Patents by Inventor Chen Yuen To

Chen Yuen To 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: 9522561
    Abstract: A ring binder mechanism for holding loose-leaf pages has a housing and rings movable between closed and open positions. The rings are mounted on hinge plates supported by the housing for pivoting movement relative to the housing. An actuator is moveable relative to the housing to pivot the hinge plates to move the rings between the closed and open positions. A travel bar operatively connected to the actuator includes a locking element. The travel bar is moveable between a locked position in which the locking element blocks pivoting of the hinge plates and an unlocked position in which the locking element permits pivoting of the hinge plates. The travel bar and housing each include a retaining formation. The retaining formation on the housing is adapted to contact the retaining formation on the travel bar to releasably hold the travel bar in the locked position when the rings are closed.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: December 20, 2016
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chen Yuen To
  • Publication number: 20150104237
    Abstract: A ring binder mechanism for retaining loose-leaf pages includes an elongate housing, a first and second hinge plate, at least one ring for holding the loose-leaf pages, and an actuator mounted on the housing. Each ring includes a first ring member and a second ring member. The first ring member is mounted on the first hinge plate for movement with the hinge plate relative to the housing between a closed position and an opened position. The first hinge plate has a first hinge member and the second hinge plate has a second hinge member. The hinge members are disposed at a distance from the mid-plane that is the same as or less than the greatest distance between the upper surface and the mid-plane. An actuator is mounted on the housing for pivotal movement relative to the housing for moving the rings from their closed position to their opened position.
    Type: Application
    Filed: July 17, 2014
    Publication date: April 16, 2015
    Inventor: Chen Yuen To
  • Publication number: 20150063896
    Abstract: A ring binder mechanism for holding loose-leaf pages has a housing and rings movable between closed and open positions. The rings are mounted on hinge plates supported by the housing for pivoting movement relative to the housing. An actuator is moveable relative to the housing to pivot the hinge plates to move the rings between the closed and open positions. A travel bar operatively connected to the actuator includes a locking element. The travel bar is moveable between a locked position in which the locking element blocks pivoting of the hinge plates and an unlocked position in which the locking element permits pivoting of the hinge plates. The travel bar and housing each include a retaining formation. The retaining formation on the housing is adapted to contact the retaining formation on the travel bar to releasably hold the travel bar in the locked position when the rings are closed.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Inventor: Chen Yuen To