Patents by Inventor Mou-Tang Liou

Mou-Tang Liou 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: 20100140575
    Abstract: A prying tool includes a shank having an engaging portion and two prongs moveably mounted on the engaging portion of the shank and the prongs define a space therebetween such that an item to be pried is received in the space. The prongs are operably moveable so that the space is variable in size. Further, two positioning devices are utilized for holding the two prongs stationary with respect to the engaging portion of the shank respectively.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 10, 2010
    Inventor: Mou-Tang LIOU
  • Publication number: 20090307848
    Abstract: A multi-function tool comprises a shank body including a plurality of located grooves aligned thereon longitudinally; a pry bar including a first section, a second section extending from the first section for prying, a first receptacle longitudinally piercing the first section for slidably mounted on the shank body and two second receptacles transversely piercing the first section and in communication with the first receptacle; two clutches respectively disposed in the second receptacles for alternatively engaging with a selective one of the located grooves; and a foot hold disposed onto the bottom of the first receptacle; wherein the second end of the shank body is inserted through the first receptacle of the pry bar and installed to the foot hold, with the foot hold being able to rotate relative to the shank body.
    Type: Application
    Filed: June 16, 2008
    Publication date: December 17, 2009
    Inventor: Mou-Tang Liou
  • Publication number: 20090307847
    Abstract: A multi-function tool has a shank body including a first end, a second end and a plurality of positioning grooves formed between the first and second ends thereof. A pry bar includes a connected section and a working section extending from a side of the connected section for pulling nails. A through-hole pierces the connected section for slidably receiving the shank body, with a second receptacle piercing the connected section and in communication with the through-hole. A clutch is disposed in the second receptacle for alternatively engaging with a selected one of the positioning grooves.
    Type: Application
    Filed: June 16, 2008
    Publication date: December 17, 2009
    Inventor: Mou-Tang Liou
  • Patent number: 7587791
    Abstract: A tool includes a handle, a controller and a bit. The handle includes a socket defining an axial non-circular space and a radial space in communication with the axial space. The controller includes a space defined therein and a ridge formed on the wall of the space thereof. The controller is movable in the radial space of socket between a locking position and a releasing position. The bit includes a working tip and a shank defining at least one recess for receiving the ridge when the shank is inserted into the space of the controller through the axial space of the socket, thus locking the bit to the handle.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: September 15, 2009
    Inventor: Mou-Tang Liou
  • Patent number: 7311018
    Abstract: A wrench includes a handle, a joint movably mounted on the handle and a working unit pivotally connected to the joint. The handle pivots relative to the working unit between a first position, where the handle and the working unit extend perpendicular to each other, and a second position, where the handle and the working unit extend along a same axis.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: December 25, 2007
    Inventor: Mou-Tang Liou
  • Publication number: 20070163084
    Abstract: A tool includes a handle, a controller and a bit. The handle includes a socket defining an axial non-circular space and a radial space in communication with the axial space. The controller includes a space defined therein and a ridge formed on the wall of the space thereof. The controller is movable in the radial space of socket between a locking position and a releasing position. The bit includes a working tip and a shank defining at least one recess for receiving the ridge when the shank is inserted into the space of the controller through the axial space of the socket, thus locking the bit to the handle.
    Type: Application
    Filed: January 18, 2006
    Publication date: July 19, 2007
    Inventor: Mou-Tang Liou
  • Patent number: 7059220
    Abstract: A wrench combination includes a first wrench, a second wrench and a joint for rotationally connecting the first wrench with the second wrench. The first wrench is movably connected with the joint. A socket can be attached to each end of the first wrench. The second wrench is movably connected with the joint. A socket can be attached to each end of the second wrench.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: June 13, 2006
    Inventor: Mou-Tang Liou
  • Publication number: 20060112793
    Abstract: A wrench combination includes a first wrench, a second wrench and a joint for rotationally connecting the first wrench with the second wrench. The first wrench is movably connected with the joint. A socket can be attached to each end of the first wrench. The second wrench is movably connected with the joint. A socket can be attached to each end of the second wrench.
    Type: Application
    Filed: November 29, 2004
    Publication date: June 1, 2006
    Inventor: Mou-Tang Liou
  • Patent number: 7036404
    Abstract: A handle is provided for use with a bit or extensive rod. The handle includes a socket. The socket includes a thin section, a thick section, an annular face between the thin and thick sections, an axial cavity and a radial aperture communicated with the axial cavity in the thin section. A detent is put in the radial aperture. A chuck is put on the socket for control over the detent.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: May 2, 2006
    Inventor: Mou-Tang Liou
  • Patent number: 6941842
    Abstract: A wrench combination includes a first wrench and a second wrench. The first wrench includes a shaft and two sockets each formed at an end of the shaft. The second wrench is rotationally connected with the first wrench. The second wrench includes a shaft and two sockets each formed at an end of the shaft.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: September 13, 2005
    Inventor: Mou-Tang Liou
  • Patent number: 6862765
    Abstract: A tool includes a tool bit, a handle and a locking device. The tool bit includes a working head formed at an end, an insert formed at an opposite end and at least one annular groove defined in the insert. The handle includes a grip formed at an end, a socket defining a cavity for receiving the insert of the tool bit and a joint via which the socket is connected with an opposite end of the handle. The locking device can lock the insert of the tool bit in a releasable manner. The locking device includes a tunnel defined in the joint so that an axis of the tunnel is parallel to that of the cavity. A latch defines at least one notch. The latch is movable in the tunnel between a locking position and a releasing position. The locking device includes at least one truncated conical hole through which the cavity is communicated with the tunnel. The at least one truncated conical hole includes a first end at the cavity and a second end at the tunnel.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: March 8, 2005
    Inventor: Mou-Tang Liou
  • Publication number: 20040173061
    Abstract: A handle is provided for use with a bit or extensive rod. The handle includes a socket. The socket includes a thin section, a thick section, an annular face between the thin and thick sections, an axial cavity and a radial aperture communicated with the axial cavity in the thin section. A detent is put in the radial aperture. A chuck is put on the socket for control over the detent.
    Type: Application
    Filed: March 22, 2004
    Publication date: September 9, 2004
    Inventor: Mou-Tang Liou
  • Patent number: 6725749
    Abstract: A tool includes a tool bit and a handle for releasable engagement with the tool bit. The tool bit includes an insert formed thereon. The handle includes a socket formed thereon. The socket includes a cavity defined therein for receiving the insert and at least one hole communicated with the cavity. The at least one hole includes an internal end and an external end larger than the internal end. The at least one annular groove defined in the insert is aligned with the at least one hole when the insert is inserted in the socket. At least one ball is received in the at least one hole. A sleeve includes an internal face and at least one cam surface formed on the internal face thereof. The sleeve is rotationally mounted on the socket between a first position and a second position. In the first position, the at least one cam surface allows complete removal of the at least one ball from the cavity. In the second position, the at least one cam surface pushes the at least one ball into the cavity.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: April 27, 2004
    Inventor: Mou-Tang Liou
  • Publication number: 20040074349
    Abstract: A tool includes a tool bit and a handle for releasable engagement with the tool bit. The tool bit includes an insert formed thereon. The handle includes a socket formed thereon. The socket includes a cavity defined therein for receiving the insert and at least one hole communicated with the cavity. The at least one hole includes an internal end and an external end larger than the internal end. The at least one annular groove defined in the insert is aligned with the at least one hole when the insert is inserted in the socket. At least one ball is received in the at least one hole. A sleeve includes an internal face and at least one cam surface formed on the internal face thereof. The sleeve is rotationally mounted on the socket between a first position and a second position. In the first position, the at least one cam surface allows complete removal of the at least one ball from the cavity. In the second position, the at least one cam surface pushes the at least one ball into the cavity.
    Type: Application
    Filed: October 16, 2002
    Publication date: April 22, 2004
    Inventor: Mou-Tang Liou
  • Publication number: 20040045416
    Abstract: A tool includes a handle, a bit and a locking device. The handle includes a socket defining a first tunnel, a second tunnel and at least one aperture through which the first tunnel is communicated with the second tunnel. The bit includes a working head formed at an end, a shank formed at an opposite end and a series of recesses defined in the shank. The shank can be inserted in the first tunnel. The locking device includes at least one ball detent and a latch. The at least one ball detent is put in the aperture. The latch extends in the second tunnel for pushing the ball detent into one of the recesses in a locking position and defining at least one notch for receiving the ball detent in a releasing position.
    Type: Application
    Filed: August 29, 2003
    Publication date: March 11, 2004
    Inventor: Mou-Tang Liou
  • Patent number: 6647837
    Abstract: A hand tool includes a handle, a plunger, an elastic element, a driver, a device for transforming a blow into a torque and a clutch. The handle is hollow. The plunger includes a first end and a second end. The plunger is inserted in the handle so that it cannot rotate relative to the handle and that the second end extends beyond the handle. The elastic element is received in the handle. The driver includes a first section for engagement with a tool bit and a second section received in the handle so that it can rotate relative to the handle. The transforming device is arranged between the plunger and the driver for transforming a blow on the second end of the plunger into a torque on the second section of the driver. The clutch is mounted on the first section of the driver so that it cannot rotate relative to the driver and can move between a first position where it cannot rotate relative to the handle and a second position where it can rotate relative to the handle.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: November 18, 2003
    Inventor: Mou-Tang Liou
  • Patent number: 6644702
    Abstract: A tool includes a tool bit and a handle. The tool bit includes a shank formed at an end thereof. The handle includes a joint formed at an end thereof for connection with the shank of the tool bit in a releasable manner. The joint defines a space for receiving the shank of the tool bit. The shank of the tool bit defines at least one recess. The joint includes at least one ball that can partially enter the at least one recess defined in the shank of the tool bit.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: November 11, 2003
    Inventor: Mou-Tang Liou
  • Patent number: 6612586
    Abstract: A tool holder and tool combination comprises a tool holder and a tool. The tool holder comprises a compartment defined in an end thereof. The tool has an end releasably engaged in the compartment of the tool holder.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: September 2, 2003
    Inventor: Mou-Tang Liou
  • Publication number: 20030110909
    Abstract: A hand tool including a handle, a plunger, an elastic element, a driver, a device for transforming a blow into a torque and a clutch. The handle is hollow. The plunger includes a first end and a second end. The plunger is inserted in the handle so that it cannot rotate relative to the handle and that the second end extends beyond the handle. The elastic element is received in the handle. The driver includes a first section for engagement with a tool bit and a second section received in the handle so that it can rotate relative to the handle. The transforming device is arranged between the plunger and the driver for transforming a blow on the second end of the plunger into a torque on the second section of the driver. The clutch is mounted on the first section of the driver so that it cannot rotate relative to the driver and can move between a first position where it cannot rotate relative to the handle and a second position where it can rotate relative to the handle.
    Type: Application
    Filed: April 8, 2002
    Publication date: June 19, 2003
    Inventor: Mou-Tang Liou
  • Patent number: D503604
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: April 5, 2005
    Inventor: Mou-Tang Liou