Patents by Inventor Fang-Fu Chang

Fang-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).

  • Patent number: 10483827
    Abstract: An improved built-in capacitor motor structure includes a housing, a stator portion, an insulating member and a rotor portion. The housing includes a front cover and a rear cover for receiving the stator portion. The stator portion includes a core frame provided with an annular insulating frame body to which the insulating member connects. A plurality of circularly arranged docking units extend from the periphery of one side of the insulating frame body. A plurality of corresponding docking units are provided at the bottom side edge of the insulating member. These corresponding docking units are engaged with the docking units of the insulating frame body, respectively. The rotor portion is received in the stator portion. A capacitor is combined inside an accommodating space of the insulating member in communication with the outside, such that the capacitor is assembled inside the motor. In this way, assembly is easy while electromagnetic field of the motor is less easily affected.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: November 19, 2019
    Assignee: Sagitta Industrial Corp.
    Inventor: Fang-Fu Chang
  • Publication number: 20170288508
    Abstract: An improved built-in capacitor motor structure includes a housing, a stator portion, an insulating member and a rotor portion. The housing includes a front cover and a rear cover for receiving the stator portion. The stator portion includes a core frame provided with an annular insulating frame body to which the insulating member connects. A plurality of circularly arranged docking units extend from the periphery of one side of the insulating frame body. A plurality of corresponding docking units are provided at the bottom side edge of the insulating member. These corresponding docking units are engaged with the docking units of the insulating frame body, respectively. The rotor portion is received in the stator portion. A capacitor is combined inside an accommodating space of the insulating member in communication with the outside, such that the capacitor is assembled inside the motor. In this way, assembly is easy while electromagnetic field of the motor is less easily affected.
    Type: Application
    Filed: October 17, 2016
    Publication date: October 5, 2017
    Inventor: Fang-Fu Chang
  • Patent number: 8510930
    Abstract: A manufacturing method of shield type motor includes the following steps: a): providing an iron core; b): providing a plastic shell and having the exterior face of the plastic shell press against the interior face of the iron core; c): providing a plurality of connected enamel-covered coils for being wound around the bobbin; d): providing a wire fastener for bundling the first material of plastics and the second material of plastics; e): providing a protecting jacket to be connected to the plastic shell and for containing the plurality of enamel-covered coils; f): providing a mold to let the iron core place in the mold and having the first material of plastics teem into the mold; g): having the second material of plastics teem into the mold; and h): removing the mold to expose a main body.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: August 20, 2013
    Inventor: Fang-Fu Chang
  • Publication number: 20130205580
    Abstract: A manufacturing method of shield type motor includes the following steps: a): providing an iron core; b): providing a plastic shell and having the exterior face of the plastic shell press against the interior face of the iron core; c): providing a plurality of connected enamel-covered coils for being wound around the bobbin; d): providing a wire fastener for bundling the first material of plastics and the second material of plastics; e): providing a protecting jacket to be connected to the plastic shell and for containing the plurality of enamel-covered coils; f): providing a mold to let the iron core place in the mold and having the first material of plastics teem into the mold; g): having the second material of plastics teem into the mold; and h): removing the mold to expose a main body.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 15, 2013
    Inventor: Fang-Fu Chang
  • Publication number: 20130207506
    Abstract: An insulated structure of shield type motor coil includes an iron core having a multiplicity of bobbins, at least a plastic shell having a multiplicity of insulators and is pressed against the iron core, a multiplicity of enamel-covered coils and each of the insulators is one-to-one correspondent to and pressed against the bobbin, a multiplicity of enamel-covered coils each of them is correspondent to and wound around the bobbin and the multiplicity of enamel-covered coils has a first connecting lead and a second connecting lead extended there from, a wire fastener secured in the plastic shell for holding the first connecting lead and the second connecting lead, a protecting jacket connected to the plastic shell and having a containing space for containing the multiplicity of enamel-covered coils, as well as a supporting frame for coating the protecting jacket and having a multiplicity of supporting posts thereof.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 15, 2013
    Inventor: Fang-Fu CHANG
  • Publication number: 20130169105
    Abstract: A stator structure of motor includes at least an outer ring part having a plurality of containing slots, a plurality of salient ribs having a length “d”, a plurality of first slot legs having a first width “W1” and forming a first slot opening on both sides of the salient ribs with the slot wall, and a plurality of second slot legs having a second width “W2” and forming a second slot opening on both sides of the salient ribs with the slot wall. By making use of the two slot legs, the windings with appropriate number of wire-winding cycle form alternately disposed structure of unsymmetrical-width type to achieve the objective of fully utilizing the area of the slot opening making the winding is capable of generating rotational magnetic field with relatively better roundness, improving the efficiency of the electrical machine, and saving the material for the stator.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Inventor: Fang-Fu CHANG
  • Patent number: 6861780
    Abstract: The invention relates to a motor's stator for a household fan whose silicon steel sheets have an enlarged middle hole for increasing from 16 slots to 24 slots along the circumference of the middle hole. Accordingly, the number of poles is increased from four to six so as to form a six-pole motor that upgrades the revolutions and torsion. In addition, the enlargement of the middle hole can correspondingly diminish the whole area of the slots so that the number of turns in the slots can be lowered. Meanwhile, the material cost is reducible, the temperature rise is suppressible and the efficiency is enhancable.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: March 1, 2005
    Inventor: Fang-Fu Chang
  • Patent number: 6791231
    Abstract: The invention relates to a two-pole motor's stator for a household fan having slots with tapered close end and greater width by enlarging the stator's middle hole (for accommodating a rotor with greater diameter) under the precondition without influence on the stator's yoke height and the capacity (or area) of each slot. Therefore, the output torsion of the rotor is enhanced and the stator's yoke height is increased while the iron loss and the temperature rise are reducible for upgrading the rotation efficiency. Meanwhile, the high slot-occupied ratio to affect the assembling efficiency is also avoidable.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: September 14, 2004
    Inventor: Fang-Fu Chang
  • Publication number: 20040130232
    Abstract: The invention relates to a two-pole motor's stator for a household fan having slots with tapered close end and greater width by enlarging the stator's middle hole (for accommodating a rotor with greater diameter) under the precondition without influence on the stator's yoke height and the capacity (or area) of each slot. Therefore, the output torsion of the rotor is enhanced and the stator's yoke height is increased while the iron loss and the temperature rise are reducible for upgrading the rotation efficiency. Meanwhile, the high slot-occupied ratio to affect the assembling efficiency is also avoidable.
    Type: Application
    Filed: April 22, 2003
    Publication date: July 8, 2004
    Inventor: Fang-Fu Chang
  • Publication number: 20040027026
    Abstract: The invention relates to a motor's stator for a household fan whose silicon steel sheets have an enlarged middle hole for increasing from 16 slots to 24 slots along the circumference of the middle hole. Accordingly, the number of poles is increased from four to six so as to form a six-pole motor that upgrades the revolutions and torsion. In addition, the enlargement of the middle hole can correspondingly diminish the whole area of the slots so that the number of turns in the slots can be lowered. Meanwhile, the material cost is reducible, the temperature rise is suppressible and the efficiency is enhancable.
    Type: Application
    Filed: April 22, 2003
    Publication date: February 12, 2004
    Inventor: Fang-Fu Chang
  • Patent number: D806650
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: January 2, 2018
    Inventor: Fang-Fu Chang