Patents Assigned to Welcom Co., Ltd.
  • Patent number: 7700897
    Abstract: A hand-held electric sealer having a detachable sealing module, comprises a casing having a module chamber located at the front end of the casing and a battery chamber beside the module chamber, a sealing module unitarily attached to or detached from the module chamber, and a press bar pivotally fixed at the rear end of the casing. Also disclosed is a detachable sealing module for use with the hand-held electric sealer, comprising a module cover plate and a module seat plate which form an accommodating space for receiving a heating mechanism, where the top portion of the heating mechanism protrudes from the module cover plate upon being biased by a spring secured in the module seat plate.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: April 20, 2010
    Assignee: Welcome Co., Ltd.
    Inventors: Ammy Chou, Richard Chang
  • Patent number: 7464845
    Abstract: A hand-held staple gun comprises a housing, a driver, a spring means, a handle, and a safe actuation mechanism. The safe actuation mechanism includes a swing means, a link, and an actuation control rod. The swing means is pivotally secured to the housing and the link is pivotally connected with the swing means. When the staple gun is not in use, the link cannot engage the driver even if the handle is pressed down, and when the staple gun is in use, the actuation control rod is pressed upward into the housing, so that the actuation control rod pushes the swing means, making the link engage the driver and therefore possible to drive staples out of the staple gun when pressing down of the handle.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: December 16, 2008
    Assignee: Welcome Co., Ltd.
    Inventor: Ammy Chou
  • Patent number: 7291810
    Abstract: A hand-held electric sealer used for sealing a plastic bag or the like, including a casing, a sealing mechanism, a press bar, and a 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 accidentally.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: November 6, 2007
    Assignee: Welcome Co., Ltd.
    Inventors: Richard Chang, Ammy Chou
  • Publication number: 20070145094
    Abstract: A hand-held staple gun comprises a housing, a driver, a spring means, a handle, and a safe actuation mechanism. The safe actuation mechanism includes a swing means, a link, and an actuation control rod. The swing means is pivotally secured to the housing and the link is pivotally connected with the swing means. When the staple gun is not in use, the link cannot engage the driver even if the handle is pressed down, and when the staple gun is in use, the actuation control rod is pressed upward into the housing, so that the actuation control rod pushes the swing means, making the link engage the driver and therefore possible to drive staples out of the staple gun when pressing down of the handle.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 28, 2007
    Applicant: Welcom Co., Ltd.
    Inventor: Ammy Chou
  • Publication number: 20060231211
    Abstract: A hand-held electric sealer having a detachable sealing module, comprises a casing having a module chamber located at the front end of the casing and a battery chamber beside the module chamber, a sealing module unitarily attached to or detached from the module chamber, and a press bar pivotally fixed at the rear end of the casing. Also disclosed is a detachable sealing module for use with the hand-held electric sealer, comprising a module cover plate and a module seat plate which form an accommodating space for receiving a heating mechanism, where the top portion of the heating mechanism protrudes from the module cover plate upon being biased by a spring secured in the module seat plate.
    Type: Application
    Filed: March 2, 2006
    Publication date: October 19, 2006
    Applicant: Welcome Co., Ltd.
    Inventors: Ammy Chou, Richard Chang
  • Publication number: 20060113292
    Abstract: An electric heat sealer including a casing having a first pair of extensions extending outwardly therefrom, a press bar pivotally connected to said casing, the press bar having 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: January 11, 2006
    Publication date: June 1, 2006
    Applicant: Welcome Co., Ltd.
    Inventors: Shu-Hui Chou, Richard Chang
  • Patent number: 7034252
    Abstract: A hand-held electric sealer used for sealing a plastic bag or the like, including a casing, a sealing mechanism, a press bar, and a 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 accidentally.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: April 25, 2006
    Assignee: Welcome Co., Ltd.
    Inventors: Richard Chang, Ammy Chou
  • Patent number: 6998577
    Abstract: An electric heat sealer including a casing having a first pair of extensions extending outwardly therefrom, a press bar pivotally connected to said casing, the press bar having 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: Grant
    Filed: July 9, 2004
    Date of Patent: February 14, 2006
    Assignee: Welcome Co., Ltd.
    Inventors: Shu Hui Chou, Richard Chang
  • Patent number: 6919537
    Abstract: An electric heat sealer is constructed to include two pivoted arms of substantially T-shaped profile and an electric heating mechanism in one of the arms, each arm having a handhold portion through which the user can hold the electric heat sealer with the left hand or the right hand as desired to directly seal the workpiece with the electric heat sealer, or to operate the electric heat sealer on a worktable when sealing the workpiece. An operation case is selectively used with the electric heat sealer for protection.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: July 19, 2005
    Assignee: Welcome Co., Ltd.
    Inventor: Richard Chang
  • Patent number: 6770849
    Abstract: An electric heat sealer having 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; wherein the at least one sealing mechanism including a heating wire. The press bar is normally biased above the casing, which includes a source of current for energizing the heating wire.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: August 3, 2004
    Assignee: Welcome Co., Ltd.
    Inventors: Shu-Hui Chou, Richard Chang
  • Publication number: 20040144766
    Abstract: An electric heat sealer is constructed to include two pivoted arms of substantially T-shaped profile and an electric heating mechanism in one of the arms, each arm having a handhold portion through which the user can hold the electric heat sealer with the left hand or the right hand as desired to directly seal the workpiece with the electric heat sealer, or to operate the electric heat sealer on a worktable when sealing the workpiece. An operation case is selectively used with the electric heat sealer for protection.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 29, 2004
    Applicant: Welcome Co., Ltd.
    Inventor: Richard Chang
  • Patent number: 6630647
    Abstract: A hand-held electric sealer used for sealing a plastic bag or the like, including a casing, a sealing mechanism, a press bar, and a 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 accidentally.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: October 7, 2003
    Assignee: Welcome Co., Ltd.
    Inventors: Richard Chang, Ammy Chou
  • Publication number: 20030019861
    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: Application
    Filed: December 12, 2000
    Publication date: January 30, 2003
    Applicant: Welcome Co., Ltd.
    Inventors: Shu Hui Chou, Richard Chang
  • Publication number: 20020185484
    Abstract: A hand-held electric sealer used for sealing a plastic bag or the like, including a casing, a sealing mechanism, a press bar, and a 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 accidentally.
    Type: Application
    Filed: July 24, 2002
    Publication date: December 12, 2002
    Applicant: Welcome Co., Ltd.
    Inventors: Richard Chang, Ammy Chou
  • Patent number: 6232579
    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: November 9, 1998
    Date of Patent: May 15, 2001
    Assignee: Welcome Co., Ltd.
    Inventors: Shu Hui Chou, Richard Chang
  • Publication number: 20010000608
    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 means. The sealing mechanism has a heating wire, which produces heat for sealing the plastic bag or the like when turned on. The safety means controls the heating of the sealing mechanism, and stops the sealing mechanism from being triggered by an erroneous action.
    Type: Application
    Filed: December 18, 2000
    Publication date: May 3, 2001
    Applicant: Welcome Co., Ltd.
    Inventors: Richard Chang, Ammy Chou