Patents by Inventor Alan Leung

Alan Leung 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: 8959810
    Abstract: A power transfer system to facilitate the transfer of electrical power between tree trunk sections of an artificial tree is disclosed. The power transfer system can advantageously enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections. Power distribution subsystems can be disposed within the trunk sections. The power distribution subsystems can comprise a male end, a female end, or both. The male ends can have prongs and the female ends can have voids. The prongs can be inserted into the voids to electrically connect the power distribution subsystems of neighboring tree trunk sections. In some embodiments, the prongs and voids are designed so that the prongs of one power distribution subsystem can engage the voids of another power distribution subsystem without the need to rotationally align the tree trunk sections.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: February 24, 2015
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Chi Yin Alan Leung, Ricky Tong, Chi Kin Samuel Kwok, Chang-Jun He
  • Patent number: 8955644
    Abstract: A safety system for a swimming pool ladder is described for use in above-ground swimming pools. The safety system can comprise a frame covered with fabric or other enclosure permanently or temporarily affixed to the ladder and/or the sidewall of an above-ground swimming pool. The fabric can comprise a plurality of vent holes to prevent excessive side loads caused by water currents. The safety system can be detachably coupled to the ladder using a tab and slot configuration. The safety system can prevent objects from entering and becoming trapped between the pool sidewall and the pool ladder.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: February 17, 2015
    Assignee: Polygroup Macau Limited (BVI)
    Inventor: Chi Yin Alan Leung
  • Patent number: 8899251
    Abstract: A canopy system comprising a shading element, a support element, and an attachment element member. The canopy system is adapted to provide shade over at least a portion of an above-ground container. The canopy system is configured to maintain its structure during slightly windy and mild weather conditions.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: December 2, 2014
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Chi Yin Alan Leung, Ricky Tong
  • Patent number: 8893099
    Abstract: A system of one or more processors, method, and computer readable storage medium, by which a source program having at least one inner scope is processed by identifying variable names in the source program that are upward referencing and storing the upward referencing variable names with an identifier for the associated scope. A candidate shadow variable in a current scope of the source program is determined from variable names that are not among the identified upward referencing variable names. The determined candidate shadow variable is renamed to a variable name that is in an outer scope relative to the current scope. The source program is stored with the renamed variable. The stored source program can be compressed to a size smaller than the original source program in order to require less bandwidth during transmission over a network.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: November 18, 2014
    Assignee: Google Inc.
    Inventor: Alan Leung
  • Patent number: 8863416
    Abstract: A power transfer system to facilitate the transfer of electrical power between tree trunk sections of an artificial tree is disclosed. The power transfer system can advantageously enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections. Power distribution subsystems can be disposed within the trunk sections. The power distribution subsystems can comprise a male end, a female end, or both. The male ends can have prongs and the female ends can have voids. The prongs can be inserted into the voids to electrically connect the power distribution subsystems of neighboring tree trunk sections. In some embodiments, the prongs and voids are designed so that the prongs of one power distribution subsystem can engage the voids of another power distribution subsystem without the need to rotationally align the tree trunk sections.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: October 21, 2014
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Chi Yin Alan Leung, Ricky Tong, Chi Kin Samuel Kwok, Chang-Jun He
  • Publication number: 20140291472
    Abstract: A system for mounting decorative objects, such as Christmas trees, is disclosed. The system can include a base and a plurality of inserts. The base can comprise a plurality of feet that have a retracted position for ready storage and a deployed position for supporting a tree. The base can further comprise a locking mechanism for locking the feet in the retracted position, the deployed position, or both. The base can further comprise an adapter for receiving one or more inserts. The inserts can comprise a consistent outer diameter, for insertion into the adapter, and a variety of inner diameters for use with a variety of tree diameters. The insert can be installed on the trunk of a tree and then installed into the adapter on the base simplifying the tree erection process.
    Type: Application
    Filed: March 12, 2014
    Publication date: October 2, 2014
    Applicant: Polygroup Macau Limited (BVI)
    Inventor: Chi Yin Alan Leung
  • Publication number: 20140285927
    Abstract: An electrical safety system with an integrated timer is disclosed. The electrical safety system may have an input line connected to an output via one or more communication paths. The electrical safety system may also have a ground fault circuit interrupter module including a sensor coil for monitoring current passing from the input line to the electrical load and producing a current signal and a ground fault circuit interrupter circuit. Further, the electrical safety system may have one or more switches for opening or closing the one or more communication paths between the input line and the output, and a solenoid for operating the one or more switches. Additionally, the electrical safety system may have a timer module comprising a timer circuit configured to generate a timer signal and a selector switch in electrical communication with the timer circuit and a visual display.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 25, 2014
    Applicant: Polygroup Macau Limited (BVI)
    Inventor: Chi Yin Alan Leung
  • Patent number: 8753135
    Abstract: A lamp system used in a light string system comprises a light assembly and a socket assembly. The light assembly comprises a light source, a base in communication with the light source, and a bypass activating system. The socket assembly comprises a socket adapted to receive the light assembly and a bypass mechanism having a first position and a second position. The bypass mechanism is in the first position when the light assembly is not seated in the socket assembly. When the bypass mechanism in the first position, current flows across the bypass mechanism. When the light assembly is inserted into the socket assembly, the bypass activating system of the light assembly moves the bypass mechanism into the second position, and current flows through the light source instead of the bypass mechanism.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 17, 2014
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Chung-Wai (Paul) Cheng, Yong Fu, Chi-Yin (Alan) Leung, Hou-You Han
  • Publication number: 20140087094
    Abstract: A power transfer system to facilitate the transfer of electrical power between tree trunk sections of an artificial tree is disclosed. The power transfer system can advantageously enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections. Power distribution subsystems can be disposed within the trunk sections. The power distribution subsystems can comprise a male end, a female end, or both. The male ends can have prongs and the female ends can have voids. The prongs can be inserted into the voids to electrically connect the power distribution subsystems of neighboring tree trunk sections. In some embodiments, the prongs and voids are designed so that the prongs of one power distribution subsystem can engage the voids of another power distribution subsystem without the need to rotationally align the tree trunk sections.
    Type: Application
    Filed: November 26, 2013
    Publication date: March 27, 2014
    Applicant: POLYGROUP MACAU LIMITED (BVI)
    Inventors: Chi Yin Alan Leung, Ricky Tong, Chi Kin Samuel Kwok, Chang-Jun He
  • Patent number: 8640275
    Abstract: Devices combining swimming pool skimmers, pumps, and removable, disposable filters into integral, sidewall-mounted systems for above-ground pools and other above-ground liquid containment enclosures, and methods for the use of such systems to remove both larger floating debris and smaller particulate matter to maintain water clarity and hygienic safety within such pools or like liquid containment enclosures are disclosed herein. Specifically, a ring-type above-ground pool comprising a base, a sidewall, and at least a portion of a cleaning system solely supported by the sidewall and mounted at a non-vertical angle such that it is substantially parallel to the sidewall.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: February 4, 2014
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Gary Lee Lawson, Chi Yin Alan Leung, Chung Wai (Paul) Cheng
  • Publication number: 20130345646
    Abstract: Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.
    Type: Application
    Filed: March 14, 2013
    Publication date: December 26, 2013
    Applicant: MEDTRONIC XOMED, INC
    Inventors: W. Jeff Bertrand, Lori Speckman, Manfred Karl Luedi, Chun Man Alan Leung, Lawrence Hampton, Deep Shah
  • Publication number: 20130233647
    Abstract: A safety system for a swimming pool ladder is described for use in above-ground swimming pools. The safety system can comprise a frame covered with fabric or other enclosure permanently or temporarily affixed to the ladder and/or the sidewall of an above-ground swimming pool. The fabric can comprise a plurality of vent holes to prevent excessive side loads caused by water currents. The safety system can be detachably coupled to the ladder using a tab and slot configuration. The safety system can prevent objects from entering and becoming trapped between the pool sidewall and the pool ladder.
    Type: Application
    Filed: April 29, 2013
    Publication date: September 12, 2013
    Applicant: Polygroup Macau Limited (BVI)
    Inventor: Chi Yin Alan Leung
  • Patent number: 8469538
    Abstract: The bladder assembly includes a bladder, which includes a seal or passage for dispensing and removing media to inflate the bladder. The bladder includes a housing for holding media and for storing and protecting the light system, and a diffusing mechanism for diffusing and distributing light emitted from the light system throughout the bladder. The diffusing mechanism can extend within the bladder, and the light system can illuminate light in and through the diffusing mechanism. The covering can cover the inflated bladder to provide additional shape and structure to the decorative system.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: June 25, 2013
    Assignee: Polygroup Macau Limited (BVI)
    Inventor: Chi Yin Alan Leung
  • Patent number: 8430205
    Abstract: A safety system for a swimming pool ladder is described for use in above-ground swimming pools. The safety system can comprise a frame covered with fabric or other enclosure permanently or temporarily affixed to the ladder and/or the sidewall of an above-ground swimming pool. The fabric can comprise a plurality of vent holes to prevent excessive side loads caused by water currents. The safety system can be detachably coupled to the ladder using a tab and slot configuration. The safety system can prevent objects from entering and becoming trapped between the pool sidewall and the pool ladder.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: April 30, 2013
    Assignee: Polygroup Macau Limited (BVI)
    Inventor: Chi Yin Alan Leung
  • Publication number: 20130092205
    Abstract: A canopy system comprising a shading element, a support element, and an attachment element member. The canopy system is adapted to provide shade over at least a portion of an above-ground container. The canopy system is configured to maintain its structure during slightly windy and mild weather conditions.
    Type: Application
    Filed: December 5, 2011
    Publication date: April 18, 2013
    Applicant: POLTGROUP MACAU LIMITED (BV)
    Inventors: Chi Yin Alan Leung, Ricky Tong
  • Patent number: 8419455
    Abstract: A lamp system used in a light string system comprises a light assembly and a socket assembly. The light assembly comprises a light source, a base in communication with the light source, and a bypass activating system. The socket assembly comprises a socket adapted to receive the light assembly and a bypass mechanism having a first position and a second position. The bypass mechanism is in the first position when the light assembly is not seated in the socket assembly. When the bypass mechanism in the first position, current flows across the bypass mechanism. When the light assembly is inserted into the socket assembly, the bypass activating system of the light assembly moves the bypass mechanism into the second position, and current flows through the light source instead of the bypass mechanism.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: April 16, 2013
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Chung Wai (Paul) Cheng, Yong Fu, Chi Yin (Alan) Leung, Hou-You Han
  • Publication number: 20120286642
    Abstract: A lamp system used in a light string system comprises a light assembly and a socket assembly. The light assembly comprises a light source, a base in communication with the light source, and a bypass activating system. The socket assembly comprises a socket adapted to receive the light assembly and a bypass mechanism having a first position and a second position. The bypass mechanism is in the first position when the light assembly is not seated in the socket assembly. When the bypass mechanism in the first position, current flows across the bypass mechanism. When the light assembly is inserted into the socket assembly, the bypass activating system of the light assembly moves the bypass mechanism into the second position, and current flows through the light source instead of the bypass mechanism.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 15, 2012
    Applicant: POLYGROUP MACAU LIMITED (BVI)
    Inventors: Chung-Wai (Paul) CHENG, Yong Fu, Chi Yin Alan Leung, Hou-You Han
  • Patent number: 8298168
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element. A reading circuit assembly includes an antenna coil, a sensing coil and a member moveable with respect to the sensing coil, the member configured to alter a resonant frequency of the reading circuit assembly as a function of a position of the member with respect to the sensing coil.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 30, 2012
    Assignee: Medtronic Xomed, Inc.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit
  • Patent number: 8235737
    Abstract: A lamp system used in a light string system comprises a light assembly and a socket assembly. The light assembly comprises a light source, a base in communication with the light source, and a bypass activating system. The socket assembly comprises a socket adapted to receive the light assembly and a bypass mechanism having a first position and a second position. The bypass mechanism is in the first position when the light assembly is not seated in the socket assembly. When the bypass mechanism in the first position, current flows across the bypass mechanism. When the light assembly is inserted into the socket assembly, the bypass activating system of the light assembly moves the bypass mechanism into the second position, and current flows through the light source instead of the bypass mechanism.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: August 7, 2012
    Assignee: Polygroup Macau Limited (BVI)
    Inventors: Chung Wai (Paul) Cheng, Yong Fu, Chi Yin (Alan) Leung, Hou-You Han
  • Publication number: 20120197177
    Abstract: An implantable medical device is disclosed that includes a valve seat and a valve member movable with respect to the valve seat. An adjustment circuit assembly includes a resistive element that is coupled to the valve member and operable to position the valve member relative to the valve seat so as to alter the pressure setting in response to a current applied to the resistive element.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 2, 2012
    Applicant: MEDTRONIC XOMED, INC.
    Inventors: William Jeffrey Bertrand, Robert K. Vaccaro, Chun Man Alan Leung, Michael Ayoub, Pierre Jaquier, Laetitia Mayor, Thomas Junker, Guillaume Schmit