Patents by Inventor Chun Yuen To

Chun 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).

  • Publication number: 20200197141
    Abstract: A dental cleaning tool includes a handle defining a longitudinal axis. The handle has a first end and an opposing second end. The handle includes a first arm and a second arm defining a storage gap therebetween. The dental cleaning tool also includes a first cleaning instrument attached to the first end of the handle and a second cleaning instrument at the second end of the handle. The second cleaning instrument is positionable relative to the handle between a stowed position in which the second cleaning instrument is positioned in the storage gap between the first and second arms and an operable position in which the second cleaning instrument extends beyond the second end of the handle.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 25, 2020
    Inventor: Chun Yuen TO
  • Patent number: 10610338
    Abstract: A dental cleaning tool includes a body portion and a secondary cleaning tool. The body portion includes a floss assembly, a handle, a receiving slot, and a shield. The floss assembly includes a first arm, a second arm, and a bridge segment. The first arm and the second arm extend from the bridge segment. The handle is coupled to the floss assembly and extends from the floss assembly. The receiving slot is formed in the handle. The shield is formed on the handle and is configured to cover the receiving slot such that access to the receiving slot is restricted. The secondary cleaning tool is coupled to the bridge segment and is pivotable relative to the bridge segment in at least two degrees of freedom such that the secondary cleaning tool is insertable into the receiving slot from a second direction different than the first direction.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: April 7, 2020
    Assignee: World Wide Daily Holdings Company Limited
    Inventor: Chun Yuen To
  • Publication number: 20200030066
    Abstract: A dental cleaning tool includes a handle defining a longitudinal axis of the tool. The handle includes a floss holder having a base and two arms extending from the base in perpendicular relation to the longitudinal axis, at least one strand of floss extending between the two arms, and a toothpick being formed as one piece with the handle and having a pointed tip, the toothpick being spaced from the floss holder such that the handle is disposed between the toothpick and the floss holder. The dental cleaning tool further includes at least one rotatable dental tool formed separately from and attached to the handle, the at least one rotatable dental tool being rotatably mounted to the handle between a first, stow position and a second, use position.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 30, 2020
    Applicant: World Wide Daily Holdings Company Limited
    Inventor: Chun Yuen TO
  • Patent number: 10376346
    Abstract: A dental cleaning tool includes a body portion defining a longitudinal axis of the dental cleaning tool. The body portion includes a floss assembly including a first arm and a second arm extending substantially perpendicularly relative to the longitudinal axis, a receiving slot formed in the first arm, and a shield formed on the first arm. The shield is configured to cover the receiving slot such that access to the receiving slot is restricted from a first direction. The tool also includes a secondary cleaning tool coupled to the first arm. The secondary cleaning tool is pivotable relative to the first arm in at least two degrees of freedom such that the secondary cleaning tool is insertable into the receiving slot from a second direction different than the first direction.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: August 13, 2019
    Assignee: World Wide Daily Holdings Company Limited
    Inventor: Chun Yuen To
  • Publication number: 20190239990
    Abstract: A dental cleaning tool includes a body portion and a secondary cleaning tool. The body portion includes a floss assembly, a handle, a receiving slot, and a shield. The floss assembly includes a first arm, a second arm, and a bridge segment. The first arm and the second arm extend from the bridge segment. The handle is coupled to the floss assembly and extends from the floss assembly. The receiving slot is formed in the handle. The shield is formed on the handle and is configured to cover the receiving slot such that access to the receiving slot is restricted. The secondary cleaning tool is coupled to the bridge segment and is pivotable relative to the bridge segment in at least two degrees of freedom such that the secondary cleaning tool is insertable into the receiving slot from a second direction different than the first direction.
    Type: Application
    Filed: October 3, 2018
    Publication date: August 8, 2019
    Inventor: Chun Yuen TO
  • Publication number: 20190209277
    Abstract: A dental cleaning tool includes a handle defining a longitudinal axis of the tool, a floss holder a floss holder having a base and two arms extending from the base in perpendicular relation to the longitudinal axis, at least one strand of floss extending between the two arms, and a pivotable brush attached to the floss holder. The pivotable brush includes a rod and bristles disposed on the rod. The rod is pivotably mounted to the floss holder between a first, stowed position and a second, use position.
    Type: Application
    Filed: September 9, 2016
    Publication date: July 11, 2019
    Applicant: World Wide Daily Holdings Company Limited
    Inventor: Chun Yuen TO
  • Publication number: 20190105138
    Abstract: A dental cleaning tool includes a handle defining a longitudinal axis of the dental cleaning tool and a floss holder having at least one strand of floss coupled thereto. The dental cleaning tool also includes a toothpick formed as one piece with the handle and spaced from the floss holder such that the handle is disposed between the toothpick and the floss holder. The dental cleaning tool further includes a pivotable dental tool pivotably coupled to the handle. The pivotable dental tool is selectively transitionable between a first, stow position and a second, use position.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 11, 2019
    Inventor: Chun Yuen TO
  • Publication number: 20190083213
    Abstract: A dental cleaning tool includes a body portion defining a longitudinal axis of the dental cleaning tool. The body portion includes a floss assembly including a first arm and a second arm extending substantially perpendicularly relative to the longitudinal axis, a receiving slot formed in the first arm, and a shield formed on the first arm. The shield is configured to cover the receiving slot such that access to the receiving slot is restricted from a first direction. The tool also includes a secondary cleaning tool coupled to the first arm. The secondary cleaning tool is pivotable relative to the first arm in at least two degrees of freedom such that the secondary cleaning tool is insertable into the receiving slot from a second direction different than the first direction.
    Type: Application
    Filed: August 3, 2018
    Publication date: March 21, 2019
    Inventor: Chun Yuen TO
  • Publication number: 20190082821
    Abstract: A dental cleaning tool includes a body portion defining a longitudinal axis of the dental cleaning tool. The body portion extends from a first end to a second end along the longitudinal axis. The body portion includes a floss assembly formed at the first end of the body portion, a toothpick member formed at the second end of the body portion, and a handle portion extending between the floss assembly and the toothpick member. The handle portion includes a receptacle. The tool further includes at least one secondary cleaning tool coupled to the body portion. The at least one secondary cleaning tool is rotatable relative to the body portion for selectively positioning the at least one secondary cleaning tool between a stowed position, within the receptacle, and a deployed position.
    Type: Application
    Filed: June 25, 2018
    Publication date: March 21, 2019
    Inventor: Chun Yuen TO
  • Patent number: 10118431
    Abstract: A ring binder mechanism for holding loose-leaf pages includes a housing and a plurality of rings for holding the loose-leaf pages. Each ring has a first ring member and a second ring member. The first ring member is movable relative to the housing and the second ring member between a closed position and an opened position. In the closed position, the first and second ring members form a substantially continuous, closed loop for allowing loose-leaf pages retained by the rings to be moved along the rings from one ring member to the other. In the opened position, the first and second ring members form a discontinuous, open loop for adding or removing loose-leaf pages. The first and second ring members are generally mirror images of each other. Each of the ring members has a length and at least two different radii of curvature along the length of the rings.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: November 6, 2018
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen To
  • Patent number: 9895922
    Abstract: A ring binder for use in holding loose-leaf pages. A retaining system is configured to selectively and releasably hold first and second ring members in a closed position. First and second interlocking formations are selectively movable relative to one another between a retaining position and a non-retaining position. The first interlocking formation includes a projection having a free end. The free end has a void configured and arranged to permit resilient bending of portions of the free end of the projection in a first direction as they engage the second interlocking formation when the interlocking formations are moved from the non-retaining position to the retaining position. In the retaining position, the portions of the free end of the projection are substantially inhibited from bending in a second direction in response to pivoting movement of either of the ring members.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: February 20, 2018
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen To
  • Publication number: 20170291446
    Abstract: A ring binder has an elongate body and rings including ring members moveable between closed position and open positions. A retaining system selectively and releasably holds the ring members of at least one ring in the closed position. The retaining system includes interlocking formations adjacent ends of the ring members that are moveable between retaining and non-retaining positions. The first interlocking formation includes a recessed region and a projection extending upwardly. The second interlocking formation includes a vaulted region and a projection extending downwardly. The first projection is received in the vaulted region and the second projection is received in the recessed region when the interlocking formations are in the retaining position. The interlocking formations are configured so that movement of the interlocking formations relative to one another in the direction of a longitudinal axis of the body is blocked when the interlocking formations are in the retaining position.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 12, 2017
    Applicant: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen To
  • Patent number: 9751356
    Abstract: A ring binder mechanism includes a housing, a ring support, and rings for holding loose-leaf pages. Each ring includes a first ring member and a second ring member that are moveable between a closed position and an opened position. An actuator is mounted on the housing for moving the ring members from the closed position to the opened position. A travel bar has at least one locking element and is moveable between a locked position wherein the ring members are locked in the closed position and an unlocked position wherein the ring members are capable of being moved to the opened position. An intermediate connector operably connects the travel bar to the actuator. A portion of the intermediate connector is captured by and moveable with a wide section of a mounting groove in the travel bar so the intermediate connector can move relative to the travel bar.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: September 5, 2017
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventors: Jn Biao Pi, Chun Yuen To
  • Patent number: 9688091
    Abstract: A ring binder has housing including a central portion and lateral sides. Hinge plates are held between the lateral sides of the housing. Each of multiple rings includes at least one ring member mounted for movement with the hinge plates between closed and open positions. An actuator is mounted for pivotal movement relative to the housing and engageable with the hinge plates for opening rings. In one embodiment, the housing defines a stop engaged by the actuator upon arrival of the actuator at a terminal position when the actuator has opened the rings. The engagement between the surface of the actuator and the stop limits pivoting movement of the actuator relative to the housing in the opening direction beyond the terminal position. In another embodiment, the actuator is constructed for quicker response of the binder to movement of the actuator to open the rings.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: June 27, 2017
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventors: Chun Yuen To, Ho Ping Cheng, Jin Biao Pi
  • Patent number: 9656507
    Abstract: A ring mechanism has an elongate body made of a moldable polymeric material and rings for holding loose-leaf pages. Each ring includes a first ring member and a second ring member. The first ring members are movable relative to the housing and the second ring members between a closed position and an open position. At least one ring member for each ring is a separately formed ring member and comprises a ring portion and an anchor connected to the ring portion. The at least one separately formed ring member is formed separately from the body. The anchor of the separately formed ring member is secured to the body for pivoting movement relative to the body. The anchor can be received in a receptacle in the body adapted to receive the anchor.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: May 23, 2017
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen To
  • Publication number: 20160229216
    Abstract: A ring binder for use in holding loose-leaf pages. A retaining system is configured to selectively and releasably hold first and second ring members in a closed position. First and second interlocking formations are selectively movable relative to one another between a retaining position and a non-retaining position. The first interlocking formation includes a projection having a free end. The free end has a void configured and arranged to permit resilient bending of portions of the free end of the projection in a first direction as they engage the second interlocking formation when the interlocking formations are moved from the non-retaining position to the retaining position. In the retaining position, the portions of the free end of the projection are substantially inhibited from bending in a second direction in response to pivoting movement of either of the ring members.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 11, 2016
    Applicant: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen TO
  • Publication number: 20150202909
    Abstract: A ring binder has an elongate body and rings. Each ring includes ring members moveable between open and closed positions. The ring members and body can suitably formed together as one piece from a moldable polymeric material. The binder suitably includes a retaining system operable to selectively and releasably hold the ring members in the closed position. When the ring members are in their open position, loose-leaf pages can be added or removed from the rings. Loose-leaf pages can also be moved from one ring member to another when the ring members are in their open position.
    Type: Application
    Filed: December 1, 2014
    Publication date: July 23, 2015
    Inventor: Chun Yuen To
  • Patent number: D735808
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: August 4, 2015
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen To
  • Patent number: D783092
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 4, 2017
    Assignee: World Wide Stationery Mfg. Co., Ltd.
    Inventor: Chun Yuen To
  • Patent number: D878766
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 24, 2020
    Assignee: World Wide Daily Holdings Company Limited
    Inventor: Chun Yuen To