Patents by Inventor Wen-Cheng Chang

Wen-Cheng 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: 9206830
    Abstract: A flexible positioning post includes a base, a metal post and a plurality of metal elastic pieces. The base has an upper surface. The metal post has a first end and a second end opposite to each other, and the first end is connected to the upper surface of the base. Each of the metal elastic pieces has a fixed end and a free end opposite to each other. The fixed end is securely assembled at the second end of the metal post, and the free end is adjacent to the upper surface of the base and bent toward the metal post to form a bending portion. Consequently, upon receiving a foreign force, the free end of each of the metal elastic pieces is moved toward the metal post; conversely, once the foreign force is removed, the free end of each of the metal elastic pieces is moved resiliently.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: December 8, 2015
    Assignee: WISTRON CORPORATION
    Inventors: Kuo-Cheng Lu, Wen-Cheng Chang
  • Patent number: 9114750
    Abstract: A hand puller with a rope reel contains a body and a reel. The body includes a fixing holder, a first rotary shaft, a rotating handle, two ratchet wheels, and at least one stopping piece. The rotating handle having a pushing plate, and the first rotary shaft has two driving gears. The reel includes a seat, a second rotary shaft, two driven gears, and a chain roller. The body includes a first connecting portion with plural holes, and the seat has a second connecting portion and a plurality of apertures. The reel and the body are movably coupled together, and the second connecting portion of the reel is aligned and overlapped with the first connecting portion of the body. At least one pin is inserted into at least one of the plural holes of the first connecting portion and the plurality of apertures of the second connecting portion.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: August 25, 2015
    Assignee: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang
  • Publication number: 20150151664
    Abstract: A hand puller with a rope reel contains a body and a reel. The body includes a fixing holder, a first rotary shaft, a rotating handle, two ratchet wheels, and at least one stopping piece. The rotating handle having a pushing plate, and the first rotary shaft has two driving gears. The reel includes a seat, a second rotary shaft, two driven gears, and a chain roller. The body includes a first connecting portion with plural holes, and the seat has a second connecting portion and a plurality of apertures. The reel and the body are movably coupled together, the second connecting portion of the reel is aligned and overlapped with the first connecting portion of the body, and at least one pin is inserted into at least one opening of the first connecting portion and the plurality of apertures of the second connecting portion.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 4, 2015
    Inventor: Wen Cheng Chang
  • Publication number: 20150139755
    Abstract: A flexible positioning post includes a base, a metal post and a plurality of metal elastic pieces. The base has an upper surface. The metal post has a first end and a second end opposite to each other, and the first end is connected to the upper surface of the base. Each of the metal elastic pieces has a fixed end and a free end opposite to each other. The fixed end is securely assembled at the second end of the metal post, and the free end is adjacent to the upper surface of the base and bent toward the metal post to form a bending portion. Consequently, upon receiving a foreign force, the free end of each of the metal elastic pieces is moved toward the metal post; conversely, once the foreign force is removed, the free end of each of the metal elastic pieces is moved resiliently.
    Type: Application
    Filed: February 12, 2014
    Publication date: May 21, 2015
    Applicant: Wistron Corporation
    Inventors: Kuo-Cheng LU, Wen-Cheng CHANG
  • Patent number: 8995102
    Abstract: A display and an electrostatic discharge protection apparatus are disclosed, wherein the display includes a display module, a flex flat cable, a motherboard, and an electrostatic discharge protection apparatus. The flex flat cable is electrically connected with the display module and the motherboard; the electrostatic discharge protection apparatus is disposed between the flex flat cable and the display module. The electrostatic discharge protection apparatus has an isolation board and at least one isolation pad, the isolation board includes a first surface and a second surface, and at least one part of the first surface is attached to the flex flat cable; the isolation pad comprises a first isolation surface, and the first isolation surface is combined with the second surface.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: March 31, 2015
    Assignee: Wistron Corporation
    Inventors: Kuo-Cheng Lu, Wen-Cheng Chang
  • Publication number: 20140183427
    Abstract: A rope rolling structure of a hand puller contains a fixing member and a rope roller. The fixing member includes a base, a central shaft assembly, two ratchet wheels, and a lower stopping piece. The base has a first segment and a second segment, and the first segment has two opposite orifices. The central shaft assembly is pivoted with the two opposite orifices. Each ratchet wheel includes plural ratchets. The lower stopping piece is fixed on the base and engages with or disengages from one of the plural ratchets. The rope roller has a rolling post and two stop disks, the rolling post has an opening, each stop disk has two apertures, such that the rope roller inserts into and retains with the central shaft assembly by using the two apertures, so when the central shaft assembly rotates, the rope roller is driven by the central shaft assembly to rotate.
    Type: Application
    Filed: November 5, 2013
    Publication date: July 3, 2014
    Applicant: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang
  • Publication number: 20140055893
    Abstract: A display and an electrostatic discharge protection apparatus are disclosed, wherein the display includes a display module, a flex flat cable, a motherboard, and an electrostatic discharge protection apparatus. The flex flat cable is electrically connected with the display module and the motherboard; the electrostatic discharge protection apparatus is disposed between the flex flat cable and the display module. The electrostatic discharge protection apparatus has an isolation board and at least one isolation pad, the isolation board includes a first surface and a second surface, and at least one part of the first surface is attached to the flex flat cable; the isolation pad comprises a first isolation surface, and the first isolation surface is combined with the second surface.
    Type: Application
    Filed: June 6, 2013
    Publication date: February 27, 2014
    Inventors: Kuo-Cheng LU, Wen-Cheng CHANG
  • Patent number: 8561267
    Abstract: A composite-material buckle contains a base including a first segment with an engaging face and a second segment, between the first segment and the second segment being defined two side walls having two symmetrical holes and two symmetrically elongated pivoting portions respectively; a shaft including two ends inserted into the two symmetrical holes respectively; a plastic press member including a pressing portion and an actuating portion secured, and between the pressing portion and the actuating portion being defined a through aperture, the plastic press member including an elastic arm; a metal member connected with the pressing portion of the plastic press member so that the metal member covers the pressing portion and contacts with the engaging face of the base, and the metal member including a number of retaining teeth arranged thereon.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: October 22, 2013
    Assignee: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang
  • Patent number: 8528849
    Abstract: A ratchet buckle has a body and a trigger. One end of the body has two opposite pivotal holes, two opposite positioning notches, and a pivotal shaft penetrating the pivotal holes. Two ends of the pivotal shaft each have a ratchet wheel synchronously rotating with the pivotal shaft. One end of the trigger has two opposite shaft holes engaged to the pivotal shaft of the body and has a positioning rod transversally mounted on the trigger to engage the two positioning notches of the body. By operating the trigger to set the pivotal shaft free, the pivotal shaft is easily rotated to reel a strap.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: September 10, 2013
    Assignee: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang
  • Patent number: 8499662
    Abstract: A pull handle structure of a hand puller contains a base including two opposite holes to insert two shafts respectively, with each hole including a ratchet. A pulling handle includes a rotating member with two side plates, each including first and second ends. Each first end includes an axial connecting portion on which a circular opening is formed so that the rotating member swings axially relative to the base. The side plate includes a sliding rail. Between the two side plates is defined a movable retaining element to contact with the ratchet. A movable bar includes two elongated stems and a grip rod defined between the two elongated stems. Each elongated stem is fitted in the sliding rail to move slidably. Between the rotating member and the movable bar is defined a locking device to obtain a positioning purpose when the movable bar is expanded and retracted.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: August 6, 2013
    Assignee: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang
  • Publication number: 20130180085
    Abstract: A composite-material buckle contains a base including a first segment with an engaging face and a second segment, between the first segment and the second segment being defined two side walls having two symmetrical holes and two symmetrically elongated pivoting portions respectively; a shaft including two ends inserted into the two symmetrical holes respectively; a plastic press member including a pressing portion and an actuating portion secured, and between the pressing portion and the actuating portion being defined a through aperture, the plastic press member including an elastic arm; a metal member connected with the pressing portion of the plastic press member so that the metal member covers the pressing portion and contacts with the engaging face of the base, and the metal member including a number of retaining teeth arranged thereon.
    Type: Application
    Filed: January 16, 2012
    Publication date: July 18, 2013
    Inventor: Wen Cheng Chang
  • Patent number: 8402611
    Abstract: A positioning hook structure for a hand puller contains a base including a first and a second ends. A rotating member includes a first segment axially connected with the second end and a second segment having a handle. A central shaft set is axially coupled with the first segment and the second end. Two ratchets includes teeth arranged therearound and fixed onto one end of the central shaft set. The base includes a movable retaining member to abut against one of the teeth. The rotating member includes a movable pulling rod to abut against another tooth of the ratchet. A positioning hook includes third and fourth ends, with the third end including two sides including two insertions, and with the fourth end including a hooking portion extending outward. Thus, the positioning hook inserts in the holes of the base by using the insertions.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: March 26, 2013
    Assignee: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang
  • Publication number: 20120167707
    Abstract: A pull handle structure of a hand puller contain a base including two opposite holes to insert two shafts respectively, each hole including a ratchet; a pulling handle including a rotating member with two side plates, each including a first and a second ends, the first end including an axial connecting portion on which a circular opening is formed so that the rotating member swings axially relative to the base, the side plate including a sliding rail, between the two side plates being defined a movable retaining element to contact with the ratchet; a movable bar including two elongated stems and a grip rod defined between the two elongated stems, and the elongated stem being fitted in the sliding rail to move slidably, between the rotating member and the movable bar being defined a locking device to obtain a positioning purpose when the movable bar is expended and retracted.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 5, 2012
    Inventor: Wen Cheng Chang
  • Publication number: 20120084951
    Abstract: A positioning hook structure for a hand puller contains a base including a first and a second ends; a rotating member including a first segment axially connected with the second end and a second segment having a handle; a central shaft set being axially coupled with the first segment and the second end; two ratchets including teeth arranged therearound and fixed onto one end of the central shaft set; the base including a movable retaining member to abut against one of the teeth, the rotating member including a movable pulling rod to abut against another tooth of the ratchet; a positioning hook including a third and a fourth ends, the third end including two sides including two insertions, the fourth end including a hooking portion extending outward so that the positioning hook inserts to the holes of the base by using the insertions.
    Type: Application
    Filed: November 11, 2010
    Publication date: April 12, 2012
    Inventor: Wen Cheng Chang
  • Publication number: 20120074363
    Abstract: A hand puller and a central shaft structure thereof contains a base including a first and a second sides having a fixed pillar with a fixed rope and a controlling portion with an axial hole respectively, and including a removable retaining member; a pulling member including a first and a second segments having an axial connecting portion with an axial bore and a holding portion individually, and including a movable rod; two ratchets, each including plural teeth and an orifice to match with the central shafts; wherein the retaining member and the movable rod contact with the ratchet respectively, the central shaft is solid, made of a metal bar material, and includes two ends between which an outer surface is defined, and each end of the central shaft includes a limiting member higher than the outer surface so that the base and the ratchets are positioned on the central shafts.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 29, 2012
    Inventor: Wen Cheng Chang
  • Publication number: 20120073097
    Abstract: A ratchet buckle has a body and a trigger. One end of the body has two opposite pivotal holes, two opposite positioning notches, and a pivotal shaft penetrating the pivotal holes. Two ends of the pivotal shaft each have a ratchet wheel synchronously rotating with the pivotal shaft. One end of the trigger has two opposite shaft holes engaged to the pivotal shaft of the body and has a positioning rod transversally mounted on the trigger to engage the two positioning notches of the body. By operating the trigger to set the pivotal shaft free, the pivotal shaft is easily rotated to reel a strap.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 29, 2012
    Inventor: Wen Cheng Chang
  • Publication number: 20110061213
    Abstract: A hand puller with the structure of double stopping plates is disclosed. An axle part goes through a fixing part and a pulling part. Both ends of the axle part have a ratchet, respectively. The fixing part has two stopping plates, fixed to the two opposite sides of the axle part. The pulling part has a driving claw. The driving claw and the stopping plates of the fixing part engage with the ratchet.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 17, 2011
    Applicant: WIN CHANCE METAL CO., LTD.
    Inventor: Wen-Cheng Chang
  • Patent number: 7651072
    Abstract: A cable tightening device includes a fixed unit including a base, a rotation member rotatably mounted on a first end of the base, a movable unit including a movable member rotatably mounted on the rotation member and movable relative to the base, and a holding member secured on a second end of the base. Thus, the base of the fixed unit is integrally combined with the holding member without having to provide a bolt and a nut, thereby decreasing the costs of fabrication. In addition, the holding member is integrally combined with the base of the fixed unit by punching so that the holding member will not detach from the base of the fixed unit, thereby facilitating operation of the cable tightening device.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: January 26, 2010
    Inventor: Wen-Cheng Chang
  • Patent number: 7448596
    Abstract: A cable tightening device includes a fixed unit, a rotation member rotatably mounted on the fixed unit, a movable unit including a movable member to drive the rotation member and a release member to lock or unlock the movable member, and a locking unit to lock the release member onto the movable member releasably. Thus, the release member is locked onto the movable member by the locking unit and cannot be pulled upwardly to detach the push plates of the movable unit from the ratchet wheels of the fixed unit so that the ratchet wheels are locked to lock the rotation member to prevent the cable from being loosened so as to protect the cargo wound by the cable, thereby achieving the anti-theft purpose.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: November 11, 2008
    Inventor: Wen-Cheng Chang
  • Patent number: D657217
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: April 10, 2012
    Assignee: Win Chance Metal Co., Ltd.
    Inventor: Wen Cheng Chang