Patents by Inventor Jun Fan Chen

Jun Fan Chen 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: 8925165
    Abstract: The present invention provides an oil seal removing tool including a pivotable hooking element and a location portion. The location portion has a slidable structure and an elastic element pressing against the slidable structure. The slidable structure is able to be engaged to the hooking element, and the elastic element pushes the slidable structure toward the hooking element. Moving the slidable structure can fix or release the engagement between the slidable structure and the hooking element. Thus, adjusting the working angle can be much easier and more efficient.
    Type: Grant
    Filed: October 23, 2011
    Date of Patent: January 6, 2015
    Inventor: Jun Fan Chen
  • Patent number: 8662100
    Abstract: The present invention provides a tube clamping and closing device which includes a main body having a first end and a second end, and a retaining assembly having several kinds of work portions and disposed at the second end of the main body. The first end has a first clamping member extending laterally and having a threaded hole extending vertically. A blocking member is threadedly connected to the threaded hole and adapted for closing an opening of a tube. The work portions alternatively define a clamping space with the first clamping member and the main body. Whereby a single device of the present invention can be used for different kinds of tubes or multiport valves. The present invention has advantages of operating conveniently, carrying and putting away easily, saving space and costs, etc.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: March 4, 2014
    Inventor: Jun Fan Chen
  • Patent number: 8640572
    Abstract: A wrench includes a transmitting device and a shell. The transmitting device comprises a rotor, a first working member, a second working member, a first linking member and a second linking member. The first linking member is disposed between the first working member and the rotor. The shell has a containing room for the linking device to be disposed therein. The shell comprises a middle section. The first end of the middle section extends upwardly to connect with the first section. The second end of the middle section extends downwardly to connect with the second section. Thus, the wrench has two stair portions of different horizontal level. And Users can hold the wrench more stably. Because the wrench uses the rotor and two linking members to drive the first working member and the second working member rotating, a total size of the wrench can be kept as smaller as possible.
    Type: Grant
    Filed: August 7, 2011
    Date of Patent: February 4, 2014
    Inventor: Jun Fan Chen
  • Publication number: 20140000421
    Abstract: A gear grasping device of the present invention includes a main body, a first jaw, a second jaw, and an adjustment means. The main body is provided with a curved portion accompanied with an opening The first jaw and the second jaw are disposed on the main body. The opening is arranged between the first jaw and the second jaw. By the adjustment means, position of the first jaw is changeable for adjusting a jaw span between the first jaw and the second jaw. Therefore, the gear grasping device is fit for sizes of gears, and is operation-friendly.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 2, 2014
    Inventor: Jun Fan CHEN
  • Publication number: 20130313450
    Abstract: The present invention provides a tube clamping and closing device which includes a main body having a first end and a second end, and a retaining assembly having several kinds of work portions and disposed at the second end of the main body. The first end has a first clamping member extending laterally and having a threaded hole extending vertically. A blocking member is threadedly connected to the threaded hole and adapted for closing an opening of a tube. The work portions alternatively define a clamping space with the first clamping member and the main body. Whereby a single device of the present invention can be used for different kinds of tubes or multiport valves. The present invention has advantages of operating conveniently, carrying and putting away easily, saving space and costs, etc.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 28, 2013
    Inventor: Jun Fan CHEN
  • Publication number: 20130212844
    Abstract: An adjustable clamping device is provided. The device includes a first and a second clamping body, an adjusting mechanism and an elastic member. The first clamping body includes a first jaw formed with a first locking member and a first connecting portion formed with first limiting portion. The second clamping body includes a second jaw formed with second blocking member and a second connecting portion formed with at least two second limiting portions. A jaw opening is formed between the first and second jaws. The adjusting mechanism includes a shaft which is rotatably positioned at the first limiting portion and selectively positioned at one of the second limiting portions.
    Type: Application
    Filed: August 19, 2012
    Publication date: August 22, 2013
    Inventor: Jun Fan CHEN
  • Patent number: 8511133
    Abstract: An expander includes a first head member, a rotating portion, a plurality of expanding members, and a tightening structure. The first head member and the rotating portion have conical faces corresponding to each other. The rotating portion has a threaded rod section which is screwed with the first head member. The expanding members are arranged around the two conical faces, and the expanding members tend to approach each other due to the tightening structure. When the rotating portion is rotated to approach the first head member, the expanding members are pushed outward to radially expand a tubular element. In addition, a plurality of restriction slots are formed on the conical face of the first head member, and each expanding member forms a corresponding rib slidably disposed in the restriction slot to improve stability.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: August 20, 2013
    Inventor: Jun Fan Chen
  • Patent number: 8505177
    Abstract: A removal and replacement tool for vehicles contains a first body including a chamber, a second hole, and a third hole; a grip set including a second body and a push piece, the push piece including an arcuate notch; at least one first returning spring, one end of which is fixed in the chamber, and another end of which abuts against two sides of the second body; a shaft member disposed in the chamber, and its one end extending out of the first body from the first hole; a second spring, one end of which abuts against the chamber, another end of which is biased against the shaft member; an engaging member including a first side wall and a second side wall; a rotary knob including a rotating portion and a rod portion connecting with the rotating portion.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 13, 2013
    Inventor: Jun Fan Chen
  • Patent number: 8495932
    Abstract: A tool for removing lug nuts contains a supporting post including an actuating portion and two guiding portions extending outward from two sides of the actuating portion respectively; a screw rod including a head end and a circular extension extending outward from the head end, wherein an outer diameter of the head end is more than that of the circular extension, the circular extension includes a first and a second thread sections; two retaining arm, each including a hole to insert the guiding portion, an aperture arranged on a top end thereof to communicate with the hole, and an orifice secured thereon below the hexagonal hole and having a third and a fourth thread sections to screw with the first and the second thread sections respectively so that after the screw rod is rotated, the retaining arms are driven to close to each other or leave away from each other.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: July 30, 2013
    Inventor: Jun Fan Chen
  • Publication number: 20130097830
    Abstract: The present invention provides an oil seal removing tool including a pivotable hooking element and a location portion. The location portion has a slidable structure and an elastic element pressing against the slidable structure. The slidable structure is able to be engaged to the hooking element, and the elastic element pushes the slidable structure toward the hooking element. Moving the slidable structure can fix or release the engagement between the slidable structure and the hooking element. Thus, adjusting the working angle can be much easier and more efficient.
    Type: Application
    Filed: October 23, 2011
    Publication date: April 25, 2013
    Inventor: Jun Fan CHEN
  • Publication number: 20130032007
    Abstract: A wrench includes a transmitting device and a shell. The transmitting device comprises a rotor, a first working member, a second working member, a first linking member and a second linking member. The first linking member is disposed between the first working member and the rotor. The shell has a containing room for the linking device to be disposed therein. The shell comprises a middle section. The first end of the middle section extends upwardly to connect with the first section. The second end of the middle section extends downwardly to connect with the second section. Thus, the wrench has two stair portions of different horizontal level. And Users can hold the wrench more stably. Because the wrench uses the rotor and two linking members to drive the first working member and the second working member rotating, a total size of the wrench can be kept as smaller as possible.
    Type: Application
    Filed: August 7, 2011
    Publication date: February 7, 2013
    Inventor: Jun Fan CHEN
  • Patent number: 8347765
    Abstract: An axial connecting structure of pliers contains two symmetrical bodies axially connected together by using a first screw bolt and a nut; each body including a first extension with a grip and a second extension axially connected with a clamping paw, wherein the second extension includes a hollow fitting member, the fitting member includes a central hole, a limiting shaft, a positioning orifice to receive a spring and a ball, and a circular disc; the clamping paw includes an annular tab having a central post, the post includes an axial aperture, the tab also includes a receiving chamber to fit the fitting member and an inner fringe, the receiving chamber includes a guiding groove based on a radian of a predetermined degree of first central angle, the inner fringe includes plural recesses arranged thereon based on a radian of a second central angle.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: January 8, 2013
    Inventor: Jun Fan Chen
  • Publication number: 20120291597
    Abstract: A tool for removing lug nuts contains a supporting post including an actuating portion and two guiding portions extending outward from two sides of the actuating portion respectively; a screw rod including a head end and a circular extension extending outward from the head end, wherein an outer diameter of the head end is more than that of the circular extension, the circular extension includes a first and a second thread sections; two retaining arm, each including a hole to insert the guiding portion, an aperture arranged on a top end thereof to communicate with the hole, and an orifice secured thereon below the hexagonal hole and having a third and a fourth thread sections to screw with the first and the second thread sections respectively so that after the screw rod is rotated, the retaining arms are driven to close to each other or leave away from each other.
    Type: Application
    Filed: May 19, 2011
    Publication date: November 22, 2012
    Inventor: JUN FAN CHEN
  • Publication number: 20120180607
    Abstract: An axial connecting structure of pliers contains two symmetrical bodies axially connected together by using a first screw bolt and a nut; each body including a first extension with a grip and a second extension axially connected with a clamping paw, wherein the second extension includes a hollow fitting member, the fitting member includes a central hole, a limiting shaft, a positioning orifice to receive a spring and a ball, and a circular disc; the clamping paw includes an annular tab having a central post, the post includes an axial aperture, the tab also includes a receiving chamber to fit the fitting member and an inner fringe, the receiving chamber includes a guiding groove based on a radian of a predetermined degree of first central angle, the inner fringe includes plural recesses arranged thereon based on a radian of a second central angle.
    Type: Application
    Filed: January 19, 2011
    Publication date: July 19, 2012
    Inventor: JUN FAN CHEN
  • Publication number: 20120151729
    Abstract: A removal and replacement tool for vehicles contains a first body including a chamber, a second hole, and a third hole; a grip set including a second body and a push piece, the push piece including an arcuate notch; at least one first returning spring, one end of which is fixed in the chamber, and another end of which abuts against two sides of the second body; a shaft member disposed in the chamber, and its one end extending out of the first body from the first hole; a second spring, one end of which abuts against the chamber, another end of which is biased against the shaft member; an engaging member including a first side wall and a second side wall; a rotary knob including a rotating portion and a rod portion connecting with the rotating portion.
    Type: Application
    Filed: December 20, 2010
    Publication date: June 21, 2012
    Inventor: JUN FAN CHEN
  • Publication number: 20110219846
    Abstract: A pair of bidirectional pipe bending pliers comprises: a first handle and a second handle. The first handle includes a first handle portion and a first pipe-bending portion, and the second handle includes a second handle portion and a second pipe-bending portion. When the first and second pipe-bending portions are closed toward each other to carry out clamping operation, the first and third bending grooves will define a first pipe-bending path therebetween, while the second and fourth bending grooves will also define a second pipe-bending path, the first and second pipe-bending paths extend in different axial directions.
    Type: Application
    Filed: March 13, 2010
    Publication date: September 15, 2011
    Inventor: Jun Fan Chen
  • Publication number: 20110147683
    Abstract: A puller with an adjustable hook head comprises a hook head including an axial rotating extension rotably disposed on one end thereof, and including a plurality of toothed engaging recesses continuously arranged around an arcuate outer periphery thereof; a plate assembly including a first plate part and a second plate part, the first and the second plate parts including two connection ends disposed on one sides thereof respectively and being folded together to form a closed cavity, and the cavity including an aperture secured therein; a controlling member received in the cavity and including a driving block fixed on a top end thereof, including a retaining projection disposed on one side thereof in response to the engaging recesses of the hook head.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Inventor: JUN FAN CHEN