Patents by Inventor Yi-feng Liu

Yi-feng Liu 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: 20120152068
    Abstract: A hand tool set includes two housings each having a chamber formed by a pair of side walls and a base wall, and each having an orifice formed in the base wall, and each having an anchoring member and a pivot axle, two or more tool members pivotally attached to one of the housings, and two or more tool elements pivotally attached to the other housing, and the tool elements are extendible out through an orifice of the other housing when the tool elements are perpendicular to the housing, and the tool members are extendible out through the orifice of the other housing when the tool members are perpendicular to the housing, the tool members and the tool elements are selectively useable by the users.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Inventor: Yi Feng Liu
  • Publication number: 20110074262
    Abstract: A tool box includes a cabinet which has a rear board. The cabinet is partitioned inside to form multiple housing compartments to hold multiple drawers. The rear board has an attraction element located thereon. Each drawer has a trough and a lid. The trough has a holding space and a front plate with a drawing means located thereon. The lid is closed on the trough and has anchor holes latchable by the drawing means and a magnetic element at the rear end corresponding to the attraction element. The drawing means can be turned to latch in the anchor holes to make the drawer to be served as a portable tool kit. When the drawer is held in the cabinet, the trunk can be drawn without turning the drawing means to keep the lid in the cabinet, and the drawer can hold tools and spare parts like an ordinary tool box.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Inventor: Yi-Feng LIU
  • Publication number: 20110060931
    Abstract: A method and system to enable power measurements of a system-on-chip in various modes. In one embodiment of the invention, the system-on-chip has full controllability of its logic and circuitry to facilitate configuration of the system-on-chip into a desired mode of operation. This allows hooks or interfaces to access the system-on-chip externally for measurements. For example, in one embodiment of the invention, the hooks in the system-on-chip allow a backend tester to configure the system-on-chip into various modes easily to perform power consumption measurements of one or more individual components of the system-on-chip. The power consumption measurement of the individual components in the system-on-chip can be performed faster and can be more accurate. In addition, the overall yield of the SOC can be increased as it is easier to detect failure parts.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 10, 2011
    Inventors: SIVAKUMAR RADHAKRISHNAN, Sin S. Tan, Stephan J. Jourdan, Lily P. Lool, Yi-Feng Liu
  • Patent number: 7810413
    Abstract: A hexagon spanner handle of the present invention includes a handle whose three edges are inwardly concaved respectively so as to form three shaft-like bodies at three triangle points. The handle has plural hexagonal apertures in different sizes arranged along the three shaft-like bodies. One plane surface of the handle has three position-limiting slots which are respectively located in three shaft-like bodies and outwardly extended along the shaft-like body and are communicating with the hexagonal apertures. The bottom of each position-limiting slot has plural indentations in different widths, and a magnetic body is located at the end of the position-limiting slot. Thereby, each hexagonal aperture can be inserted by the short leg of corresponding hexagon spanner, and the position-limiting slot can receive the long leg of the hexagon spanner with the magnetic body attracts thereof for fixing, so that the handle can be assembled with hexagon spanners in different standards.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: October 12, 2010
    Inventor: Yi-Feng Liu
  • Publication number: 20100058898
    Abstract: A hexagon spanner handle of the present invention includes a handle whose three edges are inwardly concaved respectively so as to form three shaft-like bodies at three triangle points. The handle has plural hexagonal apertures in different sizes arranged along the three shaft-like bodies. One plane surface of the handle has three position-limiting slots which are respectively located in three shaft-like bodies and outwardly extended along the shaft-like body and are communicating with the hexagonal apertures. The bottom of each position-limiting slot has plural indentations in different widths, and a magnetic body is located at the end of the position-limiting slot. Thereby, each hexagonal aperture can be inserted by the short leg of corresponding hexagon spanner, and the position-limiting slot can receive the long leg of the hexagon spanner with the magnetic body attracts thereof for fixing, so that the handle can be assembled with hexagon spanners in different standards.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 11, 2010
    Inventor: Yi-Feng Liu
  • Patent number: 7441654
    Abstract: An open reel screwdriver tips holder includes a lower cap and a corresponding upper cap. The lower cap has a shaft to couple with a spiral spring coupled with a rotary barrel on the outer side by fastening to a tail end of it. The rotary barrel has an outer wall fastening to a winding band which has a plurality of sleeves located on a surface to hold screwdriver tips and has a drawing head exposed outside an opening of the holder peripheral wall. The rotary barrel has a plurality of latch portions on an inner wall corresponding to a latch tray which has ratchet teeth on the top surface to engage with latch teeth on the bottom of the upper cap which has a pushbutton on the top to push the latch tray downwards so that the winding band can be retracted into the holder.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: October 28, 2008
    Inventor: Yi-Feng Liu
  • Patent number: 7441481
    Abstract: A socket wrench having multiple driving heads includes a triangular star-shape handle which consists of an upper and a lower shell. The triangular portions of the handle have respectively a protrusive driving portion. Two neighboring driving portions are connected by a side wall formed in an arched shape concaved inwards. Each driving portion holds a driving bar having a coupling head on an outer side and a ratchet on an inner side inside. A clamping box is provided that includes an upper and a lower deck in the interior center of the handle and has three pairs of detent plates in the middle to control turning direction of the ratchet. A rotary knob is provided having an actuation bar beneath to move the detent plates. Thus a plurality of driving bars which hold the coupling heads of different shapes and sizes can be held in the handle. The socket wrench thus formed can be grasped easily and change of driving direction can be accomplished rapidly.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: October 28, 2008
    Inventor: Yi-Feng Liu
  • Patent number: 7387055
    Abstract: An accommodating handle for hexagon spanner includes a box which is approximately a triangle and is assembled by an upper box and a lower box, wherein the three points of the triangle inside the lower box are respectively disposed a pillar, the three edges of the box are concaved inwardly to be arcs, a turning piece is mounted at the edge and one end of the turning piece is a pivoting end for pivoting on the box and the other end is a moving end having wedging points for wedging at the locations adjacent to the three points of the box, plural hexagon spanners in various sizes are sleeved on the pillar of the lower box in size sequence, and the three points of the box are respectively mounted an indentation for penetrating the working end of the hexagon spanners.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: June 17, 2008
    Inventor: Yi-Feng Liu
  • Publication number: 20080115631
    Abstract: A socket wrench having multiple driving heads includes a triangular star-shape handle which consists of an upper and a lower shell. The triangular portions of the handle have respectively a protrusive driving portion. Two neighboring driving portions are connected by a side wall formed in an arched shape concaved inwards. Each driving portion holds a driving bar having a coupling head on an outer side and a ratchet on an inner side inside. A clamping box is provided that includes an upper and a lower deck in the interior center of the handle and has three pairs of detent plates in the middle to control turning direction of the ratchet. A rotary knob is provided having an actuation bar beneath to move the detent plates. Thus a plurality of driving bars which hold the coupling heads of different shapes and sizes can be held in the handle. The socket wrench thus formed can be grasped easily and change of driving direction can be accomplished rapidly.
    Type: Application
    Filed: November 21, 2006
    Publication date: May 22, 2008
    Inventor: Yi-Feng Liu
  • Publication number: 20080110302
    Abstract: An accommodating handle for hexagon spanner includes a box which is approximately a triangle and is assembled by an upper box and a lower box, wherein the three points of the triangle inside the lower box are respectively disposed a pillar, the three edges of the box are concaved inwardly to be arcs, a turning piece is mounted at the edge and one end of the turning piece is a pivoting end for pivoting on the box and the other end is a moving end having wedging points for wedging at the locations adjacent to the three points of the box, plural hexagon spanners in various sizes are sleeved on the pillar of the lower box in size sequence, and the three points of the box are respectively mounted an indentation for penetrating the working end of the hexagon spanners.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 15, 2008
    Inventor: Yi-Feng Liu
  • Publication number: 20080093240
    Abstract: An open reel screwdriver tips holder includes a lower cap and a corresponding upper cap. The lower cap has a shaft to couple with a spiral spring coupled with a rotary barrel on the outer side by fastening to a tail end of it. The rotary barrel has an outer wall fastening to a winding band which has a plurality of sleeves located on a surface to hold screwdriver tips and has a drawing head exposed outside an opening of the holder peripheral wall. The rotary barrel has a plurality of latch portions on an inner wall corresponding to a latch tray which has ratchet teeth on the top surface to engage with latch teeth on the bottom of the upper cap which has a pushbutton on the top to push the latch tray downwards so that the winding band can be retracted into the holder.
    Type: Application
    Filed: September 7, 2006
    Publication date: April 24, 2008
    Inventor: Yi-Feng Liu
  • Patent number: 7317238
    Abstract: A plurality of N-doped strip portions are formed alternating with a plurality of P-doped regions. When a voltage is applied to the N-doped strip portions, a capacitance is created between the N-doped strip portions and the P-doped strip portions. A capacitance is also created between the N-doped strip portions and the underlying epitaxial silicon layer. A larger interface area between N-doped and P-doped regions generally increases the capacitance. By providing the N-doped strip portions, as opposed to a continuous N-doped region, the combined interface area between the N-doped strip portions and the underlying epitaxial silicon layer is reduced. However, more interface area is provided between the N-doped strip portions and the P-doped strip portions. A circuit simulation indicates that junction capacitance per unit peripheral length is 0.41 fF/?m, while the junction capacitance per unit area is 0.19 fF/?m^2.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: January 8, 2008
    Assignee: Intel Corporation
    Inventors: Jung S. Kang, Peter P. Jeng, Michael M. DeSmith, Md Monzur Hossain, Yi-feng Liu
  • Publication number: 20060189059
    Abstract: A plurality of N-doped strip portions are formed alternating with a plurality of P-doped regions. When a voltage is applied to the N-doped strip portions, a capacitance is created between the N-doped strip portions and the P-doped strip portions. A capacitance is also created between the N-doped strip portions and the underlying epitaxial silicon layer. A larger interface area between N-doped and P-doped regions generally increases the capacitance. By providing the N-doped strip portions, as opposed to a continuous N-doped region, the combined interface area between the N-doped strip portions and the underlying epitaxial silicon layer is reduced. However, more interface area is provided between the N-doped strip portions and the P-doped strip portions. A circuit simulation indicates that junction capacitance per unit peripheral length is 0.41 fF/?m, while the junction capacitance per unit area is 0.19 fF/?mˆ2.
    Type: Application
    Filed: February 23, 2005
    Publication date: August 24, 2006
    Inventors: Jung Kang, Peter Jeng, Michael DeSmith, Md Hossain, Yi-feng Liu
  • Patent number: D570178
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: June 3, 2008
    Inventor: Yi-Feng Liu