Patents by Inventor Hing Wai Michael Ma

Hing Wai Michael Ma 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: 10181671
    Abstract: A foldable plug device includes a pin module having at least one fixed pin. A first articulating shaft is disposed in a bottom of the pin module, and a first casing and a second casing are disposed at two sides of the pin module. A slot is disposed in a middle portion of the first casing. A movable pin corresponding to the fixed pin is disposed at the second casing, and the movable pin is configured such that the movable pin is located in the slot when the two casings are folded, and the movable pin is turned out of the slot when the two casings are unfolded, to form a plug cooperating with the fixed pins.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: January 15, 2019
    Assignee: Cord-It Limited
    Inventor: Hing Wai Michael Ma
  • Publication number: 20180109046
    Abstract: A fuse structure for a plug device is disposed in a body of the plug device and configured to be electrically connected to a plug circuit of the plug device. The plug device includes at least one casing for exposing a pin, in which an assembly chamber for a fuse and a cover are disposed below the casing. A horizontal slot for the fuse is disposed in the fuse assembly chamber, and the cover is configured cover the assembly chamber for the fuse. A pivot shaft of the cover is disposed adjacent to an articulating shaft of the casing, and the cover is prevented from being opened by the casing when the casing is unfolded.
    Type: Application
    Filed: October 8, 2015
    Publication date: April 19, 2018
    Inventor: Hing Wai Michael Ma
  • Publication number: 20170338580
    Abstract: A foldable plug device includes a pin module having at least one fixed pin. A first articulating shaft is disposed in a bottom of the pin module, and a first casing and a second casing are disposed at two sides of the pin module. A slot is disposed in a middle portion of the first casing. A movable pin corresponding to the fixed pin is disposed at the second casing, and the movable pin is configured such that the movable pin is located in the slot when the two casings are folded, and the movable pin is turned out of the slot when the two casings are unfolded, to form a plug cooperating with the fixed pins.
    Type: Application
    Filed: October 8, 2015
    Publication date: November 23, 2017
    Applicant: Cord-It Limited
    Inventor: Hing Wai Michael Ma
  • Patent number: 9577395
    Abstract: A universal socket device comprises a plurality of sockets arranged in one interface panel, and transformer circuits disposed inside a body. The interface panel is arranged on top of the body, while a male connector is arranged on the lower side of the body adapted to connect to the output power. The male connector includes a plug with 8-shaped cross sections, arranged along the outside wall of the body in parallel. The base of the plug is disposed on a bulge protruding from the body, and a plane is arranged on the outer surface of the bulge, where a groove extends following the same direction of the plug. Due to the male connector structure disposed on the lower side of the body, the center of gravity of the socket device is stabilized, and the socket device is easy to plug and use.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: February 21, 2017
    Assignee: Cord-It Limited
    Inventor: Hing Wai Michael Ma
  • Patent number: 9190760
    Abstract: A plug structure for connecting sockets comprises at least one jack formed at a side of a first socket; and a plug rod disposed on a second socket corresponding to the at least one jack and configured to plug in the at least one jack. The plug rod is electrically contacted with a spring piece in the jack so as to electrify the second socket. A slidable baffle plate is disposed on an inner side of the at least one jack and is configured to cover the jack. A through hole corresponding to the jack is formed in the baffle plate. A slope configured to push the baffle plate is disposed at a position on the baffle plate corresponding to the jack, and is disposed at an edge of the through hole and fitted with the plug rod to push the baffle plate to be inserted into the through hole. The plug structure for connecting sockets according to the present disclosure provides an improvement for a security protection of combined interfaces of the sockets, thus ensuring a security of the combined sockets.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: November 17, 2015
    Assignee: PowerCubic International Limited
    Inventor: Hing Wai Michael Ma
  • Publication number: 20150325968
    Abstract: A universal socket device comprises a plurality of sockets arranged in one interface panel, and transformer circuits disposed inside a body. The interface panel is arranged on top of the body, while a male connector is arranged on the lower side of the body adapted to connect to the output power. The male connector includes a plug with 8-shaped cross sections, arranged along the outside wall of the body in parallel. The base of the plug is disposed on a bulge protruding from the body, and a plane is arranged on the outer surface of the bulge, where a groove extends following the same direction of the plug. Due to the male connector structure disposed on the lower side of the body, the center of gravity of the socket device is stabilized, and the socket device is easy to plug and use.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 12, 2015
    Inventor: Hing Wai Michael Ma
  • Publication number: 20150099381
    Abstract: A plug structure for connecting sockets comprises at least one jack formed at a side of a first socket; and a plug rod disposed on a second socket corresponding to the at least one jack and configured to plug in the at least one jack. The plug rod is electrically contacted with a spring piece in the jack so as to electrify the second socket. A slidable baffle plate is disposed on an inner side of the at least one jack and is configured to cover the jack. A through hole corresponding to the jack is formed in the baffle plate. A slope configured to push the baffle plate is disposed at a position on the baffle plate corresponding to the jack, and is disposed at an edge of the through hole and fitted with the plug rod to push the baffle plate to be inserted into the through hole. The plug structure for connecting sockets according to the present disclosure provides an improvement for a security protection of combined interfaces of the sockets, thus ensuring a security of the combined sockets.
    Type: Application
    Filed: August 6, 2014
    Publication date: April 9, 2015
    Inventor: Hing Wai Michael Ma
  • Patent number: 7753700
    Abstract: A safety protection structure for universal sockets, comprising: a second module; a second slant to contact the second pin of a 3-pin plug; a sliding chute configured in parallel to the movement direction of the second module; a third module; a third slant to contact the third pin of a 3-pin plug, and matching the sliding chute of the second module. The sliding chute is configured to ensure that the third and the second module are relatively independent and movable. The second module and third module are respectively configured with a surface area to block the second pin and third pin of the 3-pin plug at the same time. In this configuration, the insulation board is closed when the pin of the plug is inserted incorrectly preventing the pin from contacting the conducting plate in the socket, and the insulation boards in the jacks not inserted with the pins remain closed.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: July 13, 2010
    Assignee: Cord-It Limited
    Inventor: Hing Wai Michael Ma
  • Publication number: 20100093198
    Abstract: A safety protection structure for universal sockets, comprising: a second module; a second slant to contact the second pin of a 3-pin plug; a sliding chute configured in parallel to the movement direction of the second module; a third module; a third slant to contact the third pin of a 3-pin plug, and matching the sliding chute of the second module. The sliding chute is configured to ensure that the third and the second module are relatively independent and movable. The second module and third module are respectively configured with a surface area to block the second pin and third pin of the 3-pin plug at the same time. In this configuration, the insulation board is closed when the pin of the plug is inserted incorrectly preventing the pin from contacting the conducting plate in the socket, and the insulation boards in the jacks not inserted with the pins remain closed.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 15, 2010
    Inventor: Hing Wai Michael Ma
  • Patent number: 7661992
    Abstract: A safe power plugging mechanism is configured on a power base with a pivot joint, wherein a male plug with conducting plates at its inside is configured on the pivot joint and is electrically connected with the pivot joint. A half-tile-shaped insulating tile configured outside the pivot joint axis is integral with the enclosure of the male plug, and partly encloses the pivot joint axis. A power connection plate is configured inside the power base to electrically connect the conducting plates of the male plug when the male plug is turned to a specific angle. The safe plugging mechanism also includes a female plug, which is configured at its inside with two conducting poles fitting the conducting plates of the male plug. The safe power plugging mechanism adopts a method of electric connection through a pivot joint axis which maintains connection at a specific angle and insulation at other angles.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: February 16, 2010
    Assignee: Cord-It Limited
    Inventor: Hing Wai Michael Ma
  • Patent number: D674381
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: January 15, 2013
    Assignee: Cord-It Limited
    Inventor: Hing Wai Michael Ma