Patents by Inventor Wing Kin Chan

Wing Kin Chan 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: 5628123
    Abstract: An attachment for a hair dryer is disclosed of the type that requires a source of power, for example a massaging apparatus or an infra-red radiation heater. Rather than provide the attachment with its own power source, the attachment is formed with a terminal that allows it to be connected to the power supply circuit of a suitably adapted hair dryer.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: May 13, 1997
    Assignee: China Pacific Trade Ltd.
    Inventor: Wing-Kin Chan
  • Patent number: 5513665
    Abstract: Hair curling apparatus comprises a curling iron that can be inserted in a curling roller. The curling iron has a shaft for insertion in the roller formed by a number of elongate plate-like members, and the interior surface of the roller is formed with corresponding slots for receiving the edges of the plate-like members. Thus the curling iron may be easily located and secured within the roller. In another embodiment the curling iron is provided with a projection in an end face of the handle, the projection being received within a corresponding aperture formed in an end member of the roller.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: May 7, 1996
    Assignee: China Pacific Trade Limited
    Inventor: Wing-Kin Chan
  • Patent number: 5494058
    Abstract: A hair curling iron comprises an air heater and a blower disposed in a handle portion and a steam generator disposed in a barrel extending from the handle portion. The steam generator includes a water carrying member and a heating element. The barrel includes apertures for heated air and steam. The water carrying member is movable axially in the barrel to contact an end of the heating element. The curling iron may be used in conjunction with a metal roller having a metal roller body and a pair of plastic end pieces.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: February 27, 1996
    Assignee: China Pacific Trade Ltd.
    Inventor: Wing-Kin Chan
  • Patent number: 5303483
    Abstract: An air diffuser for attachment to a handheld hairdryer includes a diffuser neck and an angled diffuser head. The diffuser neck is provided with air vents. If a back pressure builds up in the diffuser with a consequent risk of overheating the hairdryer, then air escapes through the vents relieving the back pressure. In the absence of a back pressure substantially all of the air flows along the diffuser and out through the mouth of the diffuser.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: April 19, 1994
    Assignee: China Pacific Trade Limited
    Inventor: Wing-Kin Chan
  • Patent number: 5287635
    Abstract: An air diffuser for attachment to a handheld hairdryer includes a diffuser neck and an angled diffuser head. The diffuser neck is provided with air vents. If a back pressure builds up in the diffuser with a consequent risk of overheating the hairdryer, then air escapes through the vents relieving the back pressure. In the absence of a back pressure substantially all of the air flows along the diffuser and out through the mouth of the diffuser.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: February 22, 1994
    Assignee: China Pacific Trade Limited
    Inventor: Wing-Kin Chan