Patents by Inventor Fee Chan Leung

Fee Chan 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: 8579170
    Abstract: An air breathing battery apparatus is connected to the hollow tubing of a backpack frame to provide an uninterrupted, water-resistant, light-weight power supply during extended remote operations in the field. Air breathing power sources are connected to the hollow tubes of the backpack assembly to provide a constant uninterrupted air supply in a relatively small package that fits easily into the backpack frame with only negligible added weight. The positioning of the air breathing power source in a backpack composed of hollow tubing also protects the battery from inclement weather or when the user is in water, for example, while fording a river or stream, to permit the uninterrupted use of the electronics powered by the battery.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: November 12, 2013
    Assignee: The United States of America, as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 8138950
    Abstract: A programmable parking meter and integrated paging transmitter is provided to warn the parking patron with a pre-violation notice that the parking time is about to expire. The programmable parking meter and integrated paging transmitter includes a rechargeable battery, a flat display that provides programming options and status of parking information to the parking patron, coin slots for use as a conventional coin operated parking meter, an automated teller machine (ATM) style keyboard to activate and program the paging apparatus, and a paging transmitter to interface with existing digital relays and infrastructure for personal communications devices. The invention also includes a method for notifying a remote parking patron that a programmable parking meter and integrated paging transmitter is scheduled to expire.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 20, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 8104653
    Abstract: An air breathing battery apparatus is connected to the hollow tubing of a backpack frame to provide an uninterrupted, water-resistant, light-weight power supply during extended remote operations in the field. Air breathing power sources are connected to the hollow tubes of the backpack assembly to provide a constant uninterrupted air supply in a relatively small package that fits easily into the backpack frame with only negligible added weight. The positioning of the air breathing power source in a backpack composed of hollow tubing also protects the battery from inclement weather or when the user is in water, for example, while fording a river or stream, to permit the uninterrupted use of the electronics powered by the battery.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: January 31, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 7908957
    Abstract: A synchronized ammunition container apparatus and system is provided with a weapon, rotating automatic arm, ammunition container, and rotatable turret base that allows an anti-aircraft weapon, to traverse, depress and elevate in order to engage a rapid, head-on, fly-over target. The synchronized ammunition container apparatus synchronizes the movement and position of the rotating automatic single arm, ammunition container and rotatable turret base to insure that the ammunition belt will not twist, tangle or break when the weapon follows a rapid, head-on, fly-over target. The synchronized ammunition container system and apparatus gives the user increased flexibility for multiple deployment locations and engaging multiple targets from different directions. Other embodiments include a synchronized anti-aircraft ammunition container and combining the apparatus and anti-aircraft weapon into an integrated anti-aircraft defense system with the synchronized ammunition container.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: March 22, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 7325351
    Abstract: A firearm includes a barrel that has a central axis, a receiver fixedly supporting the barrel, and a gunstock that is connected to the receiver and that has a longitudinal axis. The gunstock and the receiver are each configured to provide for angular movement of the gunstock relative to the receiver and, in turn, the barrel whereby the central axis of the barrel varies in a generally radial direction extending from the longitudinal axis of the gunstock. In this way, the firearm may be discharged by a warfighter, standing adjacent to a corner, around the corner.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: February 5, 2008
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 7322142
    Abstract: A firearm includes a barrel that has a central axis, a receiver fixedly supporting the barrel, a gunstock that is connected to the receiver and that has a longitudinal axis and a fore grip connected to the receiver. The gunstock and the receiver are each configured to provide for angular movement of the gunstock relative to the receiver and, in turn, the barrel and wherein the fore grip and the receiver are each configured to provide for angular movement of the fore grip relative to the receiver and, in turn, the barrel whereby the central axis of the barrel varies in a generally radial direction extending from the longitudinal axis of the gunstock. In this way, the firearm may be discharged by a warfighter, standing adjacent to a corner, around the corner.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 29, 2008
    Assignee: The United States of America as represented by the Secretary of the Army.
    Inventor: Fee Chan Leung
  • Patent number: 7322141
    Abstract: A firearm includes a barrel that has a central axis, a receiver fixedly supporting the barrel, a gunstock that is connected to the receiver and that comprises a longitudinal axis, and a shoulder stock extending in a plane that is generally perpendicular to the longitudinal axis of the gunstock. The gunstock and the receiver may each be configured to provide for angular movement of the gunstock relative to the receiver and, in turn, the barrel whereby the central axis of the barrel varies in a generally radial direction extending from the longitudinal axis of the gunstock. In this way, the firearm may be discharged by a warfighter, standing adjacent to a corner, around the corner.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 29, 2008
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 7150667
    Abstract: An individual flotation device includes a shell that has a cavity for receiving air and a housing that is connected to the shell. The housing has a metal air battery compartment that is dimensioned and configured to receive a metal air battery and also has an aperture. The housing may be located on the shell such that the aperture will generally remain above water during use of the flotation device. A membrane that may comprise hydrophobic properties may be located within the aperture of the housing.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: December 19, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 7146762
    Abstract: A close quarter combat butt stock and blade apparatus for an assault weapon is provided with a slideable cover for a close quarters combat assembly having a rear bayonet. The close quarters combat assembly is connected to the concealed rear bayonet, has an interior opening that defines a close combat handle and a hand shield and is positioned behind the first pistol grip and first trigger. A second trigger is also built into the interior opening. In a closed position, the slideable cover covers the close quarters combat assembly and the rear bayonet remains concealed within the butt stock. When the slideable cover is in the open position, the rear bayonet is simultaneously extended rearward permitting the military and law enforcement user to thrust the rear bayonet at an opponent attacking from the rear or side.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: December 12, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 6968642
    Abstract: A bayonet assembly, for a firearm that has a knuckleguard, includes a rail connected to the firearm where the rail comprises a first position detent and a second position detent. The bayonet assembly may also include a bayonet that, in turn, includes a blade and a slide. The slide may be dimensioned and configured to engage the rail and the slide may include a slide catch that is dimensioned and configured to be engageable with the first position detent and the second position detent. In operation, the bayonet may be slid by a hand that is located within the knuckleguard from a remote position, where the slide catch engages the first position detent, to an extended position, where the slide catch engages the second position detent.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: November 29, 2005
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 6948975
    Abstract: In accordance with an embodiment of the present invention, a lantern flashlight power source adaptor, which may be used with a battery that has an electrical socket, includes a member and an electrical plug that is supported by the member. The electrical plug may be dimensioned and configured to be connectable with an electrical socket of a battery and the adaptor may also include at least one terminal connector that is connected in circuit with the electrical plug and that is located on the member.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: September 27, 2005
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Fee Chan Leung, Michael T. Brundage
  • Patent number: 6807763
    Abstract: A close combat butt stock apparatus for an assault weapon is provided with a slideable cover for a close combat butt stock assembly that is positioned behind a first pistol grip and a first trigger of the assault weapon. The close butt stock assembly has an interior opening that defines a close combat handle and a hand shield. A second trigger is also built into the interior opening. With the close combat butt stock apparatus, the military and law enforcement user can now safely and efficiently hold the assault weapon in the bayonet and close quarter combat position with the firing hand holding the close quarter combat handle so that the firing hand is much closer to a second trigger.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: October 26, 2004
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Patent number: 6548205
    Abstract: The battery has two cells of equal voltage (expressed as Volts DC or VDC) and equal electrochemical capacity (expressed as Ampere-Hours or AH). Each cell has one or more hinged and electrically connected modules. Both cells are hinged to each other but are not electrically connected. The modules of the battery can be folded into four basic prismatic shapes and an infinite number of non-prismatic shapes. Each shape is basically two batteries because the equal voltage cells can be connected to the load equipment in electrical series or electrical parallel. An adapter can be connected to the battery to provide additional battery footprints.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: April 15, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Fee Chan Leung, Mary A. Hendrickson
  • Patent number: 6469449
    Abstract: A self-powered cold temperature capable flat panel display is provided to use a heat byproduct from a group of PEM fuel cells to warm the flat panel display of a laptop computer. The self-powered cold temperature capable flat panel display system comprises a flat panel display, a PEM fuel cell assembly, a means for separating the display from the PEM fuel cell assembly and a hydrogen fuel source. A slot is located below the panel and the PEM fuel cell assembly is sufficiently thin to provide adequate space in the slot for the insertion of both the separation means and the PEM fuel cell assembly. Other embodiments include a cold temperature display system and an all-climate panel display and a method for warming a panel display.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: October 22, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Fee Chan Leung, Louis P. Jarvis
  • Patent number: 6464742
    Abstract: An air breathing power source is mounted in a water impervious housing with a hydrophobic membrane across an opening in its top surface. The housing is secured by flexible straps over a users shoulders so that it is normally carried across the users back, but floats up with the air breathing top surface above the water when the user enters water up to and above shoulder level.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: October 15, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Fee Chan Leung, Terrill B. Atwater
  • Patent number: 6461752
    Abstract: The invention is an electric generator comprising a portable electric generator and a thermal electric co-generator. The co-generator converts heat produced by the portable electric generator into electricity. In one embodiment of the present invention, the portable electric generator is a microturbine. In another embodiment, the portable electric generator is a fuel cell. In a further embodiment, the thermal electric generator comprises a hot thermocouple and a cold thermocouple.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: October 8, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Fee Chan Leung
  • Publication number: 20010002298
    Abstract: The battery has two legs of equal voltage (expressed as Volts DC or VDC) and equal electrochemical capacity (expressed as Ampere-Hours or AH). Each leg has one or more hinged and electrically connected modules. Both legs are hinged to each other but are not electrically connected. The modules of the battery can be folded into four basic prismatic shapes and an infinite number of non-prismatic shapes. Each shape is basically two batteries because the equal voltage legs can be connected to the load equipment in electrical series or electrical parallel. An adapter can be connected to the battery to provide additional battery footprints.
    Type: Application
    Filed: January 11, 2001
    Publication date: May 31, 2001
    Inventors: Fee Chan Leung, Mary A. Hendrickson
  • Patent number: 6225785
    Abstract: A voltage is applied to a lithium battery resulting in a constant current charging rate until the lithium battery reaches two hundred and seventy percent of the minimum specified capacity, or until the lithium battery vents, or at a charging rate of three times the specified or rated minimum charging current for a predetermined minimum duration or time. The predetermined minimum duration of time is a function of the lithium battery's rated capacity and the rated or specified charging current. In one embodiment of the present invention, an increased voltage is utilized when testing a lithium battery having more than one cell. The present invention helps to detect lithium battery vents that may fail under use. The present invention is applicable to many military and specialized industrial applications where improper venting of the lithium batteries may result in failure and injury due to risk of fire or exposure of the lithium battery or cell.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: May 1, 2001
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: George Wing Au, Fee Chan Leung
  • Patent number: 6218043
    Abstract: The battery has two legs of equal voltage (expressed as Volts DC or VDC) and equal electrochemical capacity (expressed as Ampere-Hours or AH). Each leg has one or more hinged and electrically connected modules. Both legs are hinged to each other but are not electrically connected. The modules of the battery can be folded into four basic prismatic shapes and an infinite number of non-prismatic shapes. Each shape is basically two batteries because the equal voltage legs can be connected to the load equipment in electrical series or electrical parallel. An adapter can be connected to the battery to provide additional battery footprints.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: April 17, 2001
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Fee Chan Leung, Mary A. Hendrickson