inventors: Wai Chung LEE, Shao Kang Yang, Zheng Qian Pan, Gerardo Quintanilla Avila
  • Publication number: 20230070541
    Abstract: A submersible pump, comprising: a casing, having accommodated therein a pumping unit and a drive unit for driving the pumping unit; a base, defining a pump inlet; and a float control unit. The float control unit comprises: a float, having at least one magnet; and a float chamber housing, defining a float chamber in which the float is movable up and down. The float chamber has at least one opening which connects the float chamber with an external environment. At least part of the float chamber housing is movably or removably attached to an outer wall of a casing of the submersible pump.
    Type: Application
    Filed: August 31, 2022
    Publication date: March 9, 2023
    Inventors: Gerardo Quintanilla Avila, Wai Chung Lee
  • Publication number: 20230059781
    Abstract: An outdoor surface cleaning apparatus having a handle, a power head with a prime mover, an attachment head having a cleaning attachment, and a spray mechanism. The spray mechanism includes a first fluid input, a second fluid input, a cleaning fluid output, and a mixing assembly. The mixing assembly is in fluid communication with the first fluid input, the second fluid input, and the cleaning solution output.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 23, 2023
    Inventors: Wai Chung LEE, Wai For WONG
  • Publication number: 20230053531
    Abstract: The invention provides a rugged cleaning device configured to clean outdoor surfaces using a variety of fluids and techniques. The outdoor cleaning device includes a brush head, a motor and a transmission for providing a driving force to the brush head, a fluid tank for storing a fluid (e.g., a cleaning solution or detergent), and a controller for controlling mixing (or not mixing) the fluid stored in the fluid tank during operation of the outdoor cleaning device. The controller may enable fluid from the cleaning tank to be mixed with a second fluid (e.g., water) prior to being dispensed via at least one nozzle. The at least one nozzle may be secured to a guard cover via grooves on an inner guard cover and an outer guard cover. The nozzle(s) enables the distribution of cleaning fluids in various directions, enhancing the brush head's cleaning capability.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 23, 2023
    Inventors: WAI CHUNG LEE, Koon For CHUNG, Weiwei AN, Wai For WONG
  • Publication number: 20230055153
    Abstract: The invention provides a rugged cleaning device configured to clean outdoor surfaces using a variety of fluids and techniques. The outdoor cleaning device includes a brush head, a motor and a transmission for providing a driving force to the brush head, a fluid tank for storing a fluid (e.g., a cleaning solution or detergent), and a controller for controlling mixing (or not mixing) the fluid stored in the fluid tank during operation of the outdoor cleaning device. The controller may enable fluid from the cleaning tank to be mixed with a second fluid (e.g., water) prior to being dispensed via a plurality of nozzles. The nozzles may be formed via grooves on an inner cover and an outer cover may be provided to close off the grooves to form fluid channels. The fluid channels enable the distribution of cleaning fluids in various directions, enhancing the brush head's cleaning capability.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 23, 2023
    Inventors: WAI CHUNG LEE, Koon For CHUNG, Weiwei AN, Wai For WONG
  • Publication number: 20220330495
    Abstract: The present invention discloses a blowing-sucking device. The blowing-sucking device comprises a fan and defines a blowing path and a sucking path, and comprises a first housing, a second housing, and at least one air duct, wherein the second housing is provided between the first housing and the at least one air duct, and defines at least part of the blowing path and/or the sucking path, and the second housing is configured to be detachably connected to both the first housing and the at least one air duct. The blowing-sucking device according to one or more embodiments of the present invention is compact in structure and easy to disassemble and assemble. It is easy to inspect, clean, and replace its internal components. The device features operational suitability, flexibility, and convenience.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 20, 2022
    Inventor: Wai Chung Lee
  • Publication number: 20220193692
    Abstract: The present invention discloses a shredding mechanism, a shredding device and a control system and method thereof. The shredding mechanism comprises a shredding component and an adjusting component, wherein the shredding component is used to shred materials, the adjusting component and the shredding component define an operation space for shredding operation, and the adjusting component and the shredding component are configured to be able to move relative to each other so as to change the size of the operation space. The present invention also discloses a shredding device and a control system and method thereof. The shredding mechanism and device according to the present invention feature improved safety, convenience and service life.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 23, 2022
    Inventors: Wai Chung Lee, Koon For Chung, Kun Hao Wu, Xiao Di Lan
  • Publication number: 20220193691
    Abstract: The present invention discloses a shredding device. The shredding device according to one or more embodiments of the present invention comprises: a shredding body for shredding materials; a frame for supporting the shredding body; and a power supply device that provides electric power to the shredding body. The shredding body comprises a housing, and the housing is provided with a power supply chamber for accommodating at least part of the power supply device. The shredding device according to the present invention features a compact structure, and is easy and safe to operate.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 23, 2022
    Inventors: Wai Chung Lee, Koon For Chung, Kun Hao Wu, Xiao Di Lan, Yan Jia Wang
  • Publication number: 20220143802
    Abstract: The utility model discloses a long-rod-type electric tool, comprising: a handle assembly, the handle assembly comprising a power supply unit; a machine head assembly, the machine head assembly comprising a driving unit and an operating unit connected to the driving unit; a long rod assembly, the long rod assembly being arranged between the handle assembly and the machine head assembly; and at least one interface. The long-rod-type electric tool is configured to make an orientation of the operating unit relative to the long rod assembly adjustable in at least one degree of freedom by means of the at least one interface.
    Type: Application
    Filed: November 10, 2021
    Publication date: May 12, 2022
    Inventors: Yan Jia Wang, Wai Chung Lee, Zheng Jun Wang, Jin Cheng Li, Dong Wei Li, Zhi Yang Li, Koon For Chung
  • Publication number: 20170337448
    Abstract: A parking bay monitoring system for electric vehicles includes a main unit for each parking bay, a router being housed in the main unit and connects to a network, at least one digital camera mounted in a position to take digital images of a parking bay, wherein the digital images are transmitted via the router to a central server for analysis by a visual recognition framework to generate a detection result. The system further includes a charging unit, wherein real time data relating to charging is logged and transmitted to the central server, wherein an occupancy status for each parking bay is generated based on the detection result and said data. The system generates a list containing the occupancy status of each parking bay and the said list being accessible by at least one terminal connected to the network.
    Type: Application
    Filed: March 6, 2017
    Publication date: November 23, 2017
    Inventors: Chiu Shing Ng, Wai Chung Lee, Tai Wai Li, Yuen Yee Chung, Shuk Ching Chan
  • Patent number: D516765
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: March 7, 2006
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventor: Wai Chung Lee
  • Patent number: D519699
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: April 25, 2006
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventor: Wai Chung Lee
  • Patent number: D581394
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: November 25, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: David Wai Chung Lee
  • Patent number: D424746
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: May 9, 2000
    Assignee: U.S. Philips Corporation
    Inventor: Wai Chung Lee
  • Patent number: D752023
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: March 22, 2016
    Assignee: GIBSON INNOVATIONS BELGIUM NV
    Inventor: Wai Chung Lee