Abstract: A door hinge is adapted to connect a door to a vertical metal post of a sectional rack, so that an enclosed storage space may be provided on the sectional rack. The door hinge includes a fixing member for connecting to the door, a hanger for hooking to the vertical post, an adjusting member connected to the hanger, and a turning member, a spring leaf, and a torsion spring mounted between the adjusting member and the fixing member. A cushion pad is positioned between the hanger and the post and forced against the post by a tightening screw, so that two hooks provided on the hanger may be tightly engaged with hook eyes provided on the post. The door connected to the fixing member may therefore be pivotally connected to the vertical post.

Abstract: A drawer rail structure includes two guide rails mounted to a piece of furniture, and two slide rails mounted to a drawer. Each of the guide rails is provided at a front end with a first roller, and each of the slide rails at a rear end with a second roller and at an upper edge with an inward stop plate. The stop plates press against tops of the first rollers when the second rollers rotate along the guide rails, guiding the drawer to slide in correct directions. An adjusting screw is provided at an outer end of each stop plate, and a spring plate is located below the adjusting screw to press against the top of the first roller. When the adjusting screw is turned to push the spring plate to a different height, a front panel of the drawer may be adjusted to a different vertical position.

Abstract: A walker particularly suitable for rehabilitation of a patient's legs includes a base provided with casters, a pair of handlebars, and a suspension frame for holding a safety belt. A leg separator is height-adjustably connected to the base to locate between and separate apart the patient's two legs, so that a cerebral palsied patient may bear inner sides of two legs against two lateral sides of the leg separator during practicing walking. Direction control members adapted to limit the casters to rotate forward and backward only are provided on the base to effectively enable the cerebral palsied patient to practice walking straightly forward.

Abstract: An integrally molded palm-size multi-functional massage device has a thicker rear end and a thinner front end. A central portion of the rear end has an upper and a lower projection to define between them a largest height of the massage device. The massage device has an upper and a lower surface respectively extending from the rear upper and lower central projections toward the front end and two lateral sides of the massage device, so that the front end and the two lateral sides are reduced in thickness. A recess is formed on the upper surface, and an area outside the recess is slightly upward curved and has multiple rib strips provided thereon. While the upper surface provides a frictional massaging effect, projections formed on outer edges of the massage device serve as pressing points adapted to create different magnitudes of pressure against a user's body.

Abstract: A socket capable of adapting itself to an open end of one of a plurality of wrenches of different sizes is disclosed. The socket comprises a lower connecting section including a cavity, and a four-sided actuation block projected from a top of the connecting section, the actuation block including two curved bearing surfaces having different curvatures. The actuation block is operable to be held by an open end of the wrench with two opposite interior surfaces of the open end of the wrench being in contact with two points of the bearing surfaces so that turning the wrench will fasten or unfasten an object coupled to the cavity.

Abstract: A knapsack with stereophonic reproducing kit mainly includes a knapsack having pockets provided at predetermined positions for receiving a musical sound source and two speakers that together form basic items in the stereophonic reproducing kit. A user may enjoy listening to music or broadcast alone or with other companions at any time and at any place while carrying the knapsack on the back or on the shoulder.

Abstract: A wrench comprises an enclosed box portion comprising an opening having an upper groove, an internal crescent cavity adjacent a handle and being in communication with the opening, a positioning mechanism including a ring disposed in the opening and a spring urged against a wall of the cavity, a pawl in the cavity leaned against the wall of the cavity, a ring member having an annular recess, a flexible C-ring put on the recess, and a ratchet wheel in the opening and having an upper portion with the ring member fitted therearound so that the C-ring can be disposed in both the recess and the groove. Counterclockwise rotating the wrench will transfer exerted force to projections on an inner wall of the opening since the pawl is prevented from rotating about the ratchet wheel. Clockwise rotating the wrench will disable the projections for enabling an angle adjustment of exerted force.

Abstract: A lens holding structure for wall-mounted surveillance camera is obtained via improving a basic structure of a conventional ceiling-mounted surveillance camera. The lens holding structure allows a lens of the wall-mounted surveillance camera to turn to any desired direction and be adjusted to any inclination, so that the surveillance camera may not only be directed toward any desired direction for surveillance, but also take an image free of deformation to facilitate effective surveillance by a security guard via a monitor connected to the camera.

Abstract: A screwdriver comprises a handle and a shank. The handle is provided at a head end with a percussion block. The shank is put through the interior of the handle such that one end of the shank is fastened with the percussion block, and that other end of the shank is extended out of other end of the handle. The shank is provided on the other end thereof with a percussion-rotation mechanism which is in turn fastened with a tip. The mechanism enables the tip to turn instantaneously at the time when the percussion block is impacted.

Abstract: An information hiding method with reduced fuzziness, which employs interleaving encoding, convolutional encoding and contrasts among neighboring pixels. Once the information is hidden, it can still be extracted without the original image from the generated image after a certain extent of fuzziness damage.

Abstract: A storage device is designed to keep retrievably the turning parts of a hand tool. The device comprises a base, and a rotating seat mounted rotatably on the base. The base is provided with a plurality of urging blocks, each having at least one inclined face. The rotating seat is provided with a series of retaining slots and insertion slots in communication with the retaining slots. The insertion slots are corresponding in location to the urging blocks. The retaining slots are used for keeping the turning parts of the hand tool. The turning parts are caused to move upward along the inclined faces of the urging blocks so as to jut out of the retaining slots at the time when the rotating seat is turned in relation to the base.

Abstract: A method of producing an invisible electronic signature insusceptible to human damages or anamorphous compression. This new electronic signature technology uses the pixel contrast, error propagation, channel coding and cross encoding techniques. Once the electronic signature is embedded, it can still be recovered and recognized even after the generated image is damaged by human errors or anamorphous compression.

Abstract: A magnetic restoring device of actuator provides a sufficient magnetic restoring force for stably holding a movable part of actuator in a neutral position. The actuator acts as an objective lens driving device in an optical pickup. A non-contact magnetic restoring mechanism is provided for causing pickup to return to a neutral position after a focusing or tracking operation. The magnetic restoring device comprises magnets, two magnetic inductive members, and two yokes wherein magnets and yokes are opposite; one arc-shaped surface is formed on the magnet in the focusing direction; and the other one is formed on the magnet in the tracking direction. The magnetic inductive members are provided between the magnets and the yokes to form a magnetic circuit, thereby increasing a magnetic field intensity and sensitivity of actuator. The device increases a magnetic restoring force in the focusing and tracking directions respectively.

Abstract: An elastic pad is formed of a protective covering, and an elastic member which is encased by the protective covering and is formed of three elastic bodies capable of expanding and springing back to their original shapes. One of the three elastic bodies is sandwiched between other two of the three elastic bodes, so as to provide the elastic pad with a good quality of elasticity.

Abstract: A shelf positioning mechanism for sectional rack constructed particularly from vertical posts having spaced horizontal annular grooves and horizontal shelves mainly includes a positioning member fitted between a short sleeve provided at each corner of the shelf and a connecting member configured to attach to the vertical post at the annular groove. The positioning member has downward and outward inclined inner wall surface that applies a clamping force on a downward and outward inclined outer wall surface of the connecting member for the latter to securely attach to the vertical post, and has a straight outer wall surface to tightly bear against a straight inner wall surface of the short sleeve for the shelf to be selectively turned upside down when it is assembled to the vertical posts.

Abstract: A process of fabricating a non-gap 3-D microstructure array mold core comprises a first step in which a buffer layer is coated on a substrate. A photomask layer is then coated of the buffer layer. A pattern is subsequently formed on the photomask by photo-lithography. The patterned photomask layer is subjected to a reflow by which a microstructure array is formed on the photomask layer. The microstructure array is coated with a metal conductive layer. The microgaps of the microstructure array are eliminated by an electrocasting layer which is coated on the microstructure array. The non-gap microstructure array mold core so fabricated is made into a metal molding tool by microinjection molding or microthermo-pressure molding.