Patents by Inventor Chan Sik Leung

Chan Sik 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: 6206281
    Abstract: A decorative housing for an object such as calculator has a unique appearance that enhances its functionality. To reduce the desk area of the calculator when not in use, the calculator shrinks in size when in the closed position. The decorative housing opens in an automatic smooth slow motion kinetic deployment when ready to use. It includes a whimsical design with kinetic features that can amuse the user.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: March 27, 2001
    Assignee: CCL Products Enterprises, Inc.
    Inventor: Chan Sik Leung
  • Patent number: 6178085
    Abstract: A calculator which generally possesses a flat, compact and portable housing construction, and which includes a calculator lid mechanism which pivots a flat cover of the calculator in a predetermined controlled manner between a first position causing the flat cover to form a lid which overlies a calculator display, and a second operational position in which the cover is pivoted towards the rear of the calculator so as to form a stand for tilting the calculator into an upwardly inclined ergonomic position relative to a horizontal support surface during intended use thereof.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: January 23, 2001
    Assignee: CCL Products Enterprises, Inc.
    Inventor: Chan Sik Leung
  • Patent number: 6142644
    Abstract: A portable lamp, such as a flashlight or small reading lamp, has a smooth rotatable light bulb portion that rotates evenly from a closed to an open position. The lamp includes a barrel-shaped illuminator within a main housing. The lamp housing is rotatable between a closed lamp-off position and a full-open lamp-on position in a smooth, slow motion movement from the closed to the open, lamp illuminating position. A torsion coil spring urges the lamp housing to rotate into the full-open position. The torsion coil is mounted in a hollow interior of a drum mounted rotatably within a diameter-matching cylinder, which has an inner surface. The drum has a corresponding outer surface in close proximity to the inner surface of the cylinder. The outer surface of the drum has a damper, such as a coating of friction-producing grease, which provides a fluid shear counter force to slow the rotational motion of the lamp housing.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: November 7, 2000
    Inventor: Chan Sik Leung
  • Patent number: 6024215
    Abstract: A portable compact disc carrier is designed to hold a plurality of compact discs. A pair of covers are hinged at a pivot joint on a base bracket, having hollow pins movable therein. Dampening grease is swept on the surface of the pins when they are inserted into integrated cylinder drums on the base bracket. The outer ends of the pins are fixed on the covers. This arrangement restrains the speed of the covers' motion when they are turning open. Two springs are used to pre-load the covers so that they are always in the opening state when they are not hooked up by a latch assembly with a latch button. The button can be turned 90 degrees in the closed state to disable accidental opening of the compact disc carrier. A plurality of disc holding sleeve compartments are also hinged on the base bracket so that they can rotate in a fan-like configuration about an axis parallel to that of the covers. A leaf spring between the disc holders causes half to turn towards one cover and the other half towards the other cover.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: February 15, 2000
    Inventor: Chan Sik Leung
  • Patent number: D437521
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: February 13, 2001
    Inventor: Chan Sik Leung
  • Patent number: D413811
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: September 14, 1999
    Assignee: CCL Products Enterprises, Inc.
    Inventor: Chan Sik Leung
  • Patent number: D415585
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: October 19, 1999
    Assignee: CCL Products Enterprises, Inc.
    Inventor: Chan Sik Leung
  • Patent number: D422300
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: April 4, 2000
    Inventor: Chan Sik Leung
  • Patent number: D424604
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: May 9, 2000
    Assignee: CCL Products Enterprises, Inc.
    Inventor: Chan Sik Leung