Patents by Inventor Te Chen Chu

Te Chen Chu 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: 9914201
    Abstract: A ratchet tool device includes a shaft having two compartments formed by curved surfaces, two pawls pivotally attached to the shafts and each having a toothed segment and a swelling, a barrel having an opening for engaging with the shaft and having an internal gear for engaging with the toothed segments of the pawls and for determining the rotational direction of the barrel by the shaft, a spring biasing member is engaged between the pawls for biasing the toothed segments of the pawls to engage with the internal gear of the barrel, a control ferrule is engaged with the shaft and the barrel and includes two actuators for engaging with the swellings and for disengaging the toothed segments of the pawls from the internal gear of the barrel.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 13, 2018
    Inventor: Te Chen Chu
  • Publication number: 20170001299
    Abstract: A tool box includes a housing having a chamber formed by two side walls, a bracing member having two arms each pivotally engaged with the side wall, a tool supporting member having a pivot axle engaged with the side walls for mounting the tool supporting member to the housing, and two followers attached to the arms and each having an eccentric member coupled to the tool supporting member for pivoting the tool supporting member relative to the housing with the bracing member when the bracing member is pivoted relative to the housing and for suitably supporting the tool member on the tool supporting member when the housing is tilted relative to the supporting ground or table.
    Type: Application
    Filed: May 28, 2015
    Publication date: January 5, 2017
    Inventor: Te Chen CHU
  • Publication number: 20160346907
    Abstract: A ratchet tool device includes a shaft having two compartments formed by curved surfaces, two pawls pivotally attached to the shafts and each having a toothed segment and a swelling, a barrel having an opening for engaging with the shaft and having an internal gear for engaging with the toothed segments of the pawls and for determining the rotational direction of the barrel by the shaft, a spring biasing member is engaged between the pawls for biasing the toothed segments of the pawls to engage with the internal gear of the barrel, a control ferrule is engaged with the shaft and the barrel and includes two actuators for engaging with the swellings and for disengaging the toothed segments of the pawls from the internal gear of the barrel.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 1, 2016
    Inventor: Te Chen CHU
  • Patent number: 9421674
    Abstract: A ratchet driving tool includes a handle having a lateral aperture, a housing pivotally attached to the handle and having a hole aligned with the aperture of the handle, and two depressions formed in the housing and communicating with the hole of the housing, a ratchet driving mechanism is attached to the housing, a latch is slidably engaged in the through hole of the housing and the aperture of the handle, the latch includes a key slidably engageable with either of the depressions of the housing for anchoring the housing to the handle at a selected angular position and for allowing the ratchet driving tool to be easily actuated or operated by the user.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: August 23, 2016
    Inventor: Te Chen Chu
  • Publication number: 20150283682
    Abstract: A ratchet driving tool includes a handle having a lateral aperture, a housing pivotally attached to the handle and having a hole aligned with the aperture of the handle, and two depressions formed in the housing and communicating with the hole of the housing, a ratchet driving mechanism is attached to the housing, a latch is slidably engaged in the through hole of the housing and the aperture of the handle, the latch includes a key slidably engageable with either of the depressions of the housing for anchoring the housing to the handle at a selected angular position and for allowing the ratchet driving tool to be easily actuated or operated by the user.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 8, 2015
    Inventor: Te Chen CHU
  • Patent number: 9126314
    Abstract: A ratchet driving tool includes a driving shank secured to a base supporting element and having two non-circular engaging segments, a casing engaged onto the driving shank and the engaging segments and having a groove and a slot for engaging with engaging elements, two gears engaged onto the casing and around the engaging elements for allowing the engaging elements to be engaged between the gears and the engaging segments and for determining a driving direction of the driving shank by the casing and the gears, a housing is attached to the base supporting element, and a control ferrule is engaged with the one of the gears for rotating the gears and the driving shank with the engaging elements.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: September 8, 2015
    Inventor: Te Chen Chu
  • Publication number: 20120240731
    Abstract: A tool extension includes a receiving member having a stem and a casing, the stem includes an engaging hole for engaging with a driving tool, and the casing includes an space formed between two plates for engaging with an adapter, the adapter includes a number of radially extended protrusions for rotating and directing toward and away from the stem, the adapter and includes a socket opening formed in each of the protrusions for engaging with various tool elements or fasteners. The casing includes a spring biased projection engaged in one of the plates for selectively engaging with the adapter and for positioning the adapter to the casing.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 27, 2012
    Inventor: Te Chen Chu
  • Patent number: 7181996
    Abstract: A ratchet wrench includes a handle having an internal gear formed in a head, two annular members rotatably received in the head and each having an internal gear, a stem rotatably engaged in the handle and having a pinion for engaging with and for rotating the annular members relative to the head. A shank is rotatably engaged in the head and includes four spring biased pawls each having one or more teeth for engaging with and for controlling the driving direction of the shank by the head or the annular members and the stem. The shank includes a through engaging hole having two open ends for selectively engaging with driven members by disposing the shank up aide down relative to the driven members.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: February 27, 2007
    Inventor: Te Chen Chu
  • Patent number: 7104165
    Abstract: A swing head structure of a wrench with two kinds of torque output includes a head part and a handle pivotally coupled together by a shaft, the wrench can also be used as a ratchet wrench or can rotate the handle backwards and forwards to make the head part to rotate in one direction, the rotating direction can be changed, the swinging movement of the head part does not affect the rotation and transmission of the wrench and the handle, the swinging head part includes two kinds of torque output to the wrench.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: September 12, 2006
    Inventor: Te-Chen Chu
  • Publication number: 20050155468
    Abstract: A swing head structure of a wrench with two kinds of torque output mainly comprises a head part and a handle, by a shaft pivot to adjust swing angles and positioning of the head part, the wrench can also be used as a ratchet wrench or can rotate the handle backwards and forwards to make the head part to rotate in one direction speedily, the rotating direction can be changed, the swinging movement of the head part does not affect the rotation and transmission of the wrench and the handle, the swinging head part having two kinds of torque output to the wrench.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 21, 2005
    Inventor: Te-Chen Chu
  • Patent number: 6854360
    Abstract: A method for manufacturing a socket tool includes: forging a socket blank to form a plurality of arcuate locking grooves; hydraulic working to form a plurality of helical arcuate locking grooves in the socket blank; turning and cutting the periphery of the socket blank to make the periphery of the socket blank smooth; performing a heat treatment on the socket blank; and forming a socket tool having a plurality of helical arcuate locking grooves which are extended and contracted from an outer end to an inner end of the socket tool to form a contracted conical hole. Thus, the socket tool can be used to forcibly rotate and detach a hexagonal screw member having worn or rust corners.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: February 15, 2005
    Inventor: Te Chen Chu
  • Publication number: 20040250657
    Abstract: A method for manufacturing a socket tool includes: forging a socket blank to form a plurality of arcuate locking grooves; hydraulic working to form a plurality of helical arcuate locking grooves in the socket blank; turning and cutting the periphery of the socket blank to make the periphery of the socket blank smooth; performing a heat treatment on the socket blank; and forming a socket tool having a plurality of helical arcuate locking grooves which are extended and contracted from an outer end to an inner end of the socket tool to form a contracted conical hole. Thus, the socket tool can be used to forcibly rotate and detach a hexagonal screw member having worn or rust corners.
    Type: Application
    Filed: June 10, 2003
    Publication date: December 16, 2004
    Inventor: Te Chen Chu
  • Patent number: 6311584
    Abstract: A ratchet wrench includes a handle having an internal gear formed in a head. One or more ring gears are rotatably received in the head and engaged with a bevel gear which is received in the handle for rotating the ring gears. A seat is rotatably received in the head and has a driving stem and includes two rotatable pawls each having two end teeth for selectively engaging with the internal gear and for selectively driving the driving stem. One or more rods are engaged between the ring gears and the seat to drive the seat and the driving stem with the ring gears.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: November 6, 2001
    Inventor: Te Chen Chu
  • Patent number: D714607
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: October 7, 2014
    Inventor: Te Chen Chu