Patents Assigned to Welcome Co., Ltd.
  • Patent number: 10683115
    Abstract: A portable air extracting device includes a shell assembly and an electric air extracting pump. The shell assembly includes a top shell, a side shell and a bottom shell surrounding a fluid room. The bottom shell is provided with an external air-extracting hole. The external air-extracting hole connects the fluid room to a target space to be evacuated. The electric air extracting pump includes an intake nozzle and an outtake nozzle. In particular, the intake nozzle is misaligned with the external air-extracting hole.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: June 16, 2020
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang
  • Patent number: 9937661
    Abstract: A storage electric sealer comprises a casing, a sealing module, a spring switch, a support cover, a press bar, and a sliding plate. The casing and the sealing module are arranged on the casing. The support cover includes at least two containing grooves. The press bar provided with a sliding chute is pivotally connected with the pivoting holder of the casing. The sliding plate is provided with a heat insulation block and at least a stopper, both lateral side of the sliding plate being connected with the sliding chute of the press bar in a sliding manner. Wherein, the sliding plate is located at a closed position in storage state, so that the stopper is accommodated in the containing groove of the support cover. As such, the storage electric sealer can be transformed into a storage state by a modified sliding mechanism to reduce the volume and damage rate effectively.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: April 10, 2018
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang
  • Patent number: 9809340
    Abstract: A rechargeable sealer with storage function includes a casing, an electric heating module, a circuit board, a supporting base, a press bar, a spring-back mechanism, and a sliding plate. The casing is provided with an accommodating chamber, in which are provided with a fore contact element and a rear contact element. A rechargeable battery is positioned in and between the fore contact element and the rear contact element. The circuit board, provided with an external slot, is disposed in the accommodating chamber, featured in charging the rechargeable battery. The press bar is provided with a sliding slot, and is pivotally connected with the pivoting shaft of the supporting base, served as a pressing structure corresponding to the casing.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 7, 2017
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang
  • 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: 7315010
    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: August 29, 2005
    Date of Patent: January 1, 2008
    Assignee: WELCOME Co., Ltd.
    Inventors: Shu Hui Chou, Richard Chang
  • 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: 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
  • Patent number: D812662
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: March 13, 2018
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang
  • Patent number: D823913
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: July 24, 2018
    Assignee: WELCOME CO., LTD.
    Inventors: Ammy Chou, Richard Chang
  • Patent number: D823914
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 24, 2018
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang
  • Patent number: D845370
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: April 9, 2019
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang
  • Patent number: D860277
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: September 17, 2019
    Assignee: WELCOME CO., LTD.
    Inventor: Richard Chang