Patents by Inventor Yi-Fan Liao

Yi-Fan Liao 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: 20240102318
    Abstract: An electric lock with electric and manual unlock mode, comprising: a case combining with a side plate and a case cover; a latch bolt, a latch bolt shaft and a latch bolt spring, the front end of the latch bolt shaft is combined with a blocking member, and the blocking member uses the elastic force of the latch bolt spring to stick out of the side plate to lock, when the external force applied to the latch bolt shaft is sufficient to resist the elastic force of the latch bolt spring, the blocking member will retract into the side plate to unlock; a unlock crank, having an electric push member and a manual push member, and a push member relative to the latch bolt shaft; and a linear actuator and an actuating arm, the outer end of the actuating arm is combined with a push block relative to the electric push member, and a push block return spring is set relative to the push block.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Inventor: YI-FAN LIAO
  • Publication number: 20230407675
    Abstract: A electric unlocking device for a push bar latch, comprising: a base frame having an external sliding slot; a linear motor having a stepping stud, the stepping stud is equipped with a stud return spring, and the stepping stud has a binding rod; an unlocking unit having a pair of side plate and an end plate, the side plate has a pair of internal sliding slot, and the end plate has a non-circular hole; a binding unit having a limit oval head rivet and a non-circular barrel, the non-circular barrel sets through the non-circular hole and makes the limit oval head rivet arranged inside the unlocking unit, and makes the non-circular barrel combine with the binding rod, sleeves a buffer spring on the non-circular barrel; and an unlocking connecting rod, the outer end is combined with the push bar returning unit, and the inner end is provided with an unlocking pin.
    Type: Application
    Filed: August 23, 2022
    Publication date: December 21, 2023
    Inventor: YI FAN LIAO
  • Publication number: 20230392410
    Abstract: An electronic lock with adjustable dead latch channel location, comprising: an electronic lock body, having a housing cavity and a latch bolt; a plate, further having a gap for exposing the housing cavity and the latch bolt; a fixed adjust element, the middle section of the fixed adjust element is arranged below the gap, and set a fixed channel; and an active adjust element, having a ramp element relative to the latch bolt, the ramp element having an active channel relative to the positioning channel, and the width of the active channel is narrower than the distance between the pair of the fixing blocks, so the present invention can directly adjust the position of the dead latch channel without disassembling the entire electronic lock from the door frame.
    Type: Application
    Filed: June 16, 2023
    Publication date: December 7, 2023
    Inventor: YI-FAN LIAO
  • Publication number: 20230323701
    Abstract: A control device for a push bar latch, comprising: a base frame having a sliding slot; a control connecting rod, the outer end is combined with an unlocking return unit of the push bar latch and the inner end has a positioning pin, the positioning pin is set through the sliding slot; a locking hook, the outer end has a hook portion relative to the positioning pin; an electromagnet, used for holding the inner end section of the locking hook, so let the hook portion enter a hooking state for the positioning pin; and a release element, used to release the hook portion from the hooking state for the positioning pin when the electromagnet is powered off. Whereby the push bar latch has the enter control function.
    Type: Application
    Filed: August 23, 2022
    Publication date: October 12, 2023
    Inventor: YI FAN LIAO
  • Patent number: 11572710
    Abstract: An improved mechanism of electric lock for door, comprising a case, on both side of the opening of the case arranged keeper arms, drive rods, and rotate member, and a drive mechanism connected to a drive member and a brake member; to achieve lock mode, the drive member drive the brake member to be engaged with the rotate member, making the keeper arms and drive rod unable to rotate, so the keeper arms can block the latch bolt from going through the opening; to achieve unlock mode, the drive member drive the brake member to be separate from the rotate member, making the keeper arms and drive rod able to rotate, so the latch bolt is able to go through the opening.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: February 7, 2023
    Inventor: Yi-Fan Liao
  • Publication number: 20220381063
    Abstract: An electric lock, comprising: a case combining with a side plate and a case cover; a latch bolt, a latch bolt shaft and a latch bolt spring, the front end of the latch bolt shaft is combined with a blocking member, and the blocking member uses the elastic force of the latch bolt spring to stick out of the side plate to lock, when the external force applied to the latch bolt shaft is sufficient to resist the elastic force of the latch bolt spring, the blocking member will retract into the side plate to unlock; a unlock crank, having an electric push member, and a push member relative to the latch bolt shaft; and a linear actuator and an actuating arm, the front end of the actuating arm is combined with a push block relative to the electric push member, and a push block return spring is set relative to the push block.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 1, 2022
    Inventor: YI-FAN LIAO
  • Publication number: 20220243497
    Abstract: An electronic lock with adjustable dead latch channel location, comprising: an electronic lock body, having a housing cavity and a latch bolt; a plate, further having a gap for exposing the housing cavity and the latch bolt; a fixed adjust element, the middle section of the fixed adjust element is arranged below the gap, and set a fixed channel and a fixed positioning unit; and an active adjust element, the ramp element having an active channel relative to the positioning channel, and having an active positioning unit, so the present invention does not need to disassemble the entire electronic lock from the door frame, and can directly adjust the position of the dead latch channel.
    Type: Application
    Filed: December 10, 2021
    Publication date: August 4, 2022
    Inventor: YI-FAN LIAO
  • Publication number: 20210102405
    Abstract: An improved mechanism of electric lock for door, comprising a case, on both side of the opening of the case arranged keeper arms, drive rods, and rotate member, and a drive mechanism connected to a drive member and a brake member; to achieve lock mode, the drive member drive the brake member to be engaged with the rotate member, making the keeper arms and drive rod unable to rotate, so the keeper arms can block the latch bolt from going through the opening; to achieve unlock mode, the drive member drive the brake member to be separate from the rotate member, making the keeper arms and drive rod able to rotate, so the latch bolt is able to go through the opening.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 8, 2021
    Inventor: YI-FAN LIAO
  • Publication number: 20200284064
    Abstract: An electronic lock having a lock box arranged in the jamb and a face plate arranged in the door edge, the lock box has a brake gear with a screw sleeve arranged on a screw rod for driving the screw sleeve to displace back and forth, and by driving the rear end of the latch bolt, make the front end of the latch bolt be able to rotate inside the containing space of the lock box and go into or out of the bolt slot, and further goes into the lock slot of the face plate to achieve locking status; or the restoring of the expansion spring makes the latch bolt returned to the containing space to become unlocking status. Because the latch bolt is using the rotation to go in or out of the bolt slot and the screw sleeve and the screw rod which driving the latch bolt has the characteristic of high torque transmission, the present invention can ensure the operation stability of the lock during the locking and unlocking process.
    Type: Application
    Filed: February 12, 2020
    Publication date: September 10, 2020
    Inventor: YI-FAN LIAO
  • Patent number: 10290421
    Abstract: A manufacturing method of an attraction plate for electromagnetic door locks has an attraction plate positioned on a mounted body with a positioning hole at the center thereof. The attraction plate further has an arch portion at the center thereof which is reversely proportional to a thickness thereof and the thickness thereof is pre-determined for manufacturing a different height of the arch portion thereof for better effects. With an internal stress from the curved design, a tensile value of a door lock is increased for better operation of a door lock.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: May 14, 2019
    Inventor: Yi-Fan Liao
  • Publication number: 20160251884
    Abstract: A manufacturing method of an attraction plate for electromagnetic door locks has an attraction plate positioned on a mounted body with a positioning hole at the center thereof. The attraction plate further has an arch portion at the center thereof which is reversely proportional to a thickness thereof and the thickness thereof is pre-determined for manufacturing a different height of the arch portion thereof for better effects. With an internal stress from the curved design, a tensile value of a door lock is increased for better operation of a door lock.
    Type: Application
    Filed: May 11, 2016
    Publication date: September 1, 2016
    Inventor: YI-FAN LIAO
  • Patent number: 9341007
    Abstract: The main features of the structure improvement of attraction plate of electromagnetic doorlock, comprises a positioning assembly positioned on a mounted body at the position close to both ends of the attraction plate, an attraction surface having a recessed portion below the horizontal plane of 0.06 mm to 0.26 mm at a central region thereof, and the recessed portion extending towards both ends to form an arc surface, so that a concave-arc surface is formed with both ends lower than the central region. The present invention uses the concave arc design of the attraction surface to maintain the normal current of the electric magnet while the attraction plate is pulled by the curved internal stress structure for saving energy and enhancing the security access control.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: May 17, 2016
    Inventor: Yi-Fan Liao
  • Publication number: 20150259958
    Abstract: An attraction plate structure of electromagnetic doorlock includes an attraction plate positioned on a mounted body by a positioning assembly. The attraction surface has an arch portion arranged at a height between 0.04-0.27 mm at a central region thereof, which is higher than the bottom plane of the attraction plate. The arch portion extends towards both ends to form a convex-curve surface with both ends lower than the central region, and the height thereof is inversely proportional to the thickness of the attraction plate within said pre-determined range. Thus, the present invention uses the convex curve design of the attraction surface to produce the curved internal stress while the attraction plate is pulled.
    Type: Application
    Filed: June 1, 2015
    Publication date: September 17, 2015
    Inventor: YI-FAN LIAO
  • Publication number: 20140225692
    Abstract: An attraction plate structure of electromagnetic doorlock comprises an attraction plate positioned on a mounted body by a positioning assembly. The attraction surface has an arch portion higher than the bottom plane of 0.04 mm to 0.27 mm at a central region thereof, and the arch portion extends towards both ends to form an arc surface, so that a convex-curve surface is formed with both ends lower than the central region. The present invention uses the convex curve design of the attraction surface to produce the curved internal stress while the attraction plate is pulled. Due to the curved internal stress, the electric magnet under the normal current is able to enhance the tensile value of the electromagnetic doorlock, saving energy and enhancing the security access control.
    Type: Application
    Filed: January 23, 2014
    Publication date: August 14, 2014
    Inventor: YI-FAN LIAO
  • Publication number: 20140191517
    Abstract: The main features of the structure improvement of attraction plate of electromagnetic doorlock, comprises a positioning assembly positioned on a mounted body at the position close to both ends of the attraction plate, an attraction surface having a recessed portion below the horizontal plane of 0.06 mm to 0.26 mm at a central region thereof, and the recessed portion extending towards both ends to form an arc surface, so that a concave-arc surface is formed with both ends lower than the central region. The present invention uses the concave arc design of the attraction surface to maintain the normal current of the electric magnet while the attraction plate is pulled by the curved internal stress structure for saving energy and enhancing the security access control.
    Type: Application
    Filed: January 7, 2014
    Publication date: July 10, 2014
    Inventor: YI-FAN LIAO
  • Patent number: 8021006
    Abstract: A LED array flash for cameras includes a LED array and a controller. The LED array consists of at least one LED light source with first order lens. The LED light source may be further covered with a second order lens. Thus an oblong or round distribution pattern with uniform light intensity is emitted. The controller is used to control flash modes such as low brightness continuous lighting or high brightness pulse lighting with lighting time control so as to save power and avoid overheating.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: September 20, 2011
    Assignee: E-Pin Optical Industry Co., Ltd.
    Inventors: San-Woei Shyu, Chu-Fong Lam, Teng-Chien Yu, Yi-Fan Liao
  • Patent number: 8011811
    Abstract: The present invention discloses an aspherical LED angular optical lens for central distribution patterns and an LED assembly using the same. The optical lens comprises a concave surface on a source side and a convex surface on an project side. The LED assembly comprising the optical lens can accumulate light emitted from the LED die and generate a peak intensity of the central angular circle distribution pattern which is greater than 72° and smaller than 108°. The present invention only uses a single optical lens capable of accumulating light and forming a required distribution pattern to satisfy the requirement of a luminous flux ratio greater than 85% and the requirement of an illumination, a flash light of a cell phone or a flash light of a camera.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: September 6, 2011
    Assignee: E-Pin Optical Industry Co., Ltd.
    Inventors: Bo-Yuan Shih, Kai Mou Lin, Yi-Fan Liao, San-Woei Shyu
  • Patent number: 7993035
    Abstract: The present invention discloses an aspherical LED angular optical lens for narrow distribution patterns and an LED assembly using the same. The optical lens comprises a concave surface on a source side and a convex surface on a project side. The LED assembly comprising the optical lens can accumulate light emitted from the LED die and generate a peak intensity of the narrow angular circle distribution pattern which is greater than 15° and smaller than 30°. The present invention only uses a single optical lens capable of accumulating light and forming a required distribution pattern to satisfy the requirement of a luminous flux ratio greater than 85% and the requirement of an illumination, a flash light of a cell phone or a flash light of a camera.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: August 9, 2011
    Assignee: E-Pin Optical Industry Co., Ltd.
    Inventors: Bo-Yuan Shih, Kai Mou Lin, Yi-Fan Liao, San-Woei Shyu
  • Patent number: 7980733
    Abstract: The present invention discloses an aspherical LED angular optical lens for wide distribution patterns and an LED assembly using the same. The optical lens comprises a concave surface on a source side and a convex surface on a project side. The LED assembly comprising the optical lens can accumulate light emitted from the LED die and generate a peak intensity of the wide angular circle distribution pattern which is greater than 120° and smaller than 180°. The present invention only uses a single optical lens capable of accumulating light and forming a required distribution pattern to satisfy the requirement of a luminous flux ratio greater than 85% and the requirement of an illumination, a flash light of a cell phone or a flash light of a camera.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: July 19, 2011
    Assignee: E-Pin Optical Industry Co., Ltd.
    Inventors: Bo-Yuan Shih, Kai Mou Lin, Yi-Fan Liao, San-Woei Shyu
  • Patent number: 7780313
    Abstract: A package structure for light emitting diode (LED) comprises a base, an LED die, an optical lens and a lens holder. The base comprises at least one holder cavity formed on its surface and at least one chase formed on its side surface. The lens holder comprises an opening, at least one holder stem and at least one wedge. The optical lens is arranged between the lens holder and the base, and also through the opening. The lens holder is fastened on the base by wedging the wedge with the chase and positioned on the base by embedding the holder stem into the holder cavity to enhance the positioning between the optical lens and the base, such that the optical lens can generate a desired light pattern. Therefore, the required time of a packaging process can be reduced, and the lens holder can be removed simply for replacing the optical lens, so the objective of changing the light pattern quickly can be achieved.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: August 24, 2010
    Assignee: E-Pin Optical Industry Co. Ltd
    Inventors: Chu-Fong Lam, Yi-Fan Liao