Patents Assigned to Heep Tung Manufactory Limited
  • Patent number: 5645038
    Abstract: The invention provides a toy dart having a elongate body which comprises a front end in the form of a suction cup, an intermediate portion and a tubular rear end which is hollow and of an enlarged cross-section and preferably also a heavier weight. The invention also provides a toy gun for launching this toy dart, which comprises a body and an air pressurising mechanism provided by a piston and a cylinder inside the body for launching the toy dart. The cylinder has a tubular opening end over and around which the hollow rear end of the toy dart is to be fitted for launching. More specifically, the tubular end is provided by a tube which is removable to reveal another opening of the cylinder for the insertion of a conventional suction-cup toy dart having a plain shaft to be hit at a rear end by the piston.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: July 8, 1997
    Assignee: Heep Tung Manufactory Limited
    Inventor: Ka Shiu Luk
  • Patent number: 5605253
    Abstract: A water-ejection toy comprising a body having a front end, a nozzle unit provided at the front end of the body, a reservoir provided inside the body for containing water, and a pump assembly supported by the body for delivering water from the reservoir to the nozzle unit for discharge through the nozzle unit. The nozzle unit has a housing including a tubular front end and an apertured cap fit co-axially over the tubular front end through screw-thread engagement. The nozzle unit is adapted to provide a dispersed discharge of water upon tightening of the cap and a concentrated discharge of water upon loosening of the cap.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: February 25, 1997
    Assignee: Heep Tung Manufactory Limited
    Inventor: Ka-Shiu Luk
  • Patent number: 4492318
    Abstract: A jet of water is emitted in known toy water pistols through the muzzle of the barrel, and accordingly people thus know as to who is a potential target by simply observing the direction the gun is pointed. A toy water pistol in accordance with the invention comprises a hollow body in the shape of a gun having a simulated muzzle through which it can be assumed that a jet of water will issue. Mounted above the gun barrel is the actual water outlet which is formed in the cylindrical wall of a round knob like member mounted so as to be capable of rotation through 360.degree. whereby the user can turn the knob to place the outlet in any desired or arbitrary orientation relative the barrel and simulated muzzle, so that in use a jet of water is emitted in a direction which is not obvious to people who are potential targets.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: January 8, 1985
    Assignee: Heep Tung Manufactory Limited
    Inventor: Ka-Shiu Luk
  • Patent number: D389884
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: January 27, 1998
    Assignee: Heep Tung Manufactory Limited
    Inventor: Ka-Shiu Luk
  • Patent number: D410048
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: May 18, 1999
    Assignee: Heep Tung Manufactory Limited
    Inventor: Ka-Shiu Luk