Patents by Inventor Wen-Tung Chang

Wen-Tung 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: 20230134589
    Abstract: A shoe rack includes a frame, at least one board, two rear connectors and two front connectors. The frame includes two lateral subframes each of which comprises at least one tilted beam. Each of the rear connectors includes a shaft rotatably connected to the board and a clip engaged with the tilted beam of one of the lateral subframes. Each of the front connectors includes a shaft rotatably connected to the board, a first clip, and a second clip located closer to the shaft than the first clip. The board extends horizontally when the first clip is engaged with the tilted beam of one of the lateral subframes. The board is tilted when the second clip is engaged with the tilted beam of one of the lateral subframes.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 4, 2023
    Inventor: WEN-TUNG CHANG
  • Patent number: 11627803
    Abstract: A shoe rack includes a frame, at least one board, two rear connectors and two front connectors. The frame includes two lateral subframes each of which comprises at least one tilted beam. Each of the rear connectors includes a shaft rotatably connected to the board and a clip engaged with the tilted beam of one of the lateral subframes. Each of the front connectors includes a shaft rotatably connected to the board, a first clip, and a second clip located closer to the shaft than the first clip. The board extends horizontally when the first clip is engaged with the tilted beam of one of the lateral subframes. The board is tilted when the second clip is engaged with the tilted beam of one of the lateral subframes.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: April 18, 2023
    Inventor: Wen-Tung Chang
  • Patent number: 10800711
    Abstract: A ceramic and plastic composite and a method for fabricating the same are disclosed. A chemical cleaning treatment, a microetching treatment, a hole reaming treatment, and a surface activating treatment are performed on the surface of a ceramic matrix to form nanoholes with an average diameter ranging between 150 nm and 450 nm. Plastics are injected onto the surface of the baked ceramic matrix to form a plastic layer. The plastic layer more deeply fills the nanoholes to have higher adhesion. Thus, the higher combined strength and air tightness exist between the ceramic matrix and the plastic layer to improve the reliability and the using performance of the ceramic and plastic composite.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: October 13, 2020
    Assignees: COXON PRECISE INDUSTRIAL CO., LTD, SINXON PLASTIC (DONG GUAN) CO., LTD, DONG GUAN CHENG DA METAL PRODUCT CO., LTD, DONG GUAN CHENSONG PLASTIC CO., LTD
    Inventors: Wen-Tung Chang, Jong-Yi Su
  • Publication number: 20200318343
    Abstract: A scratch-protective, air-permeable and waterproofed protective sheet includes a buffering air-permeable layer, and a first and second scratch-protective combining layer which are laminated respectively on a surface of the buffering air-permeable layer. The buffering air-permeable layer, and the first and second scratch-protective combining layer are air permeable. The buffering air-permeable layer is a non-woven fabric, a fiber material chosen among polyethylene fiber, polyolefin fiber, polyester fiber, cellulose fiber, regenerated cellulose fiber, polyamide fiber, mineral fiber and metallic fiber; whereas, the first and second scratch-protective combining layer are a plastic rubber elastomer chosen from PVC, polyolefin, TPU, TPO, SBS, SEBS, ABS, NBR, CR, Hypalon, natural rubber, IIR, cross-linking elastomer or blend thereof.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 8, 2020
    Inventors: Cheng-Chung CHIU, Wen-Tung CHANG, Ping-Sen LIAO
  • Patent number: 10716422
    Abstract: A disposable liquid-binding floor mat includes a water penetration layer, a water absorption layer, a water-proof layer and a self-adhesive layer. The water penetration layer is a thin piece of non-woven fabric and is superimposed on the water absorption layer. The water absorption layer is made of a hydrophilic thin plate and is superimposed between the water penetration layer and the water-proof layer. The water-proof layer is made of a water-proof film material and is superimposed between the water absorption layer and the self-adhesive layer. The self-adhesive layer is made of a self-adhesive material and is superimposed below the water-proof layer. The water penetration layer, the water absorption layer, the water-proof layer and the self-adhesive layer are bonded as an integrated non-sealed edge structure, and a deodorant is added into the water absorption layer.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: July 21, 2020
    Assignees: WEB-PRO CORPORATION
    Inventors: Cheng-Chung Chiu, Wen-Tung Chang
  • Publication number: 20200148602
    Abstract: A ceramic and plastic composite includes a ceramic matrix and a plastic layer. Plastics are injected onto the surface of the baked ceramic matrix to form a plastic layer. The plastic layer more deeply fills nanoholes distributed on the surface of the ceramic matrix to have higher adhesion. Thus, the higher combined strength and air tightness exist between the ceramic matrix and the plastic layer to improve the reliability and the using performance of the ceramic and plastic composite.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Inventors: Wen-Tung CHANG, Jong-Yi SU
  • Patent number: 10415962
    Abstract: A non-contact and optical measuring automation system, configured to electrically connect to a computer to measure the profile accuracy of a disk cam, includes a base, a rotating chuck, a moving stage module and a laser displacement meter. The rotating chuck is disposed for clamping the disk cam. The moving stage module includes a first linear motion stage movable relative to the base in a first direction and a second linear motion stage movable relative to the first linear motion stage in a second direction. The computer is able to control the rotation of the rotating chuck and the movement of the moving stage module, and is able to control a beam emitted from the laser displacement meter projecting onto a profile surface of the disk cam so as to obtain a profile deviation value of the disk cam by using the laser triangulation method.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 17, 2019
    Assignee: National Taiwan Ocean University
    Inventors: Wen-Tung Chang, Chun-Cheng Lu, Hsiang-Lun Kao
  • Publication number: 20190261801
    Abstract: A disposable liquid-binding floor mat includes a water penetration layer, a water absorption layer, a water-proof layer and a self-adhesive layer. The water penetration layer is a thin piece of non-woven fabric and is superimposed on the water absorption layer. The water absorption layer is made of a hydrophilic thin plate and is superimposed between the water penetration layer and the water-proof layer. The water-proof layer is made of a water-proof film material and is superimposed between the water absorption layer and the self-adhesive layer. The self-adhesive layer is made of a self-adhesive material and is superimposed below the water-proof layer. The water penetration layer, the water absorption layer, the water-proof layer and the self-adhesive layer are bonded as an integrated non-sealed edge structure, and a deodorant is added into the water absorption layer.
    Type: Application
    Filed: August 13, 2018
    Publication date: August 29, 2019
    Inventors: Cheng-Chung CHIU, Wen-Tung CHANG
  • Publication number: 20190071369
    Abstract: A ceramic and plastic composite and a method for fabricating the same are disclosed. A chemical cleaning treatment, a microetching treatment, a hole reaming treatment, and a surface activating treatment are performed on the surface of a ceramic matrix to form nanoholes with an average diameter ranging between 150 nm and 450 nm. Plastics are injected onto the surface of the baked ceramic matrix to form a plastic layer. The plastic layer more deeply fills the nanoholes to have higher adhesion. Thus, the higher combined strength and air tightness exist between the ceramic matrix and the plastic layer to improve the reliability and the using performance of the ceramic and plastic composite.
    Type: Application
    Filed: May 14, 2018
    Publication date: March 7, 2019
    Inventors: Wen-Tung CHANG, Jong-Yi SU
  • Publication number: 20190063908
    Abstract: A non-contact and optical measuring automation system, configured to electrically connect to a computer to measure the profile accuracy of a disk cam, includes a base, a rotating chuck, a moving stage module and a laser displacement meter. The rotating chuck is disposed for clamping the disk cam. The moving stage module includes a first linear motion stage movable relative to the base in a first direction and a second linear motion stage movable relative to the first linear motion stage in a second direction. The computer is able to control the rotation of the rotating chuck and the movement of the moving stage module, and is able to control a beam emitted from the laser displacement meter projecting onto a profile surface of the disk cam so as to obtain a profile deviation value of the disk cam by using the laser triangulation method.
    Type: Application
    Filed: November 28, 2017
    Publication date: February 28, 2019
    Inventors: WEN-TUNG CHANG, CHUN-CHENG LU, HSIANG-LUN KAO
  • Patent number: 10151585
    Abstract: A non-contact and optical measuring automation system includes a base, a rotating chuck to clamp a disk cam, a moving stage module and an optical measuring module. The moving stage module includes a first linear motion stage movably disposed on the base, a second linear motion stage movably disposed on the first linear motion stage, and a rotary motion stage rotatably disposed on the second linear motion stage. The optical measuring module disposed on the rotary motion stage includes a laser-emitting unit and an image-capturing unit. The laser-emitting unit projects a light beam onto a cam surface of the disk cam, and the image-capturing unit receives scattering light to capture a grayscale measuring image including a profile speckle pattern. A computer calculates a profile speckle characteristic value according to the grayscale measuring image and the surface roughness value according to the profile speckle characteristic value.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: December 11, 2018
    Assignee: National Taiwan Ocean University
    Inventors: Wen-Tung Chang, Chun-Cheng Lu, Hsiang-Lun Kao
  • Patent number: 9677876
    Abstract: A non-destructive and optical measurement automation system for web thickness of microdrills and method thereof can obtain the measuring data corresponding to a certain section to be measured of a microdrill by means of automated optical measurement. Specifically speaking, the said system and method measure the section to be measured via an optical measuring plane formed by a measuring light beam, and the included angle between the optical measuring plane and the central axis of the microdrill is practically consistent with the helix angle of the microdrill. The said system and method then analyze the measuring data via a computer device to obtain the outer diameter and the depths of helical flutes corresponding to the section to be measured. Finally, the said system and method calculate the web thickness of the said section to be measured according to the outer diameter and the depths of helical flutes.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: June 13, 2017
    Assignee: National Taiwan Ocean University
    Inventors: Wen-Tung Chang, Jian-Hong Wu
  • Publication number: 20160187121
    Abstract: A non-destructive and optical measurement automation system for web thickness of microdrills and method thereof can obtain the measuring data corresponding to a certain section to be measured of a microdrill by means of automated optical measurement. Specifically speaking, the said system and method measure the section to be measured via an optical measuring plane formed by a measuring light beam, and the included angle between the optical measuring plane and the central axis of the microdrill is practically consistent with the helix angle of the microdrill. The said system and method then analyze the measuring data via a computer device to obtain the outer diameter and the depths of helical flutes corresponding to the section to be measured. Finally, the said system and method calculate the web thickness of the said section to be measured according to the outer diameter and the depths of helical flutes.
    Type: Application
    Filed: October 6, 2015
    Publication date: June 30, 2016
    Inventors: Wen-Tung CHANG, Jian-Hong WU
  • Patent number: 9296086
    Abstract: An improved destructive and visual measurement automation system and a method for measuring a web thickness of a microdrill are provided. When a dual-axis motion platform module moves the microdrill to a first position, a reflection module reflects a first image in a first direction toward a second direction. A vision module receives the reflected first image in the second direction and outputs the received first image to a computer. According to the first image, the computer performs a positioning procedure and a grinding procedure to drive a drill grinding module to grind the microdrill to a sectional position to be measured of the microdrill. When the microdrill is moved to a second position, the vision module outputs a second image to the computer. According to the second image, the computer performs an image computing procedure to obtain the web thickness at the sectional position to be measured.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: March 29, 2016
    Assignee: National Taiwan Ocean University
    Inventors: Wen-Tung Chang, Yu-Yun Lu
  • Publication number: 20160075358
    Abstract: A collapsible trolley includes a frame, a carrier plate, two wheel units, a primary grip and two auxiliary grip units. The frame includes two lower tubes and two upper tubes each pivotally connected to a corresponding one of the lower tubes. The carrier plate is connected to the lower tubes. Each of the wheel units is connected to a corresponding one of the lower tubes. The primary grip is supported on the upper tubes. Each of the auxiliary grip units is pivotally connected to a corresponding one of the upper tubes.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 17, 2016
    Inventors: Howard Simon, Wen Tung Chang
  • Publication number: 20150017879
    Abstract: An improved destructive and visual measurement automation system and a method for measuring a web thickness of a microdrill are provided. When a dual-axis motion platform module moves the microdrill to a first position, a reflection module reflects a first image in a first direction toward a second direction. A vision module receives the reflected first image in the second direction and outputs the received first image to a computer. According to the first image, the computer performs a positioning procedure and a grinding procedure to drive a drill grinding module to grind the microdrill to a sectional position to be measured of the microdrill. When the microdrill is moved to a second position, the vision module outputs a second image to the computer. According to the second image, the computer performs an image computing procedure to obtain the web thickness at the sectional position to be measured.
    Type: Application
    Filed: April 16, 2014
    Publication date: January 15, 2015
    Applicant: National Taiwan Ocean University
    Inventors: Wen-Tung CHANG, Yu-Yun LU
  • Patent number: 8602444
    Abstract: A hand cart has a frame having a left vertical member and right vertical member, each vertical member having a top end that is coupled to a handle bar, and a bottom end that has a pin extending therefrom. The hand cart also includes a left wheel assembly and a right wheel assembly, each wheel assembly having a tubular housing that receives a portion of a vertical member, and a wheel secured to the tubular housing, with each tubular housing having a spiral slot that receives the pin of the corresponding bottom end for movement within the slot. A carrier plate has a left seat and a right seat, each seat pivotably connected to a corresponding bottom end of a vertical member.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: December 10, 2013
    Assignee: Seville Classics Inc.
    Inventors: Wen-Tung Chang, Edwin Ho
  • Patent number: 8520066
    Abstract: An automated optical inspection system for the runout tolerance of circular saw blades comprises a rotating device, a first and a second optical inspection module, and a computing device. The rotating device is used to rotate a circular saw blade. The circular saw blade includes multiple teeth, and each tooth has a side and a back. The first/second optical inspection module is used to capture a side/back image of the tooth. The computing device activates the rotating device to rotate the circular saw blade, and activates the first and the second optical inspection module to capture the side image and the back image of each tooth upon rotation of the circular saw blade. The computing device performs a radial-position-calculating procedure according to the side images, to obtain an amount of radial runout, and performs an axial-position-calculating procedure according to the back images, to obtain an amount of axial runout.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: August 27, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventors: Wen-Tung Chang, Chin-Hsien Su, Dong-Xie Guo, Geo-Ry Tang, Fang-Jung Shiou
  • Publication number: 20130147163
    Abstract: A hand cart has a frame having a left vertical member and right vertical member, each vertical member having a top end that is coupled to a handle bar, and a bottom end that has a pin extending therefrom. The hand cart also includes a left wheel assembly and a right wheel assembly, each wheel assembly having a tubular housing that receives a portion of a vertical member, and a wheel secured to the tubular housing, with each tubular housing having a spiral slot that receives the pin of the corresponding bottom end for movement within the slot. A carrier plate has a left seat and a right seat, each seat pivotably connected to a corresponding bottom end of a vertical member.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Inventors: Wen-Tung Chang, Edwin Ho
  • Patent number: D677034
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: February 26, 2013
    Assignee: Seville Classics Inc.
    Inventors: Wen-Tung Chang, Edwin Ho