Patents by Inventor Chung-Shih Tsai

Chung-Shih Tsai 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: 11801515
    Abstract: A paper scrap pushing structure of a paper shredder, having a paper pushing unit, with a spindle having a longitudinal axis, a spindle flap coupled along the longitudinal axis to the spindle; and a paddle pushing segment, coupled to the spindle flap. The spindle is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. When the rotating shaft rotates, the rotating shaft drives the paddle pushing segment to move in the circumferential direction along with the spindle flap, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: October 31, 2023
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Er Ren Zhong, Guanglong Chen
  • Publication number: 20220105518
    Abstract: A paper scrap pushing structure of a paper shredder, having a paper pushing unit, with a spindle having a longitudinal axis, a spindle flap coupled along the longitudinal axis to the spindle; and a paddle pushing segment, coupled to the spindle flap. The spindle is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. When the rotating shaft rotates, the rotating shaft drives the paddle pushing segment to move in the circumferential direction along with the spindle flap, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
    Type: Application
    Filed: December 16, 2021
    Publication date: April 7, 2022
    Inventors: Chung Shih Tsai, Er Ren Zhong, Guanglong Chen
  • Patent number: 11090657
    Abstract: An automatic paper shredder includes a shredder cover, a paper holding box, a shell, a paper holding plate, a paper holding plate inlet, a paper shredding component, a drive motor, a paper pressing plate, a paper pick-up component, and a waste paper bin. The paper pressing effect is improved through a spliced paper pressing plate, and the paper pick-up effect is improved through a damping plate, a soft rubber piece, and a convex rib, and thus, efficiency is improved. The automatic paper shredder has the characteristics of being highly automated, convenient to use, safe, reliable, structurally simple and cost-effective.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 17, 2021
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Er Ren Zhong, Taokuei Chuang
  • Patent number: 11084041
    Abstract: A paper shredder has a paper tray, a paper inlet, a shredder cover, a paper pressing plate, paper pick-up rollers, a shredder cutter shaft, a motor, a wastepaper barrel, and a paper limiter. The paper tray carries a stack of to-be-shredded paper. The paper inlet guides to-be-shredded paper. The shredder cover end is connected to the shredder body by a rotary shaft, closing or opening the shredder body. The paper pressing pl presses the stack in the paper tray. The paper pick-up rollers are on one side of the paper inlet, feeding the paper tray stack into the paper inlet. The shredder cutter shaft shreds the to-be-shredded paper. The motor drives the shredder cutter shaft to operate. The wastepaper barrel is located below the paper inlet to collect shredded paper. The paper limiter is limits one of a thickness or a length of the stack placed in the paper tray.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: August 10, 2021
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Er Ren Zhong, Guanglong Chen, Tao Kuei Chuang
  • Patent number: 11052402
    Abstract: An automatic paper shredder with a staple removing structure and a staple removing method using the same. The automatic paper shredder includes a shredder cover, a paper holding box, a shell, a paper holding plate, a paper inlet, a paper shredding component, a drive motor, a paper pick-up component, a paper pressing plate, a straight through-hole, a waste paper bin and a staple removing component. The automatic paper shredder removes a staple (or clip) on a stack of paper through cooperation with a paper shredding structure. Paper can be automatically picked up in batches. Meanwhile, damage caused by staples to the whole shredder is prevented, and thus, the whole shredder is protected in use and has a longer service life.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 6, 2021
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Er Ren Zhong, Taokuei Chuang
  • Publication number: 20210138478
    Abstract: An automatic paper shredder with a staple removing structure and a staple removing method using the same. The automatic paper shredder includes a shredder cover, a paper holding box, a shell, a paper holding plate, a paper inlet, a paper shredding component, a drive motor, a paper pick-up component, a paper pressing plate, a straight through-hole, a waste paper bin and a staple removing component. The automatic paper shredder removes a staple (or clip) on a stack of paper through cooperation with a paper shredding structure. Paper can be automatically picked up in batches. Meanwhile, damage caused by staples to the whole shredder is prevented, and thus, the whole shredder is protected in use and has a longer service life.
    Type: Application
    Filed: February 28, 2019
    Publication date: May 13, 2021
    Inventors: Chung Shih Tsai, Er Ren Zhong, Taokuei Chuang
  • Publication number: 20210114040
    Abstract: A paper scrap pushing structure of a paper shredder, including a rotating shaft, a paper pushing rod, and connecting rods, in which the rotating shaft is arranged under a paper outlet, and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. The paper pushing rod is located on one side of the rotating shaft, arranged in the length direction of the rotating shaft in parallel and connected with the rotating shaft through the connecting rods. The distance from the paper pushing rod to the rotating shaft is smaller than the distance from the lowest portion of the paper shredder cutter shaft to the rotating shaft. When rotating, the rotating shaft drives the paper pushing rod to move in a circumferential direction through the connecting rods, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 22, 2021
    Inventors: Chung Shih Tsai, Er Ren Zhong, Guanglong Chen
  • Publication number: 20210086190
    Abstract: A paper shredder has a paper tray, a paper inlet, a shredder cover, a paper pressing plate, paper pick-up rollers, a shredder cutter shaft, a motor, a wastepaper barrel, and a paper limiter. The paper tray carries a stack of to-be-shredded paper. The paper inlet guides to-be-shredded paper. The shredder cover end is connected to the shredder body by a rotary shaft, closing or opening the shredder body. The paper pressing pl presses the stack in the paper tray. The paper pick-up rollers are on one side of the paper inlet, feeding the paper tray stack into the paper inlet. The shredder cutter shaft shreds the to-be-shredded paper. The motor drives the shredder cutter shaft to operate. The wastepaper barrel is located below the paper inlet to collect shredded paper. The paper limiter is limits one of a thickness or a length of the stack placed in the paper tray.
    Type: Application
    Filed: September 19, 2019
    Publication date: March 25, 2021
    Applicant: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Er Ren Zhong, Guanglong Chen, Tao Kuei Chuang
  • Patent number: 10875029
    Abstract: A paper scrap pushing structure of a paper shredder, including a rotating shaft, a paper pushing rod, and connecting rods, in which the rotating shaft is arranged under a paper outlet, and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. The paper pushing rod is located on one side of the rotating shaft, arranged in the length direction of the rotating shaft in parallel and connected with the rotating shaft through the connecting rods. The distance from the paper pushing rod to the rotating shaft is smaller than the distance from the lowest portion of the paper shredder cutter shaft to the rotating shaft. When rotating, the rotating shaft drives the paper pushing rod to move in a circumferential direction through the connecting rods, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: December 29, 2020
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Erren Zhong, Guanglong Chen
  • Publication number: 20200276594
    Abstract: An automatic paper shredder includes a shredder cover, a paper holding box, a shell, a paper holding plate, a paper holding plate inlet, a paper shredding component, a drive motor, a paper pressing plate, a paper pick-up component, and a waste paper bin. The paper pressing effect is improved through a spliced paper pressing plate, and the paper pick-up effect is improved through a damping plate, a soft rubber piece, and a convex rib, and thus, efficiency is improved. The automatic paper shredder has the characteristics of being highly automated, convenient to use, safe, reliable, structurally simple and cost-effective.
    Type: Application
    Filed: February 28, 2019
    Publication date: September 3, 2020
    Applicant: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Er Ren Zhong, Taokuei Chuang
  • Patent number: 10639642
    Abstract: A paper shredder having shredder cover and a motor coupled to shredder blades includes a shredder throat in proximity to shredder blades. The shredder throat has a moveable blade, and a fixed blade. A shredder jam grip has a projection in communication with a power switch plunger. When the shredder is in the NORMAL position, a throat gap is in its normal position and the projection positions the plunger to power to the motor. When the shredder is in the JAM CLEAR position, the throat gap is in its wide position and the projection positions the plunger to remove power from the motor.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: May 5, 2020
    Assignee: AURORA OFFICE EQUIPMENT CO., LTD. SHANGHAI
    Inventors: Chung Shih Tsai, Yung Kang Tso, Xiuming Liu
  • Patent number: 10537896
    Abstract: A paper shredder with counter-rotating shredder blades coupled to a shredder motor, including a paper tray having a floor and being shaped to receive paper. The floor has an offset slot therein adjacent to the counter-rotating shredder blades. The engagement wheels partly protrude through floor, adjacent to the offset slot. The engagement wheels frictionally engage paper and turn towards the offset slot to force paper into the shredder blades. Also, a dentate catch disposed in each corner of the paper tray temporarily holds an affixment while a sheet of paper held by the affixment is being frictionally engaged by the engagement wheels to enter the slot for comminution. A PAPER FULL sensor, a DOOR OPEN sensor, an OVERLOAD sensor, an OVERHEAT sensor, a paper-in-tray sensor, a paper-at-entry sensor, a SAFETY LOCK sensor, and a cover door open/closed sensor are provided, as are AUTO and MANUAL modes of operation.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 21, 2020
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Yung Kang Tso, Guanglong Chen, Bin Zhang
  • Publication number: 20190232299
    Abstract: A paper scrap pushing structure of a paper shredder, including a rotating shaft, a paper pushing rod, and connecting rods, in which the rotating shaft is arranged under a paper outlet, and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. The paper pushing rod is located on one side of the rotating shaft, arranged in the length direction of the rotating shaft in parallel and connected with the rotating shaft through the connecting rods. The distance from the paper pushing rod to the rotating shaft is smaller than the distance from the lowest portion of the paper shredder cutter shaft to the rotating shaft. When rotating, the rotating shaft drives the paper pushing rod to move in a circumferential direction through the connecting rods, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 1, 2019
    Inventors: Chung Shih Tsai, Erren Zhong, Guanglong Chen
  • Publication number: 20180050344
    Abstract: A paper shredder controller, with an all-analog controller including a power supply circuit, coupled to a door open switch circuit, an automatic forward control circuit, an automatic reverse control circuit, and a wastebin full circuit. The paper shredder controller includes an overload circuit, a forward-reverse control and relays circuit, a forward-reverse model delay setting circuit, and an overheating protection circuit. Further includes a POWER indicator light; a DOOR OPEN light; an AUTOMATIC FORWARD light; an OVERHEATING light, and a WASTEBIN FULL light.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 22, 2018
    Applicant: AURORA OFFICE EQUIPMENT CO., LTD. SHANGHAI
    Inventors: Bin Zhang, Tao Kuei Chuang, Yung Kang Tso, Chung Shih Tsai
  • Publication number: 20180043367
    Abstract: A paper shredder having shredder cover and a motor coupled to shredder blades includes a shredder throat in proximity to shredder blades. The shredder throat has a moveable blade, and a fixed blade. A shredder jam grip has a projection in communication with a power switch plunger. When the shredder is in the NORMAL position, a throat gap is in its normal position and the projection positions the plunger to power to the motor. When the shredder is in the JAM CLEAR position, the throat gap is in its wide position and the projection positions the plunger to remove power from the motor.
    Type: Application
    Filed: October 23, 2017
    Publication date: February 15, 2018
    Inventors: Chung Shih Tsai, Yung Kang Tso, Xiuming Liu
  • Publication number: 20180008987
    Abstract: A paper shredder with counter-rotating shredder blades coupled to a shredder motor, including a paper tray having a floor and being shaped to receive paper. The floor has an offset slot therein adjacent to the counter-rotating shredder blades. The engagement wheels partly protrude through floor, adjacent to the offset slot. The engagement wheels frictionally engage paper and turn towards the offset slot to force paper into the shredder blades. Also, a dentate catch disposed in each corner of the paper tray temporarily holds an affixment while a sheet of paper held by the affixment is being frictionally engaged by the engagement wheels to enter the slot for comminution. A PAPER FULL sensor, a DOOR OPEN sensor, an OVERLOAD sensor, an OVERHEAT sensor, a paper-in-tray sensor, a paper-at-entry sensor, a SAFETY LOCK sensor, and a cover door open/closed sensor are provided, as are AUTO and MANUAL modes of operation.
    Type: Application
    Filed: July 5, 2016
    Publication date: January 11, 2018
    Applicant: AURORA OFFICE EQUIPMENT CO., LTD. SHANGHAI
    Inventors: CHUNG SHIH TSAI, YUNG KANG TSO, GUANGLONG CHEN, BIN ZHANG
  • Patent number: 9827570
    Abstract: A paper shredder having shredder cover and a motor coupled to shredder blades includes a shredder throat in proximity to shredder blades. The shredder throat has a moveable blade, and a fixed blade. A cam coupled to the moveable blade is in communication with a power switch plunger. When the shredder is in the NORMAL/ON position, a throat gap is in its normal position and the cam positions the plunger to power to the motor. When the shredder is in the JAM CLEAR/OFF position, the throat gap is in its wide position and the cam positions the plunger to remove power to the motor. A method is provided, including providing a moveable blade; sensing a throat jammed condition; releasing the moveable blade; moving the moveable blade to a wide gap position; sensing the moveable blade in the wide gap position; turning off the motor in response to the sensing.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: November 28, 2017
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Yung Kang Tso, Xiuming Liu
  • Patent number: 9687854
    Abstract: A paper shredder having shredder cover and a motor coupled to shredder blades includes a shredder throat coupled to an inlet in the shredder cover and in proximity to shredder blades. The shredder throat has a moveable throat blade, which widens the shredder throat. An anti-jam switch, which when activated causes the motor to advance the shredder blades to clear a jam in the widened shredder throat. The jam clearing mechanism can be automatic or manual, as by push-button or turn-knob linkages. A method for recovering from a shredder jam in a paper shredder is provided, including providing a moveable throat blade; sensing a shredder throat jammed condition; releasing the moveable throat blade; moving the moveable throat blade to a wide gap position; sensing the moveable throat blade in the wide gap position; advancing shredder blades in response to the sensing, by which the jammed condition is cleared.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 27, 2017
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Chung Shih Tsai, Yung Kang Tso, Xiuming Liu
  • Publication number: 20170087559
    Abstract: A novel safe paper feed opening structure of a paper shredder, having a shredder upper cover and a paper shredder plate. The shredder upper cover has an opening, and the paper shredder plate is at the opening. The opening communicates with a moveable feed throat. The paper shredder plate can be configured in one of four positions. The moveable feed throat has a normal opening and a wide opening. The feed throat can be moved to the wide opening when the shredder plate is in a JAM CLEAR/OFF position. The CLOSED/OFF, NORMAL/ON, and SHRED-SAFE/OFF positions use a normal feed throat. A method for operating a paper shredder includes providing a shredder upper cover; providing the shredder upper cover with an opening; disposing a paper shredder plate at the opening; disposing the opening in communication with a moveable feed throat; and moving the feed throat responsive to a paper shredder condition.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 30, 2017
    Inventors: Yung Kang Tso, Wei Liu, GuangLong Chen, Chung Shih Tsai
  • Publication number: 20160271618
    Abstract: A paper shredder having shredder cover and a motor coupled to shredder blades includes a shredder throat in proximity to shredder blades. The shredder throat has a moveable blade, and a fixed blade. A cam coupled to the moveable blade is in communication with a power switch plunger. When the shredder is in the NORMAL/ON position, a throat gap is in its normal position and the cam positions the plunger to power to the motor. When the shredder is in the JAM CLEAR/OFF position, the throat gap is in its wide position and the cam positions the plunger to remove power to the motor. A method is provided, including providing a moveable blade; sensing a throat jammed condition; releasing the moveable blade; moving the moveable blade to a wide gap position; sensing the moveable blade in the wide gap position; turning off the motor in response to the sensing.
    Type: Application
    Filed: September 11, 2015
    Publication date: September 22, 2016
    Inventors: CHUNG SHIH TSAI, Yung Kang Tso, Xiuming Liu