Patents by Inventor Chih-Ching Hsien

Chih-Ching Hsien 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).

  • Ratchet socket tool
    Publication number: 20050120835
    Abstract: A socket tool includes a handle and a socket is movably mounted to one of two ends of the handle. A groove and a plurality of notches are defined in the outer periphery of the end of the handle. The socket has two passages defined through a wall of the socket and an angel is defined between each one of the passages and a radius of the socket. A positioning pin extends through the wall of the socket and is engaged with the groove of the handle. The two passages are located at two different longitudinal positions from an end of the socket. A bead and a spring are respectively received in each of the passages, and one of the two beads is engaged with one of the notches by moving the socket on the end of the handle. Each of the two beads engaged with the notch decides the direction that the socket drives an object accommodated in the socket.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 9, 2005
    Inventor: Chih-Ching Hsien
  • HAND TOOL HAVING BENDABLE HOLDING PORTION
    Publication number: 20050120837
    Abstract: A hand tool includes a head portion having two jaw portions, a handle portion pivotally mounted on the head portion and having two holding grips, a mounting tube mounted on a first one of the two holding grips, a push rod mounted on a second one of the two holding grips and slidably mounted in the mounting tube, and an elastic member mounted in the mounting tube and urged between the mounting tube and the push rod. Thus, the two holding grips of the handle portion have the same bent angle, thereby facilitating the user adjusting the included angle between the head portion and the handle portion.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 9, 2005
    Inventor: Chih-Ching Hsien
  • Wrench open end having a pushing tongue
    Patent number: 6899000
    Abstract: A wrench includes an open end which includes two jaws and a connection portion connected between the two jaws. A clamping portion is defined in an inside of each jaw and located close to a first side of each jaw. A loose portion is defined in the inside of each jaw and located close to a second side of each jaw. A width between the two respective loose portions of the two jaws is wider than a width between the two respective clamping portions of the two jaws. A pushing tongue is located between the two jaws. A nut can be clamped by the clamping portions of the two jaws by compressing the pushing tongue, and is freely rotatable relative to the open end when located in a space enclosed by the loose portions.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: May 31, 2005
    Inventor: Chih-Ching Hsien
  • Engaging recess for sockets
    Publication number: 20050109166
    Abstract: A socket includes a tubular body having a receiving recess in a first end thereof so as to be connected with a driving end of a wrench, and an engaging recess is defined in a second end of the tubular body so as to be mounted to a bolt head or a nut. The engaging recess has 24 or 36 points equal-angularly extending from an inner periphery of the engaging recess. An opening between two adjacent points is smaller than a width between two respective root portions of the two adjacent points.
    Type: Application
    Filed: November 24, 2003
    Publication date: May 26, 2005
    Inventor: Chih-Ching Hsien
  • WRENCH OPEN END HAVING A PUSHING TONGUE
    Publication number: 20050109169
    Abstract: A wrench includes an open end which includes two jaws and a connection portion connected between the two jaws. A clamping portion is defined in an inside of each jaw and located close to a first side of each jaw. A loose portion is defined in the inside of each jaw and located close to a second side of each jaw. A width between the two respective loose portions of the two jaws is wider than a width between the two respective clamping portions of the two jaws. A pushing tongue is located between the two jaws. A nut can be clamped by the clamping portions of the two jaws by compressing the pushing tongue, and is freely rotatable relative to the open end when located in a space enclosed by the loose portions.
    Type: Application
    Filed: November 24, 2003
    Publication date: May 26, 2005
    Inventor: Chih-Ching Hsien
  • Wrench structure having a strengthened handle
    Patent number: 6895837
    Abstract: A wrench structure includes a wrench body having a handle portion. The handle portion is formed with a reinforcement portion having a first side formed with a first holding portion and a second side formed with a second holding portion. The first holding portion has a plane vertical to that of the second holding portion. Thus, the user's hand and the holding portion of the wrench body have a larger contact area, so that the holding portion of the wrench body can apply a larger force and torque to drive and rotate the workpiece, such as the nut or the like.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: May 24, 2005
    Inventor: Chih-Ching Hsien
  • Control mechanism for controlling head of a box end wrench
    Patent number: 6895839
    Abstract: A wrench includes a box end head with a protrusion extending therefrom and the protrusion has an inclined surface defined in a distal end thereof and a first engaging area defined in a part of the inclined surface. The protrusion is pivotably connected to the handle which has a transverse hole and a control member is movably received in the transverse hole along a longitudinal direction of the transverse hole. The control member has a second engaging area removably engaged with the first engaging area along the longitudinal direction of the transverse hole. The head can be pivoted relative to the handle when the second engaging area is moved away from the first engaging area by pushing the control member.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: May 24, 2005
    Inventor: Chih-Ching Hsien
  • Polygonal member engaging device
    Publication number: 20050092138
    Abstract: A polygonal member engaging device includes a plurality of ridges and grooves defined in an inner periphery of a passage of the engaging device. The ridges and the grooves are alternatively arranged from each other in the inner periphery of the passage of the device. Each ridge has an enlarged portion extending radially outward therefrom. A ratio for a width between the two enlarged portions of two adjacent ridges and a width of a bottom of each groove being 1:1.2.
    Type: Application
    Filed: October 30, 2003
    Publication date: May 5, 2005
    Inventor: Chih-Ching Hsien
  • Polygonal member engaging device
    Publication number: 20050092139
    Abstract: A polygonal member engaging device includes a box end and a handle connected to the box end. The box end has a hole for receiving an engaging ring therein which has a plurality of ridges and grooves defined in an inner periphery thereof a clamping hole of the engaging ring. The ridges and the grooves are alternatively arranged from each other in the inner periphery of the clamping hole and each ridge has an enlarged portion extending radially outward therefrom and a width “W1” between two adjacent enlarged portions of the ridges is smaller than a width “L1” of a bottom of each groove.
    Type: Application
    Filed: August 12, 2004
    Publication date: May 5, 2005
    Inventor: Chih-Ching Hsien
  • Pawl control mechanism for a ratchet tool
    Patent number: 6886428
    Abstract: A control mechanism for a ratchet tool includes a switch pivotably received in a chamber in the head of the tool and a pawl is received in a recess so as to be matched with a gear wheel in the head. The pawl is located at located at a mediate portion of a depth of the chamber in the head. The switch has two holes in each of which a pushing member a spring are received. The pushing member is received in the hole and covered by an inside of the chamber when the switch is not pivoted. The user may push either one of two ends of the pawl toward the chamber to shift one of the pushing members to be in alignment with one of the convex portions. The pushing member that is shifted pushes the convex portion and pivots the pawl to be matched with the gear wheel.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: May 3, 2005
    Inventor: Chih-Ching Hsien
  • Wrench having rotation adjustment effect
    Patent number: 6883404
    Abstract: A wrench includes a first handle provided with a first rotation seat, and a second handle provided with a second rotation seat rotatably mounted on the first rotation seat of the first handle. Thus, the first rotation seat of the first handle can be rotated relative to the second rotation seat of the second handle, so that the first handle has a driving face inclined with that of the second handle, thereby facilitating the user operating the first handle or the second handle to rotate the workpiece.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: April 26, 2005
    Inventor: Chih-Ching Hsien
  • Adjustable spanner
    Publication number: 20050081686
    Abstract: An adjustable spanner includes a main body having an end formed with a drive portion having a first side and a second side. The second side of the drive portion is formed with an inclined face inclined toward the first side of the drive portion. Thus, the adjustable spanner is provided with an inclined face, so that the adjustable spanner can be used to operate a screw member located adjacent to an obstruction or located at a deeper zone of a workpiece, thereby facilitating the user operating the adjustable spanner.
    Type: Application
    Filed: October 17, 2003
    Publication date: April 21, 2005
    Inventor: Chih-Ching Hsien
  • Golf club having stabilized air flow structure
    Patent number: 6881157
    Abstract: A golf club comprises a handgrip; a club head, and a club body between the first end and the second end. A cross section area of the club body includes a front portion having a first and a second including surfaces that define a front cusp in front of said first and said second inclined surfaces; a rear portion having a third and a fourth inclined surface that define a rear cusp at a rear connecting end of the third and fourth surfaces; and a middle section being curved inwards. In a direction from the handgrip to the club head, the club body has at least one reduced segment having a smaller size than other portion thereof, and a shoulder is formed between each reduced segment and an adjacent other portion of the golf club.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: April 19, 2005
    Inventor: Chih-Ching Hsien
  • Adjustable spanner having a torque detection function
    Publication number: 20050076753
    Abstract: A adjustable spanner includes a main body having a first end formed with a handle portion and a second end formed with a drive portion having a fixed jaw, a movable jaw movably mounted on the drive portion relative to the fixed jaw, and a torque detection device mounted on the main body to detect a torque of the adjustable spanner. Thus, the torque detection device is mounted on the connection of the handle portion and the drive portion having a smaller structural strength, so that the torque detection device can detect the torque of the adjustable spanner exactly and sensitively.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Inventor: Chih-Ching Hsien
  • Adjustable spanner
    Publication number: 20050076747
    Abstract: A adjustable spanner includes a main body formed with a fixed jaw and a slideway, an adjustment screw rotatably mounted in the main body, a movable jaw movably mounted on the main body and formed with a neck portion having a rack slidably mounted in the slideway and engaged with the adjustment screw, and two magnetic members mounted between the slideway and the movable jaw. Thus, the movable jaw is movable in the slideway smoothly by the repulsive effect between the magnetic members and the movable jaw or the main body, thereby facilitating the user operating the adjustable spanner.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Inventor: Chih-Ching Hsien
  • Wrench having greater torque
    Publication number: 20050076746
    Abstract: A wrench includes a drive portion formed with a receiving portion, a ratchet wheel mounted in the receiving portion and formed with a plurality of oblique concave portions, and a plurality of rollers each movably mounted in a respective one of the oblique concave portions and each urged on a wall of the receiving portion. An included angle defined between a bottom face of each of the oblique concave portions and a horizontal line of the drive portion is ranged from 5 and 30 degrees. Thus, the resultant driving force of the wrench passes through the ratchet wheel having a greater thickness, so that the wrench produces the maximum torque during operation.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Inventor: Chih-Ching Hsien
  • Telescopic socket assembly
    Patent number: 6877403
    Abstract: A telescopic socket assembly includes an outer socket, an inner socket retractably and movably mounted in the outer socket, and an elastic member mounted between the inner socket and the outer socket. Thus, the telescopic socket assembly has an adjustable length and can be used to operate workpieces having different sizes. In addition, the telescopic socket assembly has a two-stage or three-stage position adjustment function.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: April 12, 2005
    Inventor: Chih-Ching Hsien
  • One-way ratchet wrench
    Patent number: 6874391
    Abstract: A one-way ratchet wrench includes a wrench body, a ratchet wheel, an elastic member, and a pawl member. Thus, the elastic member limits transverse and longitudinal movement of the locking portion of the pawl member, so that the pawl member is positioned rigidly and stably. In addition, the locking portion of the pawl member is rested on a side of the elastic member, thereby preventing the elastic member from producing fatigue.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: April 5, 2005
    Inventor: Chih-Ching Hsien
  • Spanner
    Patent number: D506372
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: June 21, 2005
    Inventor: Chih-Ching Hsien
  • Wrench
    Patent number: D506373
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: June 21, 2005
    Inventor: Chih-Ching Hsien