Patents by Inventor Bobby Hu

Bobby Hu 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).

  • Fastener-driving tool assembly
    Publication number: 20040083861
    Abstract: A fastener-driving tool assembly includes a fastener-driving member and a coupling device. The fastener-driving member includes a first end and a second end for driving a fastener. The first end of the fastener-driving member includes a polygonal opening. The coupling device includes a first member and a second member. The second member has a polygonal end securely engaged with the polygonal opening of the fastener-driving member. The first member includes an end for engaging with the other end of the second member. The other end of the first member includes a polygonal engaging hole for engaging with one of an extension rod, a handle, and a polygonal first end of a second member of a similarly constructed coupling device.
    Type: Application
    Filed: October 23, 2003
    Publication date: May 6, 2004
    Inventor: Bobby Hu
  • Tool try-on device
    Publication number: 20040074796
    Abstract: A tool try-on device includes a body and a frictional retaining member mounted to the body. The frictional retaining member and the body together define a compartment for receiving a rotatable member rotatably mounted to an end of a handle of a tool. The frictional retaining member exerts a frictional force to an outer surface of the rotatable member of the tool for retaining the rotatable member in place unless a rotational force greater than the frictional force is applied to the handle of the tool in a ratcheting direction.
    Type: Application
    Filed: August 25, 2003
    Publication date: April 22, 2004
    Inventor: Bobby Hu
  • Easy-to-operate and easy-to-assemble ratcheting-type wrench
    Patent number: 6722234
    Abstract: A wrench comprises a handle and a head extended from the handle. A web is defined between the handle and the head. The head includes a compartment in which a drive member is rotatably received. The web includes a transverse through-hole having an intermediate portion communicated with the compartment. A cavity is defined in the web and communicated with the transverse through-hole. A switch member is mounted in the cavity and rotatable relative to the handle between two positions corresponding to two opposite ratcheting directions of the handle. A pawl is slidably mounted in the transverse through-hole for engaging with the drive member. The pawl remains in the transverse through-hole during operation. A pin and a coil spring are provided to retain the pawl in place.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: April 20, 2004
    Inventor: Bobby Hu
  • Dual Function retainer for a ratcheting wrench
    Publication number: 20040065175
    Abstract: A ratcheting wrench includes a handle, a head extending from an end of the handle and having a hole communicated with a compartment in the end of the handle, a drive member rotatably mounted in the hole of the head, and a ratcheting mechanism. The drive member includes an inner periphery for securely holding a fastener-driving member, allowing joint rotation when the drive member is turned. A retainer is mounted around the end of the drive member and has two resilient portions extending into the hole of the drive member via the slots for rotatably holding the drive member in the hole of the head and for securely, releasably holding the fastener-driving member in the hole of the drive member.
    Type: Application
    Filed: August 25, 2003
    Publication date: April 8, 2004
    Inventor: Bobby Hu
  • Reversible ratcheting tool with a smaller head and improved driving torque
    Publication number: 20040055423
    Abstract: A ratcheting tool includes a handle and a head with a compartment. A drive member includes a first end extended beyond the compartment, a second end extended beyond the compartment, and a gear wheel formed between the first end and the second end. The gear wheel is rotatably mounted in the compartment and includes a toothed outer periphery. A pawl is mounted in the compartment and includes a toothed side facing the gear wheel teeth. The toothed side of the pawl includes a first teeth portion having a first center of curvature and a second teeth portion having a second center of curvature located at a position different from the first center of curvature.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 25, 2004
    Inventor: Bobby Hu
  • Wrench with a fixed maximum operational torque
    Patent number: 6701813
    Abstract: A wrench comprises a rod, a retainer, a pressing member, and a casing for accommodating the retainer and allowing relative pivotal movement between the casing and the retainer. The pressing member is received in the casing and slidable along a longitudinal direction of the rod. The pressing member is biased to press against two ends of the retainer, thereby exerting an engaging force between each of two ends of the retainer and an associated one of the ends of the pressing member. When a rotational force applied to the casing is smaller than the engaging force, the retainer and the rod are turned to thereby turn the fastener. When a rotational force applied to the casing is greater than the engaging force, the casing and the pressing member slide while the retainer and the rod are not turned.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: March 9, 2004
    Inventor: Bobby Hu
  • Retainer ring for securely retaining a first object to a second object
    Patent number: 6698320
    Abstract: A resilient retainer ring comprises at least two pressing sections and at least one engaging section. Each pressing section presses against a bottom wall defining an annular groove in a receiving compartment of a screwdriver shank when the retainer ring is mounted in the annular groove of the screwdriver shank. The engaging section is exposed to at least one corner of the receiving compartment such that the engaging section has at least a portion engaged in a retaining groove of a bit when an end of the bit is received in the receiving compartment of the screwdriver shank.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: March 2, 2004
    Inventor: Bobby Hu
  • Retainer ring for securely retaining a first object to a second object
    Patent number: 6691593
    Abstract: A retainer ring includes at least two holding sections and at least one engaging section. Each holding section has a radius of curvature equal to half of a diameter of a reduced section of a first object, e.g., an adaptor. The engaging section has a radius of curvature greater than that of the holding sections. The holding sections securely clamp the reduced section of the first object with the engaging section partially protruding out of the reduced section of the first object for engaging with a second object e.g., a box end of a wrench.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: February 17, 2004
    Inventor: Bobby Hu
  • Wrench having a hollow handle
    Publication number: 20040020330
    Abstract: A wrench includes a hollow handle and a head. The hollow handle has a first, necked end and a second end. The first, necked end has a diameter smaller than that of the second end of the hollow handle. The second end of the hollow handle has an integral end wall for at least partially closing the second end of the hollow handle. The head and the necked end of the hollow handle are fused together.
    Type: Application
    Filed: July 21, 2003
    Publication date: February 5, 2004
    Inventor: Bobby Hu
  • Reversible ratcheting tool with a smaller head and improved driving torque
    Publication number: 20040016322
    Abstract: A ratcheting tool includes a handle and a head with a compartment. A drive member includes a first end extended beyond the compartment, a second end extended beyond the compartment, and a gear wheel formed between the first end and the second end. The gear wheel is rotatably mounted in the compartment and includes a toothed outer periphery. A pawl is mounted in the compartment and includes a toothed side facing the gear wheel teeth. The toothed side of the pawl includes a first teeth portion having a first center of curvature and a second teeth portion having a second center of curvature located at a position different from the first center of curvature.
    Type: Application
    Filed: July 17, 2003
    Publication date: January 29, 2004
    Inventor: Bobby Hu
  • Tool rack having two stories of rack members
    Publication number: 20030234196
    Abstract: A tool rack includes a first rack member and a second rack member. The first rack member includes at least one tool-holding portion on a side thereof. The tool-holding portion of the first rack member releasably holds a tool. The second rack member includes an end pivotally engaged with an end of the first rack member. The second rack member includes at least one tool-holding portion on a side thereof. The tool-holding portion of the second rack member releasably holds a tool. The second rack member can be pivoted to a position allowing easy storage/retrieval of the tools in/from the first rack member.
    Type: Application
    Filed: May 13, 2003
    Publication date: December 25, 2003
    Inventor: Bobby Hu
  • Hook screw driver with a tool-coupling arrangement
    Publication number: 20030233913
    Abstract: A hook screw driver includes a first body and a second body. An end of the first body is connected to an end of the second body. The other end of the first body and the other end of the second body are movable between an open position and a closed position for together clamping a hook screw. The hook screw driver includes a tool-coupling portion for coupling with an end of a tool for tightening/loosening fasteners.
    Type: Application
    Filed: January 21, 2003
    Publication date: December 25, 2003
    Inventor: Bobby Hu
  • Switching arrangement for a reversible ratchet type wrench
    Patent number: 6666112
    Abstract: A wrench includes a handle and a head extended from the handle. The handle includes a transverse receptacle communicated with a hole in the head and a cavity that communicates with the transverse receptacle. Two pawls are mounted in the transverse receptacle and each include a first side for releasably engaging with a drive member in the hole of the head and a second side abutting against an inner longitudinal wall of the transverse receptacle. A switch member is rotatably mounted in the cavity of the handle and includes an actuating portion for selectively moving one of the pawls to a position not engaging with the drive member. The switch member further includes two support portions for selectively supporting a portion of the other pawl that disengages from the inner longitudinal wall of the transverse receptacle, thereby supporting the other pawl that engages with the drive member.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: December 23, 2003
    Inventor: Bobby Hu
  • Wrench with a fixed maximum operational torque
    Patent number: 6666117
    Abstract: A wrench comprises a rod comprising a driving portion for engaging with a fastener, a retainer having an end securely engaged with the rod to move therewith, and a casing comprising a compartment for accommodating the retainer. The casing comprises a retaining section defining a retaining space for retaining the other end of the retainer in place. When a rotational force applied to the casing is smaller than an engaging force between the retaining section of the casing and a retaining device that is attached between the retaining section and the retainer, the retainer and the rod are turned to thereby turn the fastener. When a rotational force applied to the casing is greater than the engaging force, the casing slides while the retainer and the rod are not turned.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: December 23, 2003
    Inventor: Bobby Hu
  • Wrench with a fixed maximum operational torque
    Patent number: 6662693
    Abstract: A wrench includes a rod, a slide control member, a casing for rotatably accommodating the slide control member, and a retaining device. The rod comprises a driving portion on an end thereof for engaging with a fastener. The slide control member is securely mounted to the rod to turn therewith. The retaining device is mounted in the casing and includes an end operably connected to the slide control member. When a rotational force applied to the casing is smaller than an engaging force between the slide control member and the end of the retaining device, the slide control member and the rod are turned to thereby turn the fastener. When a rotational force applied to the casing is greater than the engaging force between the slide control member and the end of the retaining device, the casing slides while the slide control member and the rod are not turned.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: December 16, 2003
    Inventor: Bobby Hu
  • Wrench with a fixed maximum operational torque
    Publication number: 20030221524
    Abstract: A wrench includes a drive member for driving a fastener, a retainer securely engaged with the drive member to move therewith, and a casing having a compartment for accommodating the retainer. The casing includes a retaining section defining a retaining space for retaining the retainer in place. When a rotational force applied to the casing is smaller than an engaging force between the retaining section of the casing and a retaining device that is attached between the retaining section and the retainer, the retainer and the rod are turned to thereby turn the fastener. When a rotational force applied to the casing is greater than the engaging force, the casing slides while the retainer and the rod are not turned. The drive member is releasably engaged with the retainer, allowing the wrench to be used with various types of drive members for driving various types of fasteners.
    Type: Application
    Filed: May 22, 2003
    Publication date: December 4, 2003
    Inventor: Bobby Hu
  • Wrench having two rigid supporting areas for a pawl
    Patent number: 6647832
    Abstract: A wrench invention includes a handle having a cavity defined by a wall. A head extends from the handle and includes a compartment that is communicated with the cavity. A drive member is rotatably received in the compartment of the head and includes a plurality of teeth on an outer periphery thereof. A pawl is received in the cavity of the handle and engaged with the teeth of the drive member. The pawl is supported by two fixed rigid supporting areas when in an operative position for ratcheting operation.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: November 18, 2003
    Inventor: Bobby Hu
  • Method for processing a hand tool
    Patent number: 6647834
    Abstract: A method is provided for processing a handle tool. Raw material formed into the hand tool is firstly hardened by heat treatment. A surface of the hand tool is polished after hardening. A layer of metal is deposited on the surface of the polished hand tool to provide an anti-rust effect and/or anti-corrosion effect. A local area of the layer of metal deposition on the surface of the hand tool that is grasped during use is sanded to provide an anti-slide section. A numerical size area of the hand tool is covered by a local sanding mask before local sanding to thereby form a clear numerical size mark in the local area after local sanding.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: November 18, 2003
    Inventor: Bobby Hu
  • Adaptor device for a wrench
    Patent number: 6647831
    Abstract: An adaptor device includes an adaptor and a retainer. The adaptor includes a first end removably mounted in a box end of a wrench and a second end releasably engaged with an object such as a tool bit. The retainer is fixed to the first end of the adaptor and includes at least two resilient retaining sections on an outer periphery thereof. A slit is defined between two resilient retaining sections that are adjacent to each other. The resilient retaining sections abut against an edge of the box end of the wrench, thereby providing an engaging force between the resilient retaining sections and the edge of the box end that is greater than an engaging force between the adaptor and the tool bit. Thus, the tool bit can be disengaged from the adaptor without causing disengagement of the adaptor from the box end of the wrench.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: November 18, 2003
    Inventor: Bobby Hu
  • Reversible ratchet-type wrench
    Patent number: 6644148
    Abstract: A wrench comprises a handle and a head extending from the handle. A peripheral wall defining a hole in the head includes a compartment. An annular groove is defined in an end of the peripheral wall defining the hole. The annular groove is partially coincident with the compartment. A pawl is slidably received in the compartment and biased to engage with a gear wheel in the hole. A switching member is partially mounted in the hole for moving the pawl when switching of the ratcheting direction is required. A retainer ring is partially engaged in an annular groove in the switching member and partially engaged in the annular groove of the head. The retainer ring is retained in place by a wall defining the compartment. The switching member is not moved when the pawl moves as a result of free rotation of the wrench.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: November 11, 2003
    Inventor: Bobby Hu