Patents by Inventor Chao-Fu Chang

Chao-Fu 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).

  • Publication number: 20200378388
    Abstract: A contra-rotating fan structure includes a first base, a first fan, a second base, and a second fan. The first fan is rotatably disposed on the first base and includes a first hub. The first hub has a first largest width. The second fan is rotatably disposed on the second base and includes a second hub. The second hub has a second largest width. The first base and the second base are located between the first fan and the second fan. The second largest width is greater than the first largest width.
    Type: Application
    Filed: October 8, 2019
    Publication date: December 3, 2020
    Inventors: Chien-Hung CHEN, Chao-Fu YANG, Chien-Chih HUANG, Yueh-Lung HUANG, Shun-Chen CHANG
  • Patent number: 10740122
    Abstract: A system module applied to the machine controller for simulating a machine operation screen based on a non-invasive data-extraction system, is disclosed. An image capture device of the system module can receive an original operation screen outputted from the machine controller, and transmit the original operation screen to the non-invasive data-extraction system and a high-speed image process unit for extraction of the information shown on the operation screen. The software control system can extract the operational information of the machine controller in real time, to create a machine operation flow for generating a simulated machine operation screen which is then outputted to a screen of the machine controller. As a result, the site working staff can be provided with operational information associated with the machine in real time, for example, the operational information includes currently executed operation screen, position of mouse cursor and pop-up window detection result.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: August 11, 2020
    Assignee: Adlink Technology Inc.
    Inventors: Chua-Hong Ng, Chao-Tung Yang, Wei-Hung Chen, Tsan-Ming Yu, Shih-Hsun Lin, Yang-Chung Tseng, Chih-Fu Hsu, Chien-Hsun Tu, Ren-Yu Wu, Chieh-Yuan Lo, Chih-Kai Shiao, Hsiao-Ling Chang, Te-Cheng Tseng, Chun-Liang Chen
  • Publication number: 20200166047
    Abstract: A fan impeller includes a hub, a shaft, a metal housing, a magnetic ring and a plurality of blades. The outer periphery of the hub has a curved surface. The shaft is disposed in the hub and connected to the hub. The metal housing has an annular shape and is disposed in the hub. The magnetic ring is disposed at the inner side of the metal housing. The blades are disposed around the outer periphery of the hub.
    Type: Application
    Filed: October 3, 2019
    Publication date: May 28, 2020
    Inventors: Shun-Chen CHANG, Chao-Fu YANG
  • FAN
    Publication number: 20200124051
    Abstract: A fan includes a frame, an impeller and a motor. The frame includes a base, a frame housing and a plurality of static blades. The frame housing includes an outlet. The static blades are disposed around the outer periphery of the base and connect between the base and the frame housing. A distance is provided between the outlet and the ends of the static blades located adjacent to the outlet, and the static blades are not protruding from the outlet. The impeller includes a hub and a plurality of rotor blades. The hub has a curved surface. The slopes of the straight lines connecting any two points on the curved surface are not equal. The rotor blades are disposed around the outer periphery of the hub. The motor is disposed on the base, and connects with and drives the impeller to rotate.
    Type: Application
    Filed: June 10, 2019
    Publication date: April 23, 2020
    Inventors: Shun-Chen CHANG, Chao-Fu YANG
  • Publication number: 20200116159
    Abstract: An impeller includes a hub and blades. In radial direction, an upper surface of the blade near the outer edge includes a groove structure, a lower surface of the blade relating to the groove structure includes a peak structure, the lower surface of the blade includes a recess structure aside the trailing edge or the leading edge. The recess structure is connected to the peak structure. The blade has at least five airfoils from the inner edge to the outer edge. The blade is defined by continuously connecting the at least five airfoils at different sections in sequence so as to form the groove structure and the peak structure respectively on the upper surface and the lower surface. The groove structure and the peak structure are aside the outer edge of the blade.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventors: Chao-Fu YANG, Li-Han HUNG, Jen-Bo HUANG, Shun-Chen CHANG, Kuo-Tung HSU
  • Publication number: 20200073492
    Abstract: A touch apparatus including a control button and a touch panel is provided. The control button includes an insulating main body and a conductive member disposed on the insulating main body. The touch panel is disposed on a side of the control button, and the touch panel includes a cover plate and a touch-sensing element. The conductive member is located between the insulating main body and the cover plate. The cover plate is located between the control button and the touch-sensing element. The touch-sensing element is electrically insulated from the conductive member. The touch-sensing element includes a plurality of electrodes disposed corresponding to the control button. The conductive member moves along with the movement of the insulating main body, and the movement of the conductive member causes a capacitance change of at least one of the plurality of electrodes.
    Type: Application
    Filed: November 19, 2018
    Publication date: March 5, 2020
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Kun-Chi Chiu, Chun-Chung Wu, Chao-Wei Wei, Chi-Lun Wu, Wei-Fu Chang
  • Patent number: 10539149
    Abstract: An impeller comprises a hub and a plurality of blades surrounding the hub. The hub comprises a shaft. Each blade includes a leading edge, an outer edge, a middle portion and a trailing edge. The leading edge, the outer edge and the trailing edge are around three sides of the middle portion. From the hub outwardly shaft, the height of the leading edge to the horizontal plane of the lowest of the blade gradually decreases first and then gradually increases.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 21, 2020
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Shun-Chen Chang, Chao-Fu Yang
  • FAN
    Publication number: 20190390680
    Abstract: A fan includes a frame, an impeller, and a motor. The impeller includes a hub, blades, and air-guiding plates. The hub has a tapered shape and the width of the hub gradually increases. The hub has an air vent. The blades are disposed around the outer periphery of the hub. The air-guiding plates are disposed around the inner periphery of the hub. The motor is disposed in the frame, and connects to and drives the impeller to rotate. The motor includes a stator structure and a rotor structure. The rotor structure includes a shaft, a magnetic conductive housing, and a magnetic element. One end of the shaft connects to the magnetic conductive housing. The magnetic element is disposed around the inner periphery of the magnetic conductive housing and located corresponding to the stator structure. The top surface of the magnetic conductive housing has at least one opening.
    Type: Application
    Filed: January 7, 2019
    Publication date: December 26, 2019
    Inventors: Shun-Chen CHANG, Chao-Fu YANG, Chien-Hung CHEN, Chien-Chih HUANG
  • Patent number: 10440851
    Abstract: An apparatus for reverse mounting an electronic device in a server housing is provided. The apparatus includes a first bracket, a second bracket, and a coupling. The first bracket couples to the device body and extends outward from the device body toward a front rail of the server housing. The first bracket includes a first end configured to releasably couple to front rail of the server housing. The second bracket includes a protrusion that extends outward from the device body in an opposite direction relative to the first bracket. The coupling includes a first portion that couples to a rear rail of the server housing and a second portion defining a channel that receives the protrusion of the second bracket.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 8, 2019
    Assignee: QUANTA COMPUTER INC.
    Inventors: Chao-Jung Chen, Chih-Ming Chen, Yaw-Tzorng Tsorng, Ta-Chih Chen, Chi-Fu Chen, Hou-Hsien Chang
  • Publication number: 20190154042
    Abstract: A mixed flow fan includes a bottom base, an outer cover disposed on the bottom base, a motor disposed on the base, and a hub located between the outer case and the motor. The hub includes a first outer surface and a second outer surface connected to the first outer surface and inclined relative to the first outer surface. The slope of the first outer surface relative to the central axis is greater than the slope of the second outer surface relative to the central axis. The base includes a side surface adjacent to the second outer surface. The slope of the side surface relative to the central axis is equal to the slope of the second outer surface relative to the central axis.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 23, 2019
    Inventors: Shun-Chen CHANG, Shih-Di CHEN, Chao-Fu YANG
  • Publication number: 20120065604
    Abstract: A degradable hemostatic sponge that can be self-degraded and absorbed by a human body has poly lactic acid as its main material and mixed with a moisture-absorbent material, such as collagen, chitosan, starch and the like, at a specific ratio. Given grinding, mixing and melting steps, the materials using a supercritical fluid as a foaming agent can be used to manufacture the degradable hemostatic sponge having an open-cell microcellular form by a continuous extrusion foaming process. In addition, the present invention also includes a system and a method for manufacturing the degradable hemostatic sponge.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 15, 2012
    Inventors: Chao-Fu Chang, Kent Kuohua Chang
  • Publication number: 20120065741
    Abstract: A guided tissue regeneration membrane has a top surface, a bottom surface and a plurality of through holes formed through the top and bottom surfaces. Each of the plurality of through holes has a base opening on the top surface and a tip opening on the bottom surface. The diameter of the base opening is larger than that of the tip opening. The guided tissue regeneration membrane is placed between a hard tissue and a soft tissue of gums with the top surface thereof facing the hard tissue so as to hinder the soft tissue from rapidly growing. The tip openings are available for the soft tissue to supply nutrient to the hard tissue therethrough. The hard tissue can grow from the base openings, through the corresponding through holes and to the soft tissue to repair periodontal tissue.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 15, 2012
    Inventors: Chao-Fu Chang, Kent Kuohua Chang