Patents by Inventor Shao-Han Chang

Shao-Han 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: 20150122634
    Abstract: An electrochemical machining apparatus includes a fastening bracket, a first drive member positioned on the fastening bracket, a connecting member, a first electrode connected to the connecting member, a second driving member, a second electrode connected to the second driving member, a moving assembly positioned on the fastening bracket, an electrolytic cell positioned on moving assembly, a pump, and a vacuum pump. The first electrode defines a plurality of liquid collecting grooves spaced from each other. Each liquid collecting grooves defines a plurality of second through holes. At least one liquid collecting groove is connected to the pump, and the other liquid collecting grooves are connected to the vacuum pump. The portion of the second electrode can be inserted into and depart from the second through holes.
    Type: Application
    Filed: October 17, 2014
    Publication date: May 7, 2015
    Inventor: SHAO-HAN CHANG
  • Publication number: 20150122636
    Abstract: An electrochemical machining device includes an electrode bundle, an electrode sleeve used for receiving the electrode bundle therein, and an electrolytic tank. The electrode bundle includes a number of columnar electrodes. Each of the columnar electrodes can move along an axial direction of the electrode sleeve. The electrode sleeve includes sidewalls, and two pressing plates positioned corresponding to two adjacent sidewalls. The sidewalls of the electrode sleeve include a number of screws to adjust a distance between the pressing plates and the corresponding sidewalls. The pressing plates can be moved to press the electrode bundle, and fix the electrode bundle between the pressing plates and the corresponding sidewalls of the electrode sleeve. A shape of the electrode bundle can be adjusted according to a shape of a molding surface.
    Type: Application
    Filed: September 25, 2014
    Publication date: May 7, 2015
    Inventor: SHAO-HAN CHANG
  • Patent number: 8998448
    Abstract: A LED tube lamp includes a heat sink, a LED substrate, a pair of connectors, and a cover fixed to the heat sink. The cover includes a first cover and a second cover, at least one optical lens is arranged on the first cover, the at least one optical lens comprises a concave lens and reflective lenses arranged on both sides of the concave lens. The concave lens is configured to refract light beams from the LEDs in a forward direction or in an approximate forward direction, the reflective lenses are configured to reflect light beams from the LEDs in a lateral direction. After the light beams are refracted by the optical lens, the light divergence angle of the LED tube lamp is increased.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: April 7, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Publication number: 20150083608
    Abstract: An electrolytic machining system includes a controller, a drive member coupled to the controller, a power supply, a diving circuit, a detecting circuit, and an electrode module. The diving circuit is coupled to the power supply module and configured to divide a total voltage taken from the power supply module into a plurality of independent working voltages. The detecting circuit is coupled to the dividing circuit and the electrode assembly. The detecting circuit detects each independent working voltage and feeds back information as to the level of the independent working voltage to the controller as the electrode assembly is moved towards a workpiece. When the detection indicates an incorrect working voltage, the controller controls the drive member to move the electrode assembly away from the workpiece.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 26, 2015
    Inventor: SHAO-HAN CHANG
  • Publication number: 20150062867
    Abstract: An electronic device includes a housing, a reflection member, a glass base board, a decoration pattern, a reflection membrane, a print circuit board, and a light emitting assembly. The reflection member is fixed with the housing and defines a through hole. The glass base board is positioned on the reflection member away from the housing. The decoration pattern is positioned on the glass base board. The reflection membrane is positioned on the glass base board around edges of the decoration pattern for shielding the glass base board and reflecting light. The print circuit board is received in the housing under the glass base board. The light emitting assembly includes a base board and a light source positioned on the base board. A first light emitting portion of the glass base board is positioned between the reflection membrane and the decoration pattern.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventor: SHAO-HAN CHANG
  • Publication number: 20150041331
    Abstract: An electrolytic machining system includes a controller, a feeding device coupled to the controller, a platform coupled to the controller and positioned opposite the feeding device, an electrolysis cell installed on the platform and configured to receive a workpiece, a cathode coupled to the drive member, a power supply module electrically coupled to the controller and the cathode, a processing tank communicating with the electrolysis cell, a pump communicating with the processing tank, and an electro-hydraulic servo valve communicating with the pump and the cathode and coupled to the controller. The controller can control the feeding device to translate in a direction toward and away from the workpiece in a processing gap, simultaneously control the electro-hydraulic servo valve to adjust a flux of the electrolytes passing through the electro-hydraulic servo valve to enable the electrolytes received in a machining area of the workpiece to have a stable hydraulic pressure.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 12, 2015
    Inventor: SHAO-HAN CHANG
  • Publication number: 20140290309
    Abstract: A mold includes a first mold, an second mold located upon the first mold, and a mold core located between the first mold and the second mold. The first mold defines a receiving space, and comprises a bottom surface in the receiving space. The bottom surface in the receiving space defines at least one guiding groove. A bottom surface in the at least one guiding groove defines at least one air outlet. The mold core is received in the receiving space and supported by the bottom surface in the receiving space. The mold core defines a mold cavity and a plurality of micro-holes communicating with the mold cavity and the at least one guiding groove.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 2, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20140204289
    Abstract: An electronic device includes a housing, a metallic support plate, a mounting frame, and a backlight module. The housing includes a side frame, and a mounting frame mounted on the side frame. The metallic support plate is received in the side frame. The backlight module includes a light source mounted on the metallic support plate, and a light guide plate mounted on the metallic support plate. The light guide plate is located between the metallic support plate and the mounting frame.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 24, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20140182512
    Abstract: A crystal growth apparatus includes a first housing, a second housing and a controller received in the second housing. The first housing includes a first main body and defines a growth chamber in the first main body. The second housing includes a second main body and a pulling rod. The second main body defines a transmission chamber and a cooling chamber. The pulling rod is mounted in the transmission chamber, and a first seed rod is mounted on the pulling rod. The controller includes a transmission member and a pair of partition assemblies. The second housing includes a separating sheet and a second seed rod. The separating sheet separates the transmission chamber from the growth chamber. The second seed rod is mounted in the cooling chamber. The pair of partition assemblies move enabling the cooling chamber to communicate with the transmission chamber, such that the transmission member exchanges seed rods.
    Type: Application
    Filed: December 16, 2013
    Publication date: July 3, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20140160648
    Abstract: A panel includes a display window and a supporting body integrated with the display window. The display window is made of sapphire and the supporting body is made of ceramic materials. The supporting body is integrally formed with the supporting body by sintering process. A method for manufacturing the panel is also provided.
    Type: Application
    Filed: November 22, 2013
    Publication date: June 12, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Patent number: 8591079
    Abstract: An LED ceiling lamp includes a primary illumination unit and at least one subsidiary illumination unit. The primary illumination includes a base and a connecting member to fix the base to a ceiling. Each of the at least one subsidiary illumination unit is fixed to the base and faces the ceiling. Each of the at least one subsidiary illumination unit comprises a circuit board with an LED unit, a lens and a reflector. The lens covers the circuit board. The circuit board and the lens are received in the reflector. The lens is configured for dividing the light beams from the LED units into several light groups. An aphotic area is formed between each two adjacent light groups. The reflector is configured for reflecting the several light groups on the ceiling.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: November 26, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8523405
    Abstract: An LED illuminating device comprises a housing with a base plate, a prism sheet and a circuit board. The prism sheet is mounted in the housing and comprises a number of V-shaped micro-grooves formed thereon along three directions intersecting with each other. The circuit board is fixed on the base plate, wherein a plurality of LED units are arranged on the circuit board, each two adjacent LED units are spaced a preset distance apart from each other and emit light of different colors. Six virtual mixed light sources are formed by reflection of the prism sheet to the circuit board when the light emitted by an LED unit mixes with light emitted from adjacent LED units on the circuit board. Each of the virtual mixed light sources has a color different from the colors of the light emitted from the LED units.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: September 3, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Shao-Han Chang, Qing-Shan Cao, Su-Tzong Liu
  • Patent number: 8454206
    Abstract: A surface light source device includes a lamp post, a number of light sources distributed in rows on the side surfaces of the lamp post, and a number of first prism sheets and second prism sheets arranged around the lamp post in that order. Each of the first prism sheets and the second prism sheets includes a light incident surface and a light exit surface opposite to the light incident surface. Each of the light exit surfaces includes a number of substantially parallel elongated protrusions, and the longitudinal directions of the elongated protrusions of the first prism sheet and the second prism sheet are substantially perpendicular to each other. The first prism sheets and the lamp post are approximately spaced by a first predefined distance, and the second prism sheets and the first prism sheets are approximately spaced by a second predefined distance.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: June 4, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8454191
    Abstract: An LED lighting device includes a lampshade, a plurality of LED light sources and a light guiding member. The light guiding member is arranged inside the lampshade, and includes a plurality of plates each having a connecting end, wherein the connecting ends of the plurality of plates are connected together. Each plate includes two surfaces, one or two of which includes a plurality of accentuated portions, and one of the plates defines a light incident surface opposing the LED light sources. After entering the light guiding member from the light incident surface, the light from the LED light sources is reflected between opposite surfaces of each plate of the light guiding member. Light reaching the accentuated portions is diffused and exits the light guiding member, to be finally transmitted outside through the lampshade.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: June 4, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8444300
    Abstract: An LED lamp includes a circuit board with a plurality of LEDs switch and a lamp base made of heat dispersing material. The lamp base includes a fastening pedestal. The fastening pedestal includes an accommodating member, a shell, and a plurality of heat diffusion walls. The accommodating member defines a cavity configured for receiving the circuit board. The shell encloses the accommodating member. The plurality of heat diffusion walls connect the accommodating member to the shell. Each of two adjacent heat diffusion walls define an outlet.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: May 21, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8408750
    Abstract: An LED illuminating device includes a hollow base including a first end and a second end, an LED substrate, a connector, and a driving circuit module accommodated in the base. A plurality of vents are defined in a circumferential wall of the hollow base; a space is formed between a circumferential wall of the driving circuit module and the inner surface of the circumferential wall of the hollow base. The space can communicate with the plurality of vents and serve as a hot air channel, to promote heat exchange between hot air in the base and cool air outside the base.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: April 2, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Shao-Han Chang, Fu-Qiu Shi, Qing-Shan Cao
  • Patent number: 8405289
    Abstract: An LED illuminating device includes a hollow housing including an open end and a closed end opposite to the open end, an LED substrate, a connector, a base held inside the housing; and a driving circuit accommodated in the base. A number of first vents are arranged on the lateral surface of the housing adjacent to the closing end, a number of second air vents are arranged on the lateral surface of the housing adjacent to the open end, and a space is formed between the surface of the base and the inner wall of the housing and communicated with the first vents and the second vents.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 26, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8376579
    Abstract: An LED lamp includes a base, an encapsulation, a substrate and a light distribution board. A number of light emitting diodes are mounted on the substrate. The encapsulation, the substrate and the light distribution board are all fixed to the base. Opposite sides of the light distribution board respectively face the encapsulation and the substrate. The light distribution board includes a number of protrusions. The protrusions totally reflect the incident light beams from the light emitting diodes perpendicular to or substantially perpendicular to the light distribution board.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: February 19, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8256932
    Abstract: An exemplary light diffusion plate includes a main body, and a plurality of diffusion particles dispersed in the main body. The main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface is a flat surface. The second surface defines a plurality of rectangular structures. Each rectangular structure defines four adjacent triangular pyramid depressions. A backlight module using the light diffusion plate is also provided.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: September 4, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8246199
    Abstract: An LED illuminating device includes a first and a second illuminating module, and a connecting module connecting the first illuminating module with the second illuminating module. The first illuminating module includes a first substrate carrying a double-sided reflector, a first group of LEDs, and a second group of LEDs. The double-sided reflector divides the first illuminating module into a front lighting area and a lateral lighting area, light emitted by the first group of LEDs illuminates the front lighting area, and light emitted by the second group of LEDs illuminates the lateral lighting area. The second illuminating module includes a second substrate and a third group of LEDs mounted on the second substrate. The first group of LEDs and the second group of LEDs are opposite to the third group of LEDs, and the projections of the first substrate and the second substrate are spaced to each other.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: August 21, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Shao-Han Chang, Wen-Hsiang Lu