Patents by Inventor Terence Chen

Terence 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: 7661337
    Abstract: A fixing structure of direction switch buttons for a reversible wrench, in which the wrench is equipped with two direction switch buttons on a driving portion of the wrench. The wrench includes button-restricting portions and location-restricting portions relative to the driving portion. The two direction switch buttons can be inserted and arranged inside the driving portion. Moreover, a button-fixing device is provided between the two direction switch buttons, the button-fixing device includes an actuating member and a restoring member. The two ends of the actuating member are wedged into the two direction switch buttons respectively so that the two direction switch buttons are driven simultaneously. The actuating member is able to move elastically between the two direction switch buttons by the restoring member so as to connect the two direction switch buttons elastically.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: February 16, 2010
    Assignee: Infar Industrial Co., Ltd.
    Inventor: Terence Chen
  • Patent number: 7648029
    Abstract: A simplified rotatable anti-theft tool rack comprises a tool rack body and an inserting body that cooperate with each other to position a tool. The tool rack body includes a limiting portion used to receive an inserting portion of the head of the tool and connected with a guiding portion. At the end of the guiding portion is disposed with a fastening portion for restricting the tool by cooperating with a fixing element. The inserting body includes a multangular engaging portion. One end of the engaging portion is disposed with a stopping flange, and the other end of the engaging portion is extended to form a neck-shaped inserting portion. At the end of the inserting portion which has inserted through the limiting portion is formed a big-diameter check portion, thus forming a simplified structure, achieving the anti-theft and rotatable effect.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: January 19, 2010
    Inventor: Terence Chen
  • Publication number: 20080302743
    Abstract: A simplified rotatable anti-theft tool rack comprises a tool rack body and an inserting body that cooperate with each other to position a tool. The tool rack body includes a limiting portion used to receive an inserting portion of the head of the tool and connected with a guiding portion. At the end of the guiding portion is disposed with a fastening portion for restricting the tool by cooperating with a fixing element. The inserting body includes a multangular engaging portion. One end of the engaging portion is disposed with a stopping flange, and the other end of the engaging portion is extended to form a neck-shaped inserting portion. At the end of the inserting portion which has inserted through the limiting portion is formed a big-diameter check portion, thus forming a simplified structure, achieving the anti-theft and rotatable effect.
    Type: Application
    Filed: June 7, 2007
    Publication date: December 11, 2008
    Inventor: Terence Chen
  • Publication number: 20080163730
    Abstract: An adapter engaging structure has an elastic pressing member on the surface of an adapter contacting with a driving head of a wrenching tool, the elastic pressing member is positioned inside the holding portion of the pressing member. With the engaging portion of the pressing member projecting slightly above the surface of the adapter, when the adapter is inserted into a driving portion of a tool, the projective engaging portion is engaged with the inner wall of the driving portion by means of an elastic engaging strength. In addition, when the pressing member is inserted into the holding portion, via the elastic pressing strength of the fixing portion of the pressing member to position the pressing member and the magnetic piece therein inside the holding portion, and without damaging the magnetic piece. Then the objectives of high stability and the engagement of the pressing member are attained.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Inventor: Terence Chen
  • Patent number: 7278338
    Abstract: A ratchet wrench includes a head having an engaging portion for mounting an object and a through hole which includes an engaging inner periphery and a smooth inner periphery, and is closed by a bottom plate with a central hole. A movable member is movably received in the second through hole and includes a driving section and a connection section. An operation portion includes a handle and a mounting portion which has a connection recess so as to be engaged with the connection section of the movable member. The driving section of the movable member is removably engaged with the engaging inner periphery. By moving the movable member relative to the mounting portion, the handle can be selectively rotated freely or co-rotated with the head.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: October 9, 2007
    Inventor: Terence Chen
  • Publication number: 20070169568
    Abstract: A wrench includes a handle and a head connected to an end of the handle. A driving member is received in a through hole in the head and a pawl is received in a first recess defined in an inner periphery of the through hole. The teeth of the pawl are engaged with the teeth of the driving member. At least one detection member is connected to the head so as to detect changes of voltage, resistance, deformation, current, phase differences, or displacement of the wrench. A display member is connected to an outside of the head and electrically connected with the at least one detection member. The user can check the digital value of the torque applied to the object. The method for detecting torque of a wrench includes steps of re-setting, operation, detection, deformation, transmitting digital signals, and displaying.
    Type: Application
    Filed: July 7, 2006
    Publication date: July 26, 2007
    Inventor: Terence Chen
  • Patent number: 7207244
    Abstract: A selective one-way wrench includes a head defining a first space and a second space communicated with the first space. A gear is put pivotally in the first space. The gear includes a toothed external face. A direction controller is put in the second space. The direction controller includes two toothed faces. A spring pushes the direction controller to the gear. A direction switch includes a first element put pivotally on the head and a second element put in the second space and connected to the first element for bringing selected one of the toothed faces of the direction controller into engagement with the toothed external face of the gear.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: April 24, 2007
    Inventor: Terence Chen
  • Publication number: 20070044600
    Abstract: A wrench includes a handle and two function heads on two ends of the handle. Two engaging holes are respectively defined in the two function heads so as to be engaged with two driving members. Each of the two driving members includes an engaging section for being engaged with the engaging hole and a polygonal driving portion which extends from the engaging section. The sizes of the two engaging sections can be 10 mm (? inch) and 13 mm (½ inch), 10 mm (? inch) and 19 mm (¾ inch), or 13 mm (½ inch) and 19 mm (¾ inch).
    Type: Application
    Filed: August 29, 2005
    Publication date: March 1, 2007
    Inventor: Terence Chen
  • Publication number: 20070034058
    Abstract: A ratchet wrench includes a head having a first through hole with a polygonal inner periphery to be engaged with an object and a second through hole which includes a first engaging inner periphery. A rod portion is movably received in the second through hole and has a flange which is removably engaged with the first engaging inner periphery. The cap member has a polygonal recess so as to be engaged with a first end of the rod portion so that the rod portion is co-rotated with the cap member. The cap member has an annular lip which has a second engaging outer periphery. An operation portion includes a connection recess to retain the cap member therein. By operating the rod portion or the cap member, the handle can be selectively rotated freely or co-rotated with the head.
    Type: Application
    Filed: October 24, 2006
    Publication date: February 15, 2007
    Inventor: Terence Chen
  • Patent number: 7171876
    Abstract: A wrench combination includes a handle with an ear defining an aperture and an annular groove around the aperture. A wrench includes an annular head, an ear extending from the annular head and an annular gear put in the annular head. A washer is put in the annular groove defined in the ear of the handle. A washer is put in the annular groove defined in the ear of the wrench. Each washer includes an aperture, first and second pairs of contact locations at opposite positions of the aperture on a first side. Each washer also includes a central contact location intermediate each pair of contact locations and two lateral contact locations on an opposite second side. The central contact locations are located intermediate the two lateral contact locations. A joint includes a first pair of ears for sandwiching the ear of the handle and a second pair of ears for sandwiching the ear of the wrench.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: February 6, 2007
    Inventor: Terence Chen
  • Publication number: 20070022847
    Abstract: A positioning device for hand tools includes a driving member engaged with a hole in a wrench head and a groove is defined in an outer periphery of the driving member so as to receive a C-shaped clip therein. The clip includes an engaging section which is matched with a straight positioning part defined in an inner periphery of the groove so that the clip does not rotate relative to the driving member. The clip further has at least one curve biasing portion which extends out from the groove and is engaged with an inner periphery of the groove to position the driving member in the hole of the wrench head.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 1, 2007
    Inventor: Terence Chen
  • Patent number: 7146883
    Abstract: A wrench includes a wrench body, an actuating member, a pawl member, a direction control knob, a positioning device, and a driving member. Thus, the direction control knob is mounted on the drive head of the wrench body after assembly of the pawl member and the driving member, so that the direction control knob is mounted on the drive head of the wrench body easily, rapidly and conveniently, thereby facilitating assembly of the wrench and thereby decreasing costs of production.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: December 12, 2006
    Inventor: Terence Chen
  • Patent number: 7080579
    Abstract: A ratchet wrench includes a handle and an annular head formed on the handle. The annular head defines a first space, a second space in communication with the first space and a third space in communication with the second space. An annular gear is positioned rotationally in the first space. In the second space is a direction controller including two pawls and a spring between the pawls. Partially in the third space is a direction switch for engaging selective one of the pawls with the annular gear. The direction switch defines a recess. On the annular head is a spring-biased rod detent for automatic insertion into the recess after the direction switch is moved partially in the third space, thus locking the direction switch to the annular head while allowing the rotation of the direction switch on the annular head.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: July 25, 2006
    Inventor: Terence Chen
  • Publication number: 20060156868
    Abstract: A wrench includes a wrench body, an actuating member, a pawl member, a direction control knob, a positioning device, and a driving member. Thus, the direction control knob is mounted on the drive head of the wrench body after assembly of the pawl member and the driving member, so that the direction control knob is mounted on the drive head of the wrench body easily, rapidly and conveniently, thereby facilitating assembly of the wrench and thereby decreasing costs of production.
    Type: Application
    Filed: August 19, 2005
    Publication date: July 20, 2006
    Inventor: Terence Chen
  • Publication number: 20060137491
    Abstract: A ratchet wrench includes a head having an engaging portion for mounting an object and a through hole which includes an engaging inner periphery and a smooth inner periphery, and is closed by a bottom plate with a central hole. A movable member is movably received in the second through hole and includes a driving section and a connection section. An operation portion includes a handle and a mounting portion which has a connection recess so as to be engaged with the connection section of the movable member. The driving section of the movable member is removably engaged with the engaging inner periphery. By moving the movable member relative to the mounting portion, the handle can be selectively rotated freely or co-rotated with the head.
    Type: Application
    Filed: August 19, 2005
    Publication date: June 29, 2006
    Inventor: Terence Chen
  • Publication number: 20060118500
    Abstract: A tool-holding apparatus is provided for holding at least one tool. The tool-holding apparatus includes a board and at least two holders formed on the board. Each of the holders includes a stand extending from the board, a first pressing element extending from the stand and a second pressing element for cooperating with the first pressing element of the other holder in order to pinch the tool.
    Type: Application
    Filed: January 13, 2005
    Publication date: June 8, 2006
    Inventor: Terence Chen
  • Publication number: 20060117913
    Abstract: A selective one-way wrench includes a handle and a head from which the handle projects. The head defines a first space, a second space in communication with the first space, a third space in communication with the second space and an aperture. An annular gear is rotationally positioned in the first space. A direction controller is positioned in the second space. The direction controller includes two pawls and a spring installed between the pawls. The direction switch is partially positioned in the third space for engaging selected one of the pawls with the annular gear. The direction switch defines a recess. A fastener is driven into the recess of the direction switch through the aperture of the head so as to pivotally install the direction switch on the head.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 8, 2006
    Inventor: Terence Chen
  • Patent number: 7055689
    Abstract: A hanger holds at least one wrench including a head and a handle. The hanger includes a first shell and a second shell for releasable engagement with the first shell. The first shell includes a board with a thickened portion and at least one recess defined in the thickened portion for receiving the handle of the at least one wrench. The first shell can be disengaged from the second shell for mounting of the at least one wrench mounted onto the first shell. The first shell can be engaged with the second shell for firmly holding the at least one wrench on the hanger.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: June 6, 2006
    Inventor: Terence Chen
  • Patent number: D524613
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: July 11, 2006
    Inventor: Terence Chen
  • Patent number: D577991
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: October 7, 2008
    Assignee: Infar Industrial Co., Ltd.
    Inventor: Terence Chen