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).

  • Lamp assembly attached on a hand tool
    Patent number: 6951409
    Abstract: A lamp assembly includes a positioning seat, and an illumination device rotatably mounted on the positioning seat, so that an included angle between the illumination device and the positioning seat can be adjusted. Thus, the rotary body of the illumination device is rotated about the positioning body of the positioning seat, so that the illumination device can be rotated through 360 degrees so as to provide an illumination effect.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: October 4, 2005
    Inventor: Chih-Ching Hsien
  • Box end wrench
    Patent number: 6948407
    Abstract: A box end wrench includes an annular flange extending from a first side thereof and an inner diameter is larger than a maximum inner diameter of the box end. A compressible member is engaged with a second side of the box end and can be compressed by an object engaged with the box end. The compressible member pushes the object from the toothed inner periphery of the box end to a space enclosed by the annular flange, so that the object is retained in the box end while the handle of the wrench is allowed to be rotated in counter clockwise.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: September 27, 2005
    Inventor: Chih-Ching Hsien
  • Handle of a hand tool
    Publication number: 20050199107
    Abstract: A handle of a hand tool includes two opposite wide surfaces and two opposite narrow sides. The wide surfaces are perpendicular to the rotational direction when using the tool so that the fingers except for the thumb are in contact with the wide surfaces. Each wide surface has a reinforcement protrusion extending perpendicularly therefrom and located close to the driving end of the hand tool. Each reinforcement protrusion includes a thumb area such that the user's thumb may press on the thumb area when rotating the handle.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 15, 2005
    Inventor: Chih-Ching Hsien
  • Dual function wrench
    Publication number: 20050199109
    Abstract: A dual function wrench includes two different function ends at the head of the wrench and the two different function ends are overlapped with each other. Each function end includes a clamping space and the two respective clamping spaces are in communicating with each other.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 15, 2005
    Inventor: Chih-Ching Hsien
  • BOX END WRENCH
    Publication number: 20050199104
    Abstract: A box end wrench includes an annular flange extending from a first side thereof and an inner diameter is larger than a maximum inner diameter of the box end. A compressible member is engaged with a second side of the box end and can be compressed by an object engaged with the box end. The compressible member pushes the object from the toothed inner periphery of the box end to a space enclosed by the annular flange, so that the object is retained in the box end while the handle of the wrench is allowed to be rotated in counter clockwise.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 15, 2005
    Inventor: Chih-Ching Hsien
  • Pliers
    Patent number: 6941846
    Abstract: A pair of pliers include two pivot members pivotally connected with each other. Each of the two pivot members has an end formed with a handle including an upper auxiliary body and a lower auxiliary body to enhance a hand-held area of the handle, thereby facilitating a user' hand holding the handle. In addition, the handle of each of the two pivot members has an upper auxiliary body and a lower auxiliary body to provide a better holding effect to the user, so that the user has a comfortable sensation when holding the handle.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: September 13, 2005
    Inventor: Chih-Ching Hsien
  • Hand tool having bendable holding portion
    Patent number: 6941845
    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: Grant
    Filed: December 5, 2003
    Date of Patent: September 13, 2005
    Inventor: Chih-Ching Hsien
  • Engaging recess for sockets
    Patent number: 6938524
    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: Grant
    Filed: November 24, 2003
    Date of Patent: September 6, 2005
    Inventor: Chih-Ching Hsien
  • Adjustable spanner having a torque detection function
    Patent number: 6931969
    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: Grant
    Filed: October 9, 2003
    Date of Patent: August 23, 2005
    Inventor: Chih-Ching Hsien
  • Wrench with display device
    Publication number: 20050178248
    Abstract: A display device is connected to a head of a wrench including a fixed jaw and a movable jaw. A variable electric resistor is connected to a side of the head and electrically connected to the display device. The movable jaw has a contact member which is movably in contact with the variable electric resistor. The changes of the value of electric resistance of the variable electric resistor is transformed into digitals to show the distance between the fixed jaw and the movable jaw, that is, the size of an object clamped between the fixed jaw and the movable jaw.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 18, 2005
    Inventor: Chih-Ching Hsien
  • Reinforcement structure for adjustable wrenches
    Patent number: 6928905
    Abstract: An adjustable wrench includes a handle with a fixed jaw extending from a head of the wrench and a groove is defined in an end of the head and communicates with a through hole defined transversely through the head. The through hole forms a circular hole in an outer surface of the head and located beside a root portion of the fixed jaw. A movable jaw has a cylindrical rack piece which is movably inserted in the groove and the through hole. A flange is connected between the movable jaw and the rack piece. A thumb screw is rotatably engaged with a hole defined through the head and engage with the rack piece.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: August 16, 2005
    Inventor: Chih-Ching Hsien
  • Hand tool having a quick driving effect
    Patent number: 6928904
    Abstract: A hand tool includes a driving member, and a wrench body mounted on the driving member. The wrench body includes a handle, a driving head mounted on an end of the handle, and a locking portion rotatably mounted on the driving head and inserted into the mounting hole of the driving member. Thus, the wrench body can drive the driving member to rotate through 360 degrees reciprocally so as to rotate and unscrew the nut successively, so that the driving member can be used to unscrew the workpiece easily and rapidly.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: August 16, 2005
    Inventor: Chih-Ching Hsien
  • Magnetic socket
    Patent number: 6925914
    Abstract: A magnetic socket includes a main body, an urging ring, an elastic member, and a retaining ring. Thus, the urging ring is provided with a magnetic member to provide a magnetic effect, so that the workpiece is attracted by the magnetic member without detachment, thereby facilitating the user mounting and removing the workpiece.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: August 9, 2005
    Inventor: Chih-Ching Hsien
  • Bent wrench having torque measurement function
    Patent number: 6920811
    Abstract: A bent wrench includes a wrench body including a handle formed with a bent portion, and at least one strain gauge mounted on a connection of the handle and the bent portion to measure the torque of the wrench body. Thus, the strain gauge is extended through the connection of the bent portion and the two ends of the handle and can measure the torque of the wrench body in the optimum manner due to the smallest structural strength of the connection of the bent portion and the two ends of the handle, so that the strain gauge can measure the torque of the wrench body exactly and optimally.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: July 26, 2005
    Inventor: Chih-Ching Hsien
  • Hand tool having a bendable holding portion
    Patent number: 6918324
    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 each having a first end pivotally mounted on an end of a respective one of the two jaw portions of the head portion, and a connecting rod mounted between the two holding grips of the handle portion, so that the two holding grips of the handle portion can be moved and bent relative to the two jaw portions of the head portion synchronously. Thus, the included angle between the handle portion and the head portion can be adjusted easily and rapidly.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: July 19, 2005
    Inventor: Chih-Ching Hsien
  • Pawl control structure ratchet tools
    Patent number: 6912935
    Abstract: A ratchet tool includes a head with an engaging member rotatably received in a hole in the head and a recess is defined in an inner periphery of the hole so as to receive a pawl therein. A chamber is defined in a side of the head and communicates with the recess. A knob is rotatably received in the chamber and a biasing member is connected between the pawl and the knob. The biasing member is a V-shaped member and includes two insertions which are connected to a side of the pawl, and a peak portion which is securely connected to a protrusion extending eccentrically from an inside of the knob. The pawl is shifted by the biasing member when rotating the knob.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: July 5, 2005
    Inventor: Chih-Ching Hsien
  • Wrench type spanner
    Patent number: D506371
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: June 21, 2005
    Inventor: Chih-Ching Hsien
  • Socket
    Patent number: D506908
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: July 5, 2005
    Inventor: Chih-Ching Hsien
  • Movable spanner
    Patent number: D507163
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: July 12, 2005
    Inventor: Chih-Ching Hsien
  • Wrench
    Patent number: D507946
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: August 2, 2005
    Inventor: Chih-Ching Hsien