Patents Assigned to Welcome Company, Ltd.
  • Patent number: 6627853
    Abstract: An electric heat sealer for sealing workpieces such as plastic bags or the like includes a casing defining a battery chamber, a press bar pivotally connected to the casing, a sealing mechanism supported on a compression spring in a spring holder inside the casing, and a safety device. The sealing mechanism is electrically connected to produce heat for sealing the workpiece being put thereon when the press bar pressed against the sealing mechanism. The safety device breaks the electrical circuit when the apparatus is not in use.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: September 30, 2003
    Assignee: Welcome Company, Ltd.
    Inventors: Shu Hui Chou, Richard Chang
  • Patent number: 6573477
    Abstract: A safety electric sealer is disclosed for sealing polybags and the like, which includes a first arm body, an electric heating mechanism, a second arm body, and a safety gate. The electric heating mechanism is mounted in a receiving chamber within the first arm body. The safety gate is adapted for closing/opening the receiving chamber of the first arm body, keeping the electric heating mechanism blocked when the safety electric sealer not in action.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: June 3, 2003
    Assignee: Welcome Company Ltd.
    Inventor: Richard Chang
  • Publication number: 20020070206
    Abstract: An electric heat sealer comprising a casing including a first pair of extensions extending outwardly therefrom, a press bar pivotally connected to said casing, the press bar including a second pair of extensions extending outwardly therefrom, at least one sealing mechanism mounted in the press bar or the casing and a source of current for energizing the heating wire. The press bar is normally biased above the casing and the at least one sealing mechanism includes a heating wire.
    Type: Application
    Filed: February 6, 2002
    Publication date: June 13, 2002
    Applicant: Welcome Company Ltd.
    Inventors: Shu-Hui Chou, Richard Chang
  • Patent number: 6335515
    Abstract: An electric heat sealer that has a main body having a longitudinal axis, and a sealing mechanism having a center point. The center point of the sealing mechanism is offset from the longitudinal axis. The electric heat sealer is used for sealing workpieces such as plastic bags or the like and also includes a casing defining a battery chamber and a press bar pivotally connected to the casing. The sealing mechanism is supported on a compression spring in a spring holder inside the casing, and a safety device. The sealing mechanism is electrically connected to produce heat for sealing the workpiece being put thereon when the press bar pressed against the sealing mechanism. The safety device breaks the electrical circuit when the apparatus is not in use.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: January 1, 2002
    Assignee: Welcome Company, Ltd.
    Inventors: Shu Hui Chou, Richard Chang
  • Patent number: 6326594
    Abstract: A handy electric sealer used for sealing a plastic bag or the like, including a casing, a sealing mechanism, a press bar, and safety device. The sealing mechanism has a heating wire, which produces heat for sealing the plastic bag or the like when turned on. The safety device controls the heating of the sealing mechanism, and stops the sealing mechanism from being triggered by an erroneous action.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: December 4, 2001
    Assignee: Welcome Company, Ltd.
    Inventors: Richard Chang, Ammy Chou
  • Patent number: 6064038
    Abstract: An electric sealer including a housing, a heating unit mounted in the housing, a frame having an opening extending over at least a portion of the heating unit and a heat resistant cover sheet extending over at least a portion of the opening in the frame.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: May 16, 2000
    Assignee: Welcome Company, Ltd.
    Inventors: Ammy Chou, Richard Chang, Mario B. Accumanno
  • Patent number: 6040559
    Abstract: An electric heat pen includes a pen base adapted for holding in the hand, a pen head fixedly mounted on one end of the pen base and holding a hot plate on the outside, two plate conductors and an electric heating element between the plate conductors on the inside, and a switch controlled to connect electric power supply to the electric heating element through the plate conductors, causing the electric heating element to produce heat for heating the hot plate for gold-blocking or heat sealing.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: March 21, 2000
    Assignee: Welcome Company, Ltd.
    Inventor: Ammy Chou
  • Patent number: 6032371
    Abstract: A cutting device includes a cutting blade having a cutting edge, and a shell holding the cutting blade on the inside thereof. The shell has an outer edge, and has defined therein a chamber that encompasses at least a portion of the cutting edge of the cutting blade, as well as an insertion slot extending from the chamber to the outer edge of the shell.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: March 7, 2000
    Assignee: Welcome Company Ltd.
    Inventor: Shu Hui Chou
  • Patent number: 5854466
    Abstract: A hand-held electric heat sealing apparatus including a casing, a heat sealing unit and a press handle, wherein a safety switch is mounted in the casing and shifted to stop metal contact plates of the heat sealing unit from contacting the two terminals of a power supply circuit in the casing; the heat sealing unit includes a heat insulative base having a projecting block, an electric heating wire fastened to the projecting block and connected to two opposite metal contact plates of the heat sealing unit, a cover shell covered on the casing over the heat insulative base and having a center opening through which the projecting block of the heat insulative base projects out of the cover shell, a heat insulative sheet covered over the electric heating wire, and a cover frame fastened to the cover shell to hold the heat insulative sheet in place; the casing has a rear chamber, an electric socket in the rear chamber for receiving an electric plug, and an upright stop rod disposed in the rear chamber adapted for hol
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: December 29, 1998
    Assignee: Welcome Company, Ltd.
    Inventor: Ammy Chou
  • Patent number: D365737
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: January 2, 1996
    Assignee: Welcome Company, Ltd.
    Inventors: Shu H. Chou, Heng G. Fang