Patents by Inventor Shu-Chen Cheng

Shu-Chen Cheng 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: 20100290830
    Abstract: A connector for safety gates has a body being hollow and having an inner space, a baffle, a securing segment and a slit. The baffle is formed in the body to define the inner space into a first holding channel and a second holding channel formed through the body and parallel with each other. The securing segment is formed on the bottom. The slit is formed through the securing segment and the bottom of the body and communicates with the second holding channel to make the second holding channel openable and to divide the securing segment into a first part corresponding to the first holding channel and a second part corresponding to the second holding channel.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 18, 2010
    Inventor: Shu-Chen Cheng
  • Patent number: 7552513
    Abstract: A barrier hinge assembly has an upper hinge assembly, a lower hinge assembly and a turnbuckle assembly. The upper hinge assembly has an upper pintle device and an upper gudgeon device. The upper pintle device has a pintle protruding down. The upper gudgeon device has a through hole in which the upper pintle is mounted. The lower hinge assembly has a lower gudgeon device and a lower pintle device. The lower gudgeon device has a through hole. The lower pintle device has a pintle protruding up and mounted through the through hole of the lower gudgeon device. The turnbuckle assembly is fastened to the pintles of the upper and the lower pintle devices at the same time to hold the upper and the lower gudgeon devices in specific positions.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: June 30, 2009
    Inventor: Shu-Chen Cheng
  • Publication number: 20090070965
    Abstract: A barrier hinge assembly has an upper hinge assembly, a lower hinge assembly and a turnbuckle assembly. The upper hinge assembly has an upper pintle device and an upper gudgeon device. The upper pintle device has a pintle protruding down. The upper gudgeon device has a through hole in which the upper pintle is mounted. The lower hinge assembly has a lower gudgeon device and a lower pintle device. The lower gudgeon device has a through hole. The lower pintle device has a pintle protruding up and mounted through the through hole of the lower gudgeon device. The turnbuckle assembly is fastened to the pintles of the upper and the lower pintle devices at the same time to hold the upper and the lower gudgeon devices in specific positions.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventor: Shu-Chen Cheng
  • Patent number: 7438112
    Abstract: A roll-up barrier has a base, an end cap, a drive shaft connected between the base and the end cap, a rolling assembly, a resilient element and a flexible barrier. The end cap has an arresting mechanism having a control button and an arrestor. The rolling assembly is mounted rotatably around the drive shaft and has a rolling bushing. The rolling bushing has an actuator and multiple one-way arresting teeth. The resilient element provides a reposition force for rolling back the rolling assembly. The flexible barrier is mounted retractably around the rolling assembly. When the control button is pressed and rotated, the actuator detaches the arrestor from the arresting teeth to allow rotation of the rolling assembly. When the control button is released, the arrestor engages the arresting teeth to prevent the rolling assembly from rotation so the flexible barrier can be pulled out and held at a desired length.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: October 21, 2008
    Inventor: Shu-Chen Cheng
  • Patent number: 7396056
    Abstract: A gate lock is composed of a lock base, a lock core with a slot defined therein, a latch member and a bolt assembly. A gate is mounted in a frame, which can be mounted in a doorway. The gate lock is mounted on the gate and the bolt assembly of the gate lock is mounted on the frame. When the gate is closed, the bolt is engaged in the slot in the lock core. The lock core is then rotated 90 degrees. The bolt will not slide out of the slot, and the gate is locked. To unlock the gate, the lock core is rotated 90 degrees in the opposite direction. The gate is then lifted upward allowing the bolt to slide out of the slot, thus enabling the gate to swing open.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: July 8, 2008
    Inventor: Shu-Chen Cheng
  • Publication number: 20080121352
    Abstract: A roll-up barrier has a base, an end cap, a drive shaft, a rolling assembly, a resilient element and a flexible barrier. The drive shaft is connected between the base and the end cap. The rolling assembly has a rolling tube and a rolling bushing. The rolling tube is mounted rotatably around the drive shaft and has a top end. The rolling bushing is connected securely to the top end of the rolling tube. The resilient element is connected to the drive shaft and the rolling bushing and pushes the rolling bushing up. The flexible barrier is attached to and mounted retractably around the rolling tube. The roll-up barrier has a structure that is simple and makes fabrication and assembly of the roll-up barrier easy and convenient.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Inventor: Shu-Chen Cheng
  • Publication number: 20080121354
    Abstract: A roll-up barrier has a base, an end cap, a drive shaft connected between the base and the end cap, a rolling assembly, a resilient element and a flexible barrier. The end cap has an arresting mechanism having a control button and an arrestor. The rolling assembly is mounted rotatably around the drive shaft and has a rolling bushing. The rolling bushing has an actuator and multiple one-way arresting teeth. The resilient element provides a reposition force for rolling back the rolling assembly. The flexible barrier is mounted retractably around the rolling assembly. When the control button is pressed and rotated, the actuator detaches the arrestor from the arresting teeth to allow rotation of the rolling assembly. When the control button is released, the arrestor engages the arresting teeth to prevent the rolling assembly from rotation so the flexible barrier can be pulled out and held at a desired length.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Inventor: Shu-Chen Cheng
  • Publication number: 20080079291
    Abstract: A folding high chair has a seat assembly, a connection assembly, a support assembly and a rear stand assembly. The seat assembly has a seat and a backrest connecting pivotally to the seat. The connection assembly is mounted on the seat. The support assembly is mounted pivotally on the connection assembly. The rear stand assembly connects pivotally to the support assembly. The seat assembly, support assembly and rear stand assembly are substantially parallel to one another when the folding high chair is folded. Therefore, the folding high chair may be changed into a compact folded configuration convenient for carrying and storage.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 3, 2008
    Inventor: Shu-Chen CHENG
  • Publication number: 20070210293
    Abstract: A fencing device has at least one first fence and at least one second fence adjacent to the first fence, and at least one positioning device. The first fence has an upper block and a lower block respectively formed at an upper end and a lower end thereof, an upper ear and a lower ear. The upper ear has multiple first skewed surfaces, and each positioning device has a seat having multiple second skewed surfaces. With the interconnection of the first skewed surfaces and the second skewed surfaces, the present invention can be folded or unfolded conveniently.
    Type: Application
    Filed: March 13, 2006
    Publication date: September 13, 2007
    Inventor: Shu-Chen Cheng
  • Publication number: 20070085353
    Abstract: A gate lock is composed of a lock base, a lock core with a slot defined therein, a latch member and a bolt assembly. A gate is mounted in a frame, which can be mounted in a doorway. The gate lock is mounted on the gate and the bolt assembly of the gate lock is mounted on the frame. When the gate is closed, the bolt is engaged in the slot in the lock core. The lock core is then rotated 90 degrees. The bolt will not slide out of the slot, and the gate is locked. To unlock the gate, the lock core is rotated 90 degrees in the opposite direction. The gate is then lifted upward allowing the bolt to slide out of the slot, thus enabling the gate to swing open.
    Type: Application
    Filed: October 18, 2005
    Publication date: April 19, 2007
    Inventor: Shu-Chen Cheng
  • Patent number: 7152372
    Abstract: A gate has a frame, a gate door, a latch and a latch seat. The gate door is pivotally mounted in the frame. The latch is attached to a top corner of the gate door. The latch seat is attached to a top inner corner of the frame. The latch seat and the latch engage each other to latch the gate door to the frame. Unlatching the gate door requires multiple actions so children or pets are not able to open the gate. The safety of children is assured, and pets will not ruin objects isolated by the gate.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: December 26, 2006
    Inventor: Shu-Chen Cheng
  • Publication number: 20060207180
    Abstract: A gate has a frame, a gate door, a latch and a latch seat. The gate door is pivotally mounted in the frame. The latch is attached to a top corner of the gate door. The latch seat is attached to a top inner corner of the frame. The latch seat and the latch engage each other to latch the gate door to the frame. Unlatching the gate door requires multiple actions so children or pets are not able to open the gate. The safety of children is assured, and pets will not ruin objects isolated by the gate.
    Type: Application
    Filed: March 16, 2005
    Publication date: September 21, 2006
    Inventor: Shu-Chen Cheng
  • Patent number: 6715182
    Abstract: A self-closing safety gate hinge comprises a bracket, a bottom seat, a top seat and a hinge pin. The bracket is attached to a top of a gate post. The bottom seat is attached to one side of the bracket and an inclined top surface is cambered on the bottom seat. A through hole is defined vertically through the bottom seat. The top seat has an inclined bottom surface corresponding to the inclined top surface and is attached to one side of a gate at top. A stepped through hole is defined vertically through the top seat. The hinge pin is mounted through a spring and the through holes and is held in place by a C-clip.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: April 6, 2004
    Inventor: Shu-Chen Cheng
  • Publication number: 20030009945
    Abstract: A self-closing safety gate hinge comprises a bracket, a bottom seat, a top seat and a hinge pin. The bracket is attached to a top of a gate post. The bottom seat is attached to one side of the bracket and an inclined top surface is cambered on the bottom seat. A through hole is defined vertically through the bottom seat. The top seat has an inclined bottom surface corresponding to the inclined top surface and is attached to one side of a gate at top. A stepped through hole is defined vertically through the top seat. The hinge pin is mounted through a spring and the through holes and is held in place by a C-clip.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 16, 2003
    Inventor: Shu-Chen Cheng
  • Patent number: 6425609
    Abstract: A locking device for use with a child safety door has a press bar (24) pivotally received in a housing (21), a first latch (22) pivotable in relation to the housing (21) and having an end (222) securely engaged with a first end (242) of the press bar (24), a handle (26) pivotally received in the housing (21) and having an abutting block (263) and a second latch (23) slidably received inside the housing (21) and operatably connected with the handle (26). With such an arrangement, the press bar (24) and the handle (26) are able to control the locking/unlocking mode between the door (14) and the doorframe (10) of the safety door.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: July 30, 2002
    Inventor: Shu-Chen Cheng
  • Publication number: 20010017471
    Abstract: A locking device for use with a child safety door has a press bar (24) pivotally received in a housing (21), a first latch (22) pivotable in relation to the housing (21) and having an end (222) securely engaged with a first end (242) of the press bar (24), a handle (26) pivotally received in the housing (21) and having an abutting block (263) and a second latch (23) slidably received inside the housing (21) and operatably connected with the handle (26). With such an arrangement, the press bar (24) and the handle (26) are able to control the locking/unlocking mode between the door (14) and the doorframe (10) of the safety door.
    Type: Application
    Filed: February 21, 2001
    Publication date: August 30, 2001
    Inventor: Shu-Chen Cheng
  • Patent number: 6112461
    Abstract: A safety gate for a doorframe, which is able to prevent small children from going into a restricted or dangerous area, has a lock that requires two different and independent steps to proceed the unlock process. Furthermore, after the lock is unlocked, the user still needs to lift the plate body before the pivotal movement of the plate body with respect to the first side bar is possible.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: September 5, 2000
    Inventor: Shu-Chen Cheng
  • Patent number: 5964545
    Abstract: A folding device mounted between two sections of one rail of a playyard to achieve a folding of the playyard is disclosed. The folding device includes a sheet body bent to integrally form front plate, a rear plate opposed to the front plate and a middle arcuate plate coupling top edges of the front plate and the rear plate. A press button has a rectangular pedestal with a stepped portion received in an channel defined in the rear plate and a protrusion integrally extending from the stepped portion of the pedestal and selectively projecting beyond a hole defined in the front plate of the sheet body. A spring is compressed between the rear plate and a back of the pedestal for selectively urging the press button.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: October 12, 1999
    Inventor: Shu-Chen Cheng
  • Patent number: D543712
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: June 5, 2007
    Inventor: Shu-Chen Cheng