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).

  • Wrench having a holding structure
    Publication number: 20040206213
    Abstract: A wrench having a holding structure includes a handle having a mediate section formed with a distorted portion, and an anti-skid rubber jacket coated on the distorted portion of the handle to enhance the holding force on the wrench. Thus, the anti-skid rubber jacket coated on the distorted portion of the handle can enhance the holding force of the user's thumb, thereby preventing the user's thumb from slipping due to the grease attached on the surface of the wrench.
    Type: Application
    Filed: April 18, 2003
    Publication date: October 21, 2004
    Inventor: Chih-Ching Hsien
  • Pawl selection mechanism for ratchet tools
    Patent number: 6805027
    Abstract: A pawl controlling device for a ratchet tool includes a selection member movably connected to the tool and having a through hole in which a bead, a biasing piece and a spring are received, wherein the spring is located between the bead and the biasing piece. The bead is engaged with one of two positioning recesses defined in the slot in which the selection member is received, and the biasing piece is engaged with one of two concavities defined in a side of the pawl which is matched with the engaging member. The pawl is shifted to have one of two ends thereof contacting against an inside of the recess for receiving the pawl.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: October 19, 2004
    Inventor: Chih-Ching Hsien
  • GOLF TEE STRUCTURE WITH ADJUSTABLE HEIGHT
    Publication number: 20040204268
    Abstract: A golf tee structure includes a lower body, and an upper body. The lower body has an inside formed with a hollow portion. The upper body is adjustably mounted on the lower body and has a lower portion formed with an adjusting rod retractably mounted in the hollow portion of the lower body. Thus, the height of the golf tee structure can be adjusted arbitrarily so as to fit the requirement of users of different stature. In addition, the adjusting rod of the upper body can be locked on the hollow portion of the lower body rigidly and stably.
    Type: Application
    Filed: April 9, 2003
    Publication date: October 14, 2004
    Inventor: Chih-Ching Hsien
  • Flashlight with convex lens assembly providing multiple focuses
    Patent number: 6802622
    Abstract: A flashlight having multiple focuses includes a tubular body for receiving a power supply device therein and a cap is connected to the tubular body. A bulb and reflection disk assembly is independently received in the cap and includes a plurality of bulbs connected to a reflection disk. The bulb and reflection disk assembly is electrically connected to the power supply device and a lens assembly including a plurality of convex lenses is fixedly connected to the cap and located in front of the bulbs. The convex lenses are rotated relative to the bulbs by rotating the cap so as to have different illumination features with different focuses.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: October 12, 2004
    Inventor: Chih-Ching Hsien
  • Manufacturing procedure of hand tool
    Publication number: 20040188268
    Abstract: A manufacturing procedure of a hand tool includes the steps of: forging the workpiece, annealing the workpiece, rolling the workpiece in a barrel, performing a first surface treatment, machining the surface of the workpiece, performing a heat treatment on the workpiece, performing a second surface treatment, performing a third surface treatment, vibrating the workpiece, and electroplating the workpiece. Thus, the whole surface of the hand tool has the same color and brightness, thereby enhancing the aesthetic quality of the hand tool.
    Type: Application
    Filed: March 29, 2003
    Publication date: September 30, 2004
    Inventor: Chih-Ching Hsien
  • Screwdriver assembly
    Publication number: 20040187649
    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 ears, 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: Application
    Filed: March 29, 2003
    Publication date: September 30, 2004
    Inventor: Chih-Ching Hsien
  • Tension meter and wrench arrangement
    Patent number: 6784799
    Abstract: A tension meter and wrench arrangement is constructed to includes a resistance type tension meter and an integrated device installed in a wrench, the integrated device providing a voltage output corresponding to the variation of resistance detected by the tension meter and converting the voltage output into digital signal for display through a display screen, the wrench having a sliding sleeve adapted for protecting the integrated device.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: August 31, 2004
    Inventor: Chih-Ching Hsien
  • Angle adjustable hand tools
    Publication number: 20040163503
    Abstract: An angle adjustable hand tool includes a handle having two lugs extending from an end thereof and a function end having an insertion extending from a surface thereof. The insertion is pivotably connected between the two lugs. Two shoulders extend from two sides of the surface and respectively contact top or bottom surface of the lugs when the function end is pivoted at a pre-set maximum angle such as 60 degrees.
    Type: Application
    Filed: February 24, 2003
    Publication date: August 26, 2004
    Inventor: Chih-Ching Hsien
  • Screwdriver with multiple tip planes
    Publication number: 20040159195
    Abstract: A screwdriver includes a handle with a shank and a tip end is formed on a distal end of the shank. The tip end includes three tip planes which are oriented in different directions with each other. The tip planes allows the shank of the screwdriver to be engaged with the bolt heads inclinedly.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 19, 2004
    Inventor: Chih-Ching Hsien
  • Torque test device
    Patent number: 6772645
    Abstract: A torque test device includes a body in which a rotatable member is received and an engaging end on an end of the rotatable member extends out from the body. A rod and a pushing member respectively extend from a periphery of the rotatable member. A gauge is located on a top of the body and an activation bar extends from the gauge and inserts into the body. The activation bar contacts the pushing member. A spring has an end contacting an inside of the body and the other end of the spring contacts the rod. A wrench is engaged with the engaging end and rotates the rotatable member. The pushing member pushes the activation bar and the torque is displayed on the gauge. The spring assists the rod back to its original position.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: August 10, 2004
    Inventor: Chih-Ching Hsien
  • Wrench having torque indicator
    Patent number: 6766700
    Abstract: A wrench includes a handle having an engaging end at one end of the handle and a sleeve is slidably mounted to the handle. A tension gauge is received in the handle and connected to an electronic display screen. The display screen is exposed to an outer surface of the handle and can be covered by the sleeve.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: July 27, 2004
    Inventor: Chih-Ching Hsien
  • Engagement structure of C-shaped clamp and engaging ring of head ratchet tools
    Publication number: 20040139826
    Abstract: A ratchet tool includes a head and an engaging ring is rotatably received therein. The head has a first opening and a second opening respectively defined in two sides of the head. A first stepped portion and a second stepped portion are respectively defined in an inside of a periphery of the first opening and the second opening. The engaging ring has two necks respectively extend from two opposite ends of the engaging ring and one of the necks has a flange extending outward from a distal edge thereof so as to define a groove between an end of the teeth and the flange. The second stepped portion has an inclined inside so that a C-shaped clamp is easily engaged with the groove and the second stepped portion via the inclined inside.
    Type: Application
    Filed: April 18, 2003
    Publication date: July 22, 2004
    Inventor: Chih-Ching Hsien
  • Engaging ring with a larger area of outer tooth of ratchet tools
    Publication number: 20040139824
    Abstract: A ratchet tool includes a head with a hole so as to receive an engaging ring therein. A first opening and a second opening are respectively defined in two sides of the head. A first stepped portion and a second stepped portion are respectively defined in an inside of a periphery of the first opening and the second opening. Two necks respectively extend from two opposite ends of the engaging ring. An outer diameter of the necks is smaller than an outer diameter of the teeth on the engaging ring which is engaged with a pawl in the head. One of the necks has a flange extending outward from a distal edge thereof so as to define a groove between an end of the teeth and the flange. The two necks are engaged with the two stepped portions. A C-shaped clamp is engaged with the groove and the stepped portion corresponding thereto.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 22, 2004
    Inventor: Chih-Ching Hsien
  • Engagement structure of C-shaped clamp and engaging ring of head ratchet tools
    Publication number: 20040139825
    Abstract: A ratchet tool includes a head and an engaging ring is rotatably received therein. The head has a first opening and a second opening respectively defined in two sides of the head. A first stepped portion and a second stepped portion are respectively defined in an inside of a periphery of the first opening and the second opening. The engaging ring has two necks respectively extend from two opposite ends of the engaging ring and one of the necks has a flange extending outward from a distal edge thereof so as to define a groove between an end of the teeth and the flange. The second stepped portion has an inclined inside so that a C-shaped clamp is easily engaged with the groove and the second stepped portion via the inclined inside.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 22, 2004
    Inventor: Chih-Ching Hsien
  • Metal piece attraction device on ratchet tool
    Patent number: 6761092
    Abstract: A ratchet tool includes a head and an engaging member is rotatably received in a hole of the head. The engaging member has a polygonal inner periphery for engaging a nut and a toothed outer periphery which is engaged with a pawl movably connected to the head. A magnetic member is connected to a side of the engaging member and protrudes into a space enclosed by the polygonal inner periphery of the engaging member. A ring is mounted to the engaging member and the magnetic member is connected to the ring and the engaging member. The nut is engaged with the engaging member and attracted to the magnetic member and is easily to removed by rotating the ring.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: July 13, 2004
    Inventor: Chih-Ching Hsien
  • Sealing device for flashlights
    Patent number: 6761464
    Abstract: A flashlight includes a tubular body with a power supply device received therein via an open end of the body. A cap is connected to the open end and has a groove defined in an inner periphery thereof A bulb and reflection disk assembly is engaged with the cap and a lens is engaged with the cap. A seal is engaged with the groove and mounted to an outer periphery of the open end of the tubular body. The seal has a dumb-bell shaped cross section.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: July 13, 2004
    Inventor: Chih-Ching Hsien
  • Compact structure for controlling movement of pawl for ratchet tools
    Patent number: 6761091
    Abstract: A compact structure for controlling movement of the pawl of a ratchet tool includes a selection member movably connected to the tool and a through hole is defined through the selection member. A spring and a bead are received in the through hole and the bead is engaged with one of two positioning recesses in the slot, and the spring is engaged with a notch defined in the pawl. The pawl is shifted to allow one of two ends thereof contact against an inside of the recess of the tool by moving the selection member.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: July 13, 2004
    Inventor: Chih-Ching Hsien
  • Handle for hand tools
    Publication number: 20040123703
    Abstract: A hand tool includes a handle having a function end connected to one of two ends of the handle and a through hole is defined through the handle. The through hole is defined by two serrated insides.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventor: Chih-Ching Hsien
  • Method for making a gear with 90-180 teeth
    Publication number: 20040123461
    Abstract: A method for making a gear with 90-180 teeth includes step 1 of forging an initial product of the gear; step 2 of annealing the initial product of the gear; step 3 of trimming the initial product of the gear; step 4 of grinding the initial product of the gear; step 5 of rolling the initial product of the gear to have 90 to 180 teeth; step 6 of proceeding the gear in step 5 with a heat treatment; and step 7 of proceeding the gear in step 6 with surface treatment.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventor: Chih-Ching Hsien
  • Wrench
    Patent number: D496238
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: September 21, 2004
    Inventor: Chih-Ching Hsien