Patents Assigned to J.T. Labs, Ltd.
  • Patent number: 7172721
    Abstract: The invention provides a novel thermoplastic molding process useful in the manufacture of hollow, deformable thermoplastic articles such as hollow doll heads. In the process of the instant invention, a parison is formed at a first injection station and is transferred to a blow mold station. At the blow mold station, the parison is transformed into a hollow, deformable thermoplastic article through application of a vacuum and gas injection. Articles made by the process of the instant invention have a highly realistic appearance and texture.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: February 6, 2007
    Assignee: J.T. Labs, Ltd.
    Inventor: Tit Shing Wong
  • Patent number: 6916032
    Abstract: The invention provides a propulsion, braking and anti-rollback control assembly for use in manually propelled vehicles such as wheelchairs. In one embodiment, the invention provides a wheelchair with a control lever assembly and related force conveyance connecter that propel, brake and steer the wheelchair in a mechanically advantageous way while minimizing rollback. A seat-activated auxiliary braking system is also provided. Additionally, the invention provides a selective anti-rollback disengagement system that facilitates selective rollback.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: July 12, 2005
    Assignee: J.T. Labs, Ltd.
    Inventor: Sui-Kay Wong
  • Patent number: 6848965
    Abstract: The instant invention relates to an animation actuator and devices employing such an animation actuator. Actuators and devices of the invention are useful in animated entertainment devices. In one embodiment of the instant invention, the actuators are used in connection with an animated greeting card.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: February 1, 2005
    Assignee: J.T. Labs, Ltd.
    Inventor: Sui-Kay Wong