Abstract: An adjustable spanner with electronic strain gauge function which comprises a head; an fixed jaw extending from the head; and sliding groove being transversally formed at one upper side of the head; a handle connected to a lower side of the head; at least one strain gauge; a hollow connecting tube having one end connected to the handle; the hollow connecting tube being installed with an output display device; a clamping surface of the moveable jaw and a clamping surface of the fixed jaw being formed as a working area for clamping a screw device; and a positioning portion being installed on the moveable jaw and at a non-working area below the working area; the position portion facing toward a clamping opening between the clamping surfaces of the moveable jaw and fixed jaw; and the positioning portion being capable of resisting against the screw device.

Abstract: An exhibition device for reversal spanners includes a suspending plate having a buckling hole; a periphery of the buckling hole being formed with a notch so as to form as a confining unit; an inner side of the confining unit having a plurality of limiting teeth; and a seat; a connecting unit extending from the seat; the connecting unit being rotatably buckled to the buckling hole; a ratchet portion being formed on a surface of the connecting unit; the ratchet portion being not aligned to the notch; and the ratchet portion being engageable to the limiting teeth.

Abstract: A hand tool locking device for a hand tool includes a switch member having a shank which is rotatably inserted in a recess defined in the head of the hand tool and the shank includes a convex and curved surface and a flat surface. A pawl and a spring are received in a passage defined in an inside of the yoke of the head of the hand tool. The pawl has teeth defined in a first end thereof and the teeth are pushed to engage with engaging teeth of the pivotable tool head when the convex and curved surface of the shank pushes a second end of the pawl toward the tool head. When the shank is rotated to let the flat surface to contact the second end of the pawl, the teeth of the pawl are disengaged from the engaging teeth of the pivotable tool head.

Abstract: A display bracket for a wrench that achieves the purpose of economizing exhibition space comprises a locking hole capable receiving a cylindrical connecting member of a mount of and a main body further consisting of a flexible piece near the locking hole, whereby the main body will connected to the mount by a plurality of arced projection around the connecting member. The connecting member can further secured with the maim body by the engagement between a ratchet on the outer rim thereon and the flexible piece. Thereby, the wrench can be hung on the display bracket for exhibition.

Abstract: A hand tool includes a handle having a connection end which includes two parallel arms and a driving member has an insertion which is pivotably connected between the two arms by a pin which extends through the two arms and the engaging notch of the insertion. The driving member can be easily replaced by disengaging the pin from the engaging recess of the driving member.

Abstract: A wrench comprises a main body including a handle and a head including a fixed jaw and a groove and a passage which is located parallel to and communicates with the groove, a through hole defined through the head and communicating with the groove and the passage. A mediate member made of metal and integrally connected with the head by using injection, and including a protrusion, a tubular portion and a frame with an opening, the protrusion connected to the fixed jaw, the tubular portion engaged with the groove and the frame engaged with the through hole. A movable jaw made of metal and including a sliding rod slidably received in the tubular portion, a plurality of teeth defined in an underside of the sliding rod. An adjusting member made of metal and engaged with the opening of the frame, the adjusting member engaged with the teeth of the sliding rod.

Abstract: A rotary wrench display bracket comprises a retaining frame composed of a swing arm and a U-shaped retaining plate. A pivotal portion is extended from the retaining frame, whereby the retaining frame will rotate about the pivotal portion through the swing arm. The retaining frame further includes an inner U-shaped flexible plate for retaining a wrench going into the retaining frame. Thereby, the wrench can be secured on the display bracket and can swing smoothly about a connecting mount it is confined.

Abstract: A toothless adjustable spanner includes a handle, a head at one end of the handle; a fixing jaw extending from the head; the head being formed with a sliding groove and a receiving groove in the head and communicated to the sliding groove; a sliding rod being received in the sliding groove and installed below a movable jaw; the movable jaw being installed in the sliding groove; the sliding rod has an inclined lower surface; at least one rolling rod being installed in the receiving groove; an elastic unit resisting against rolling rod toward the movable jaw so that the rolling rod resists against the inclined lower side of the sliding rod; at least one driving sheet installed at one outer side of an opening of the receiving groove; and the sliding rod being installed to the driving sheets so that the sliding rod moves as the driving sheets move.

Abstract: A wrench capable of switching sense of rotation comprises a handle, a head portion formed on one end of the handle and a switch mounted on the head portion of the handle. The head portion further comprises a ratchet wheel, a claw piece and an inverting piece. The switch further comprises two driving pieces downwardly extended from two lateral sides thereof. As either side of the switch is pressed down, the associated driving piece will be pushed against the inverting piece with a sloppy wall thereof, so as to restrict the rotation of the ratchet in one angular direction.

Abstract: An adjustable spanner capable of adjusting size of an opening rapidly comprises a handle having a head and a fixing jaw; the handle having a sliding groove and a sliding path; an inner sliding path being extended with a shoulder; a movable jaw having a guide portion at one end thereof; a lower side of the guide portion having a teeth portion; a sliding block being installed in the sliding path; the sliding block having a teeth portion near the movable jaw and an elastic unit at a position far away from the movable jaw; and at least one pressible unit having an connecting unit and an operation portion; the connecting portion being connected to the sliding block; and the operation portion being at one side of the handle; an inner side of the pressible unit having buckling unit for resisting against the shoulder of the sliding path.

Abstract: An electric wrench comprises a main body with a head portion, a handle and a neck portion, a worm gear disposed in a receptacle in the head portion and engaged with a movable jaw on top of the head portion, a flexible member disposed between the worm gear and a major gear wheel, a motor housed in a first open space in the main body and connected to a minor gear wheel below the major gear wheel through a second transmission member electrically connected to a battery in a second open space in the main body, a switch unit electrically connected the motor for controlling the activation of the motor and a side cover detachable for covering the first and the second open spaces. Thereby, the motor can drive a slide motion of the movable jaw through the various transmission parts so as to change the clip size of the electric wrench.

Abstract: A ratchet wrench includes a handle with a head portion at an end thereof, a ratchet wheel mounted in the head portion for rotation, and an operating device to be moved between a first position and a second position for change of a driving orientation of the ratchet wrench. The ratchet wrench of the present invention further provides a light and a battery. The light is turned on when the operating device is moved to the first position and is turned off when the operating device is moved to the second position. User may watch the light signal to identify the driving orientation of the ratchet wrench.