Patents by Inventor Pao Chi Chang

Pao Chi Chang 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: 11719434
    Abstract: The present invention provides a gas safety device using low power to control high flow, which includes a controller, a differential pressure regulating valve, and a driver, the controller can control if the gas can flow into the differential pressure regulating valve, the differential pressure regulating valve is connected to the controller, and can control if the gas can flow out for burning according to the gas pressure changes, the driver uses a drive piece to drive a micro switch lever inside the controller, so that the controller can output gas, thus, the present invention can control high gas flow with low power while maintaining safe usage of the gas.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: August 8, 2023
    Assignee: SEVEN UNIVERSE INDUSTRIAL CO., LTD.
    Inventors: Pao-Chi Chang, Ping-Yang Wu
  • Patent number: 11441692
    Abstract: An overflow and overheat shutoff safety gas inlet connector, comprising a gas inlet connector, to be connected to the gas source, with a gas inlet hole configured axially, a chamber configured on one end to be connected to the gas inlet hole, and a plurality of holding compartments configured on one side of the chamber, a connecting tube, in threaded connection with the gas inlet connector, with a convex portion on its one end, a transfer canal configured axially and going through the convex portion, said transfer canal matching the gas inlet hole, a first magnetic piece, made of a magnetic material, movably configured inside the chamber and matching the gas inlet hole and the transfer canal, able to seal the transfer canal when being pressed against the convex portion, a plurality of second magnetic pieces, made of a magnetic material, and a plurality of temperature control pieces.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: September 13, 2022
    Assignee: SEVEN UNIVERSE INDUSTRIAL CO., LTD.
    Inventor: Pao-Chi Chang
  • Publication number: 20220065449
    Abstract: The present invention provides a gas safety device using low power to control high flow, which includes a controller, a differential pressure regulating valve, and a driver, the controller can control if the gas can flow into the differential pressure regulating valve, the differential pressure regulating valve is connected to the controller, and can control if the gas can flow out for burning according to the gas pressure changes, the driver uses a drive piece to drive a micro switch lever inside the controller, so that the controller can output gas, thus, the present invention can control high gas flow with low power while maintaining safe usage of the gas.
    Type: Application
    Filed: December 22, 2020
    Publication date: March 3, 2022
    Inventors: PAO-CHI CHANG, PING-YANG WU
  • Publication number: 20210199207
    Abstract: An overflow and overheat shutoff safety gas inlet connector, comprising a gas inlet connector, to be connected to the gas source, with a gas inlet hole configured axially, a chamber configured on one end to be connected to the gas inlet hole, and a plurality of holding compartments configured on one side of the chamber, a connecting tube, in threaded connection with the gas inlet connector, with a convex portion on its one end, a transfer canal configured axially and going through the convex portion, said transfer canal matching the gas inlet hole, a first magnetic piece, made of a magnetic material, movably configured inside the chamber and matching the gas inlet hole and the transfer canal, able to seal the transfer canal when being pressed against the convex portion, a plurality of second magnetic pieces, made of a magnetic material, and a plurality of temperature control pieces.
    Type: Application
    Filed: July 23, 2020
    Publication date: July 1, 2021
    Inventor: PAO-CHI CHANG
  • Publication number: 20160370006
    Abstract: The present invention provides a connecting structure between gas assembly and gas transmission pipeline, comprising a gas transmission pipeline, a gas assembly and a gas assembly base. The gas transmission pipeline is for transmission of gas. The gas assembly is fixed on one end of the gas transmission pipeline, for configuration on a gas appliance. The gas assembly base is riveted on the outer side of one end of the gas assembly connecting the gas transmission pipeline, and abutted on a bulge loop preset on the outer side of the gas transmission pipeline; in this way, the gas transmission pipeline, gas assembly and gas assembly base can be fixed firmly together to avoid loosening or leakage.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 22, 2016
    Inventor: PAO-CHI Chang
  • Publication number: 20160179102
    Abstract: A shared valve unit with automatic switch of gas sources according to the input pressures of different gas sources with no need to change the nozzle includes a housing, a differential pressure component and two nozzles, said housing configured with a chamber and a gas flow passage, a gas inlet passage, communicated with the inlet end of said chamber and gas flow passage, a gas outlet passage, communicated with the outlet end of said chamber and gas flow passage, said differential pressure component configured inside said chamber, including a differential pressure diaphragm and a controlling device configured on said differential pressure diaphragm, with its one end configured with a sealing block to seal the gas outlet passage, an elastic component, abutting between one end of said housing and said differential pressure diaphragm, said two nozzles having different diameters, respectively preinstalled inside said gas flow passage and on the outlet end.
    Type: Application
    Filed: September 3, 2015
    Publication date: June 23, 2016
    Inventor: PAO-CHI Chang
  • Patent number: 9335053
    Abstract: The present invention provides an improved gas ignition switch, which comprises a gas switch main body, a closer assembly, a knob assembly, a pressing plate, a inching switch and an electronic ignition device, and the outside of the gas switch main body is further configured with an enclosure. The enclosure covers the inching switch and the corresponding pressing plate, so as to separate the corresponding positions of the inching switch and the pressing plate from the outside environment.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 10, 2016
    Assignee: SEVEN UNIVERSE INDUSTRIAL CO., LTD.
    Inventors: Pao-Chi Chang, Shu-Mei Liu
  • Publication number: 20150377354
    Abstract: The present invention provides a nozzle sealing structure for metal gas pipes, which comprises a metal gas pipe and a seal. The seal is to cover the nozzle of the metal gas pipe, and has appropriate elasticity. Its outer side is configured with a conical surface. The seal is elastically fixed inside the nozzle of the metal gas pipe through the conical surface. The structure features easy assembly, perfect sealing, no pollution to the environment, and no harm to human health.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Inventors: Pao-Chi CHANG, Chin-Chu LIU
  • Publication number: 20150007685
    Abstract: The present invention provides a button set for gas valve, which is characterized by that, multiple oil chambers are set on inner wall of the axle hole of the axle hole on the upper cover of the button set in relation to the surface of the rotating axle; this could accommodate lubricant and reduce the contact area between the rotating axle and axle hole, thus improving the rotating smoothness of the rotating axle within the axle hole and reducing the machining accuracy.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 8, 2015
    Inventor: Pao-Chi CHANG
  • Patent number: 8774418
    Abstract: A down-mixing device is provided. 5.1-channel sounds are down-mixed into 4-channel sounds with high-quality multi-channel surrounding sound effect reappeared. A common-acoustic-pole and zero (CAPZ) model is used to rebuild frequency responses of original head-related transfer functions (HRTF). Direct sounds, reflection sounds and late reverberation in a spatial sound field are gathered. Thus, varieties of sounds become rich and 3-dimensional hearing experiences are enhanced with low cost for a 4-channel earphones system.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 8, 2014
    Assignee: National Central University
    Inventors: Pao-Chi Chang, Tai-Ming Chang, Yi-Ming Shiu
  • Publication number: 20140072918
    Abstract: The present invention provides an improved gas ignition switch, which comprises a gas switch main body, a closer assembly, a knob assembly, a pressing plate, a inching switch and an electronic ignition device, and the outside of the gas switch main body is further configured with an enclosure. The enclosure covers the inching switch and the corresponding pressing plate, so as to separate the corresponding positions of the inching switch and the pressing plate from the outside environment.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Inventors: Pao-Chi CHANG, Shu-Mei Liu
  • Publication number: 20130182853
    Abstract: A down-mixing device is provided. 5.1-channel sounds are down-mixed into 4-channel sounds with high-quality multi-channel surrounding sound effect reappeared. A common-acoustic-pole and zero (CAPZ) model is used to rebuild frequency responses of original head-related transfer functions (HRTF). Direct sounds, reflection sounds and late reverberation in a spatial sound field are gathered. Thus, varieties of sounds become rich and 3-dimensional hearing experiences are enhanced with low cost for a 4-channel earphones system.
    Type: Application
    Filed: March 9, 2012
    Publication date: July 18, 2013
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Pao-Chi Chang, Tai-Ming Chang, Yi-Ming Shiu
  • Publication number: 20130142338
    Abstract: The present invention provides an apparatus with sound source localization. Spatial information and original audios are synthesized by a mono signal analyzer/synthesizer of a multi-channel system to obtain a three-dimensional (3D) virtual reality sound effect. By extracting and synthesizing spatial parameters, only original audio objects and spatial location data are required to obtain an effect of multi-channel spatial audio. Thus, a multi-channel playback system is formed with a small bit stream in transference to obtain Doppler effect on simulating moving of audio objects in real life.
    Type: Application
    Filed: January 18, 2012
    Publication date: June 6, 2013
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Pao-Chi Chang, Kuo-Lun Huang, Tai-Ming Chang
  • Publication number: 20120304976
    Abstract: The present invention provides a safety control device of gas oven, which is connected with an oven door of the gas oven, a burner and a gas pipeline; it comprising: a main body and a control unit, of which the main body is provided with a gas inlet and several gas outlets; the control unit is flexibly set into the main body and connected with the oven door, so as to control if the gas inlet is connected with the gas outlet; with this design, it enables gas supply to the oven and guarantee its operating safety by controlling the oven door.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 6, 2012
    Inventors: Pao-Chi Chang, Shu-Mei Liu
  • Publication number: 20120168656
    Abstract: The present invention provides a solenoid switch, which comprising: a valve body, a solenoid valve, a controller and a nozzle; the valve body consists of a valve chamber and a gas inlet/outlet connected with the valve chamber; a first pipe orifice is arranged on the location of the gas outlet connected with the valve chamber; the solenoid valve is arranged on the valve chamber correspondingly with the first pipe orifice, and used to control if the gas outlet is connected with the valve chamber; the controller is extended into the gas inlet, so as to control if gas flows from the gas inlet into the valve chamber; the nozzle is set at one end of the gas outlet.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Inventors: Pao-Chi CHANG, Shu-Mei Liu
  • Publication number: 20120118188
    Abstract: The present invention provides a gas switch, which comprising: a main body, a closer set, a knob group and a primer igniter; of which, a recessed chamber is bent onto the inner wall of the main body; a driving part, arranged at one end of the closer set correspondingly to the knob group and extended into the recessed chamber, consisting of at least two driving portions correspondingly to the hammer of the piezoelectric primer; with this design, when the driving part is driven by the knob group, the driving portions could push continuously the hammer of the primer igniter to impinge on the piezoelectric primer, such that the primer igniter could perform over two continuous ignition during a single stroke of the knob group.
    Type: Application
    Filed: September 22, 2011
    Publication date: May 17, 2012
    Inventors: Pao-Chi Chang, Shu-Mei Liu
  • Patent number: 8104507
    Abstract: A gas switch capable of adjusting fire intensity finely includes a gas switch capable of adjusting fire intensity finely, comprising a switch body inside which a guide is installed, a valve set that revolves inside the switch body and includes a hollow valve and a pilot valve moving elastically through the valve, a drive component installed inside the switch body, which contains a rotating rod that can move along and rotate round the same shaft of the valve set, a guide rod placed on the rotating rod and leaning on the guide, a regulating block installed movably at one end of the rotating rod and leaning against the pilot valve, and a connecting component for linking the drive component with the valve set flexibly.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: January 31, 2012
    Assignee: Seven Universe Industrial Co., Ltd.
    Inventors: Pao-Chi Chang, Sen-Yu Wu, Shu-Mei Liu
  • Patent number: 8077777
    Abstract: A video compressor has a real-time compression with a constant frame rate. The complexity in the compression of each frame is controlled to be smaller than a maximum value according to power management or compression time requirement. Delay jitter is eliminated. The present invention can be applied to MPEG-like video coding systems, such as H.264, MPEG4 and H.263.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: December 13, 2011
    Assignee: National Central University
    Inventors: Ming-Chen Chien, Pao-Chi Chang
  • Patent number: 7810517
    Abstract: A multiple-input gas adjuster includes a case having a chamber therein, an input channel, an output channel communicated with the chamber, a first input bore and a second input bore communicated with the input channel and the chamber. A pressure adjusting mechanism has a film assembly, a movable shaft to be reciprocated by the film assembly, a swing device pivoted in the case with an end thereof connected to the movable shaft and an opposite end for sealing the second input bore, and a driving device received in the first input bore and connected to the movable shaft for reciprocation to seal the first input bore. High pressure gas may flows into the first and second input bores through the input channel for pressure adjusting operation. With the action of the pressure adjusting mechanism, the present invention provides a well pressure reducing and stabilizing performance.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: October 12, 2010
    Assignee: Seven Universe Industrial Co., Ltd.
    Inventors: Pao-Chi Chang, Sen-Yu Wu, Shu-Mei Liu
  • Publication number: 20100178623
    Abstract: A gas switch capable of adjusting fire intensity finely includes a gas switch capable of adjusting fire intensity finely, comprising a switch body inside which a guide is installed, a fastener set that revolves inside the switch body and includes a hollow fastener and a fastener rod moving elastically through the faster, a drive component installed inside the switch body, which contains a rotating rod that can move along and rotate round the same shaft of the fastener set, a guide rod placed on the rotating rod and leaning on the guide, a regulating block installed movably at one end of the rotating rod and leaning against the fastener rod, and a connecting component for linking the drive component with the fastener set flexibly.
    Type: Application
    Filed: February 18, 2009
    Publication date: July 15, 2010
    Inventors: Pao-Chi Chang, Sen-Yu Wu, Shu-Mei Liu