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).

  • Socket
    Publication number: 20050061116
    Abstract: A socket includes a main body including a first cylinder having an outer periphery formed with a plurality of outer teeth, and a second cylinder having an inner periphery formed with a plurality of inner teeth. The inner teeth of the main body and the outer teeth of the main body have the same tooth number and have the corresponding tooth shape. Thus, the sockets can co-operate with each other to increase the working length, and the sockets co-operating with the ratchet wrench can be used in an elongated shallower space.
    Type: Application
    Filed: September 19, 2003
    Publication date: March 24, 2005
    Inventor: Chih-Ching Hsien
  • Lamp assembly attached on a hand tool
    Publication number: 20050047124
    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: Application
    Filed: August 29, 2003
    Publication date: March 3, 2005
    Inventor: Chih-Ching Hsien
  • Hand tool having a quick driving effect
    Publication number: 20050044994
    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: Application
    Filed: August 29, 2003
    Publication date: March 3, 2005
    Inventor: Chih-Ching Hsien
  • Box end of wrench
    Patent number: 6860176
    Abstract: A wrench includes a box end which has a through hole and a polygonal inner periphery is defined in an inner periphery of the through hole and located close to a first side of the box end. A plain inner surface is defined in the inner periphery of the through hole and located close to a second side of the box end. An inner diameter of the plain inner periphery is larger than an inner diameter of the polygonal inner periphery. A spring member is engaged with the through hole of the box end and enclosed by the polygonal inner periphery. A nut can be engaged with the polygonal inner periphery by pressing the spring member and is rotated with the wrench, or is freely rotatably engaged with the plain inner surface while the spring member is not compressed.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: March 1, 2005
    Inventor: Chih-Ching Hsien
  • Hand tool having a larger operation zone
    Publication number: 20050034570
    Abstract: A hand tool includes a main body provided with a mounting portion including a plurality of arcuate protruding faces and a plurality of receiving recesses located between the protruding faces. Each of the receiving recesses has a smaller arc-shaped corner. The proportion of the depth of each of the protruding faces and the distance between the corner of each of the receiving recesses and the corner of an adjacent receiving recess is equal to 1:1.6. Thus, each of the protruding faces is closely rested on the flattened face of the nut rigidly and stably so as to prevent slip of the nut.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 17, 2005
    Inventor: Chih - Ching Hsien
  • Hand tool having an extendable handle structure
    Publication number: 20050034574
    Abstract: A hand tool includes two half portions pivotally connected with each other, and two opposite magnetic members each mounted in a respective one of the two half portions. The two opposite magnetic members are repulsive with each other, so that the two half portions are extended outward relative to each other by the repulsive action between the two magnetic members.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 17, 2005
    Inventor: Chih - Ching Hsien
  • Hand tool having an adjustable handle
    Publication number: 20050034572
    Abstract: A hand tool includes an operation shank having a periphery formed with two opposite flattened faces each formed with an elongate slide slot, a movable handle slidably mounted on the operation shank, and two fixing pins each extended through the movable handle and each having a distal end slidably mounted in the slide slot of a respective one of the two opposite flattened faces of the operation shank. Thus, the movable handle can slide longitudinally so as to adjust the working length of the hand tool, thereby facilitating the user operating the hand tool.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 17, 2005
    Inventor: Chih-Ching Hsien
  • Flashlight having a power indication function
    Publication number: 20050036306
    Abstract: A flashlight includes a main body having an inside formed with a receiving space, a power supply mounted in the receiving space of the main body, and a temperature sensing plate mounted on a periphery of the main body and electrically connected to the power supply in a parallel manner. Thus, the color of the temperature sensing plate is gradually changed, so that by the zone of the color variation of the temperature sensing plate, the electric power of the power supply can be detected, such that the user can identify magnitude of the electric power of the power supply.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 17, 2005
    Inventor: Chih-Ching Hsien
  • HAND TOOL HAVING A RETRACTABLE HANDLE STRUCTURE
    Publication number: 20050034573
    Abstract: A hand tool includes a retractable shank, a handle, an elastic member, and at least one fixing pin. Thus, the rod assembly of the retractable shank can be retracted into and expanded outward from the receiving chamber of the handle so as to adjust the distance between the retractable shank and the handle, so that the working length of the hand tool can be adjusted easily, rapidly and arbitrarily.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 17, 2005
    Inventor: Chih - Ching Hsien
  • Hand tool having an adjustable holding portion
    Publication number: 20050028653
    Abstract: A hand tool includes a head portion, and a handle portion rotatably mounted on the head portion. Thus, the handle portion can be rotated relative to the head portion to the optimum angle, so that the user' one hand can hold the handle portion smoothly and comfortably, thereby facilitating the user operating the hand tool.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 10, 2005
    Inventor: Chih-Ching Hsien
  • Screwdriver having larger driving force
    Publication number: 20050028654
    Abstract: A screwdriver includes a tip has a first end formed with a first resting portion, a second end formed with a second resting portion, and a mediate section formed with an auxiliary resting portion. Thus, by provision of the auxiliary resting portion, the first resting portion and the second resting portion are slightly bent and deformed and are entirely flush with the wall of the groove of the screw to increase the contact area between the tip and the screw, so that the tip of the screwdriver can apply a larger driving force to drive the screw, thereby facilitating the user rotating the screw.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 10, 2005
    Inventor: Chih-Ching Hsien
  • Bent wrench having torque measurement function
    Publication number: 20050028656
    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: Application
    Filed: August 8, 2003
    Publication date: February 10, 2005
    Inventor: Chih-Ching Hsien
  • Hand tool having a bendable holding portion
    Publication number: 20050028652
    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: Application
    Filed: August 8, 2003
    Publication date: February 10, 2005
    Inventor: Chih-Ching Hsien
  • Multipurpose socket wrench
    Patent number: 6851334
    Abstract: A multipurpose socket wrench includes a handle having a box at one end, a driving member, the driving member having a hollow ratchet unit disposed at one side and coupled to the box of the handle and a coupling unit with equiangularly spaced pawls disposed at the other side, and a socket for use with the driving member and the handle to rotate a bolt or nut, the socket having a polygonal coupling hole disposed at one side and adapted to receive the workpiece and a plurality of pawls equiangularly spaced at the other side for engagement with the pawls of the driving member for enabling the socket to be driven by the handle to rotate the workpiece.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: February 8, 2005
    Inventor: Chih-Ching Hsien
  • Detachable lamp for hand tool
    Patent number: 6851824
    Abstract: A detachable lamp for hand tool is disclosed to include a first lamp unit, a second lamp unit, and a mounting unit connected between the lamp units and adapted to secure the lamp units to the metal body of a hand tool, each lamp unit having a lamp circuit assembly formed of a battery, a conductor, a switch, and a lamp bulb, the mounting unit having a fixed magnetic member adapted to secured the detachable lamp to the metal body of a hand tool by magnetic attraction.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: February 8, 2005
    Inventor: Chih-Ching Hsien
  • Screwdriver assembly
    Patent number: 6851340
    Abstract: A screwdriver assembly includes a handle, a shank mounted on the handle and having a fork-shaped first end formed with two opposite pivot ears and an opening located between the two opposite pivot cars, and a screwdriver head pivotally mounted in the opening of the shank between the two opposite pivot ears. Thus, screwdriver assembly that can save the user's energy and manual work, thereby facilitating the user rotating the screw member.
    Type: Grant
    Filed: March 29, 2003
    Date of Patent: February 8, 2005
    Inventor: Chih-Ching Hsien
  • Screw member
    Publication number: 20050022636
    Abstract: A screw member includes a main body having a first end provided with a head portion and a second end provided with a threaded portion. The head portion has a center formed with a substantially Y-shaped insertion recess including three locking grooves. The three locking grooves of the insertion recess of the head portion are equally divided portions of the circular head portion, so that the tip of the screwdriver is combined with the head portion in a co-planar three-point contact manner. Thus, the screw member is combined with the screwdriver rigidly and stably.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 3, 2005
    Inventor: Chih-Ching Hsien
  • Telescopic socket assembly
    Publication number: 20050022632
    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: Application
    Filed: July 30, 2003
    Publication date: February 3, 2005
    Inventor: Chih-Ching Hsien
  • Ratchet tool with magnetic engaging member
    Patent number: 6845691
    Abstract: A ratchet tool includes a head having a hole defined therethrough in which an engaging member is rotatably received. A chamber defined in the inner periphery of the hole and a pawl is movably received in the chamber. A flange extends from an end of the engaging member and is located outside of the hole. A groove is defined in the outer periphery of the engaging member and two magnetic members are engaged with the groove so that the object is attached with the engaging member by the magnetic members. The object can also be further rotated by rotating the flange.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: January 25, 2005
    Inventor: Chih-Ching Hsien
  • Magnetic socket
    Publication number: 20050014596
    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: Application
    Filed: July 14, 2003
    Publication date: January 20, 2005
    Inventor: Chih-Ching Hsien