Abstract: An improved bolt/nut structure capable of preventing from dead locking and loosening and being vibration resistive, wherein, an internal threaded lining and an external threaded sleeve are made from helix springs with the cross section of each ring thereof in the shape of “]” and are used as an external thread and an internal thread for the bolt and the nut respectively to provide the function of dead locking and loosening and of vibration resisting. A plurality of expansion slits are provided on the internal and external peripheries of the helix springs, the springs with the expansion slits are suitable for use on the surface with collapsing of screw threads to suitably expand, and to confine the screw threads respectively. Moreover, a single or a plurality of helix springs are provided to form the internal threaded lining or the external threaded sleeve of one of various pitch gauges, thereby, the bolt structure has the capability of changing for the coarse and fine threads.

Abstract: An improved bolt/nut structure capable of preventing from dead locking and loosening and being vibration resistive, wherein, an internal threaded lining and an external threaded sleeve are made from helix springs with the cross section of each ring thereof in the shape of “]” and are used as an external thread and an internal thread for the bolt and the nut respectively to provide the function of dead locking and loosening and of vibration resisting. A plurality of expansion slits are provided on the internal and external peripheries of the helix springs, the springs with the expansion slits are suitable for use on the surface with collapsing of screw threads to suitably expand, and to confine the screw threads respectively. Moreover, a single or a plurality of helix springs are provided to form the internal threaded lining or the external threaded sleeve of one of various pitch gauges, thereby, the bolt structure has the capability of changing for the coarse and fine threads.

Abstract: A reusable ball unit able to be repeatedly modeled in three dimensions, which include magnetic beads fully filled in a ball bag with excellent expansion and contracting ability. Wherein, the magnetic beads have suitable magnetic attraction, thereby, when they are pressed, hit or squeezed by hands to move, the magnetic beads in the ball bags can attract on another to endue the ball units with a contour. The ball units can be modeled repeatedly and stacked in taking advantage of magnetic attraction thereof; so that they can be used for modeling inventive three dimensional articles.

Abstract: A method for producing a sponge like metallic structure of which density of pores is controllable, organic blanks are selected according to the shapes and sizes of the pores to be shaped and are dipped with organic medium, the blanks are agglomerated in a step of accumulation and are baked for shaping, the blanks and the organic medium thus form a shaped embryo by adhering. The embryo is processed by dipping with refractory mortar in vacuum, and is dried to form a refractory layer, then is dealt with by sintering in high temperature to effect carbonizing and disappearance of the blanks and organic medium by burning, and forms shaped ceramic shells distributed with mutually communicating pores and communicating areas and with gaps around the pores and communicating areas.

Abstract: A nail file formed by providing an inner helical spring and an outer helical spring in a cover set; wherein, the outer helical spring is slipped over the inner helical spring to form an elastic inner filing member with an elastic toothed surface of multiple layers and bent to form a shape of an arciform new moon. The cover set is made of elastoplastics and includes an upper cover and a lower cover both in the shape of an arciform new moon. A user can press the cover set and the elastic inner filing member therein for elastic stretching and retracting the gaps in the elastic toothed surface of the elastic inner filing member, and can adjust the spaces of the gaps by screwing or unscrewing of a screw to suit filing of nails of various thickness at the positions of the outer and inner sharp edges to get rid of rough edges on the nails. Thereby efficiency, convenience and smoothness of nail filing can be largely increased.

Abstract: A structure of grinding medium controllable in shape and specific gravity and comprising a housing, a cover, a spring and a core member is disclosed. The housing includes a head and a stem having a central cavity. The spring is fitted over the stem to form cutting blades for grinding/cutting. The spring can be formed into the shape wherein the thread on one side is close while on the other side is open, and the sectional shape of the spring can be various; hence the medium structure can have ideal blade contours in favor of grinding efficiency. The cover engages the cavity of the stem to form a sealed receiving chamber for positioning the spring, and the receiving chamber with a given volume formed between the cavity and the cover receives a core member or keeps empty. Therefore, specific gravity of the structure is under control and approach that of grinding liquid.

Abstract: An ornamental pendant structure able to make up patterns in a DIY mode, wherein, a magnetic pad is provided on a pendant, and a plurality of picture blocks are attracted by the magnetic pad of the pendant to form the ornamental pendant structure. In the structure, the picture blocks are modularized metallic platelets capable of being attracted by the magnetic pad and capable of forming a plurality of patterns. This gives the advantage of changing into desired patterns on the ornamental pendant in a DIY mode, and the ornamental pendant can have elevated practical value in variant and brilliant ornamental effects.

Abstract: The improved ornamental pendant structure comprises at least some ornamental pieces in an annular housing; wherein, the ornamental pieces are each provided on the periphery thereof with a curved end portion. The housing has on two sides thereof a stop portion and an holding tight portion respectively to receive therebetween the ornamental pieces with a decoration surface thereof revealed but changeable. By pressing rear ones of the ornamental pieces in the housing to push forward the front ones of the pieces to have the latter gotten off the housing, the rear ornamental pieces can all appear their decoration surfaces one by one as a decoration surface of the ornamental pendent. The structure thereby can have a brand-new function of changing its decoration surface; the front ornamental pieces can be stored for use afterwards when they are once more assembled behind the rear ornamental pieces.

Abstract: A cold forging forming method for forming a three-dimensional hollow article without rough edges, wherein, an alloy of low melting point is used instead of mercury as a filler with plasticity. When the alloy of low melting point is heated and molten, it can be poured, discharged and recollected at normal temperatures but can have good stiffness after being solidified, thereby, the solidified alloy of low melting point can support a seamless die cavity against forging pressure, thereby, a stiff wall of the seamless die cavity is formed. A shaped work piece in the die cavity can be released when the solidified alloy is heated to melt, and an inner die for a different die cavity can be substituted for the old one, and an effect of recovery for reusing the filler can be achieved, and cost of forming can be reduced. All these meet the requirement of environment protection.

Abstract: A convenient force saving pincer comprising at least a handle unit, a spring leaf, a clamping unit and two pivotal connecting units, wherein, the handle unit is formed from a spring leaf in a wave form with two ends thereof connected with the front ends of two grasping stems; the clamping unit is formed by pivotal connecting pivot ends of the two clamping stems provided pivotally each with a clamping sheet; the two pivotal connecting units are composed each of a receiving sleeve which pivotally connect with a slide sleeve. The receiving and the slide sleeves can be freely adjusted for positioning on the clamping stems and the grasping stems respectively.

Abstract: An easy mode pipe-diameter reducing device provided for feeding a metallic pipe into the hole confined by the wall surfaces of a conical spring mounted in the die bodies of the device, wherein, wall sections of the die bodies with constant diameter guides the metallic. pipe, and wall sections of the die bodies with tapering shapes contract the wall of the metallic pipe. Thereby, the peripheral pipe wall is gradually contracted under confining of the tapering wall surfaces of the die bodies. Wherein, the pipe-diameter reducing device is comprised of an upper die body and a lower die body having a conical spring provided therebetween, the inner diameter of the conical spring forms the wall surfaces extending from the wall sections with constant diameter to the tapered wall sections thereof. Therefore, when the metallic pipe is fed till it contacts the tapered wall sections, it can be contracted thereby into the shape of a tapered pipe. Hence easiness of pipe reducing can be achieved.

Abstract: The present invention is related to a toothpick convenient for carrying and improved in picking, and is especially directed to a toothpick and a flat receiving sheet for packing. The toothpick is comprised of a picking portion and a shank. Wherein, the picking portion is made of a flexible line; the line is bent to form a tip, two bending portions and an embedded portion. By the flexibility or recoverability from bending provided on the flexible line and by the nature of springs of the two bending portions, the picking portion meets the curvature of the surfaces of teeth and can effectively twisting scrape to clean the walls of teeth easily; the toothpick thereby has the strong effect of clearing off residual food. And a plurality of toothpicks can be provided on the tailing end of the shank of each toothpick with a tearing portion and are arranged and received in a flat receiving sheet to be torn off when a toothpick is needed. Thereby, portability and convenience of use of the toothpicks can be increased.

Abstract: An improved recoverable and reusable die used for cold forging utilizing a medium of penetration made of an alloy with a low melting point. The alloy is a mixture of the elements Bi, Pb, and Sn. The alloy is poured into the basic die structure, and is solidified at a normal temperature to be a medium of solidifying for the basic die structure. Since the alloy with a low melting point is molten at a low temperature, all the members in the basic die structure are recoverable for reusing. Thus the shapes of the die cavities of the workpieces to be forged can be repeatedly changed and the cost of production of cold forging dies is lowered.

Abstract: A magnetic drawing board for color drawing used for children, it is comprised mainly of an encircled seat in the shape of a plate, plural set of iron powder of various colors and coarseness, a scraping plate and a magnetic pen. Wherein the nib of the magnetic pen can be changed with any of various shapes of nibs, the nib has therein a magnetic seat capable of changing orientations, attraction and repellent of magnetic poles thereon. The encircled seat is provided therein with a magnetic pad, magnetic force of the magnetic pad is smaller than that of the nib. The scraping plate is provided in the encircled seat which is provided at one edge thereof with a plurality of powder grooves, and a movable stop plate is pivotably provided above the powder grooves. And iron powder with various colors and coarseness is received in the powder grooves respectively.

Abstract: A method for producing metal with a porous sponge structure of which the shapes and sizes of the pores are controllable, including steps of selecting organic blanks according to the shapes and sizes of the pores to be shaped, selecting fractory mortar according to whether the sponge like metal to be made is an alloy of high melting point or of low melting point, and steps of dipping with mortar and drying of the organic blanks to have the blanks covered with refractory layers, sintering which carbonize and burn up the organic blanks in the refractory layers forms hollow ceramic balls (with granules of various desired sizes and shapes) which are graded and mixed according to the sponge structure to be arranged, accumulating the balls in a low pressure casting equipment for preheating and founding, thereby the hollow ceramic balls are agglomerated to form the porous sponge like structure which has a single or compound nature under control of low specific weight, compression strength, high toughness and the char

Abstract: A super-low temperature plastic powder manufacturing method for continuous production of thermo-plastic powder with granule sizes smaller than 10 microns. The method includes the steps of material melting wherein coarse granular thermo-plastic material is melted to form a plastic solution, high air pressure blowing for separation wherein high pressure air is injected to impact the plastic solution to cool and harden it gradually into micro-granules and to thereby reduce its adhesive strength, super-low temperature liquid nitrogen impacting for brittling wherein super low temperature liquid nitrogen is used to reduce the temperature of the plastic micro-granules, and low temperature calendaring. The reduced temperature greatly reduces elongation, impact strength, and fracture resistance of the plastic micro-granules for easier processing.

Abstract: A die-protecting device used in bending an embossed metallic straight pipe with a small diameter and a thin wall is disclosed. Whereof a die core is placed in the straight embossed pipe to support and help the wall of the embossed pipe to bear bending force being scattered thereby and almost equally distributed to the whole wall and to get desired bending curvature. A pair of half-dies are put on and envelop the external wall surface of the embossed pipe to protect the embossed pipe. A flexible plastic pipe is slipped over the half-dies to protect the half-dies from loosening. A spiral spring is slipped over the plastic pipe, and a tension spring is slipped over the spiral spring. So that the bending force exerted on the half-dies, the embossed pipe and the plastic pipe can be more uniformly distributed, and the embossed pipe can be bent to et desired curvature.

Abstract: A method for forming artistic forked pipes made of aluminum or copper alloy, including the steps of selecting of extruded material, milling for making an extruded pipe, enlarging the bore of a main pipe, and forming to form forked branch pipes. Wherein, an extruded material selected is provided with a plurality of through holes and protruding columns. The through holes are formed to have a main pipe on one end and a plurality of branch pipes on the other end thereof. The material of the protruding columns are milled to distribute on protruding portions on the main pipe, and on protruding portions on the branch pipes for making an extruded pipe. A die core with the corresponding shape of the main pipe has to be fitted in the main pipe hole of the extruded pipe to facilitate operation of exerting pressure onto the protruding portions of the main pipe to enlarge the bore of the main pipe into a desired form.

Abstract: An integrate forming method for a front aluminum alloy fork of a bicycle, wherein, an aluminum alloy found round pipe having two elliptical pipe holes therein is selected as a blank and is formed an embryonic form of a pipe casting of the pipe head of the front fork by a milling process, then die cores are placed in the pipe casting then by using a sequential novel process including diameter reducing and tapering of the pipe head, a first stage forming, tapering of the branch pipes, a second stage forming, and bending forging etc., the front aluminum alloy fork can be integrately formed, in this way, the pipe head and the two branch pipes having extremely large variation of shape can be integrately formed, and the disadvantage of stress concentration in the conventional connecting and fixing technique can be gotten rid of, and good appearance as well as strength of the front fork can be improved by such a process.

Abstract: A three-dimensional simple flexible mould for bending pipes comprised of a plurality of arciform or half-circled spring elements, pins and chucking rings for being a protecting mould in a three-dimensional pipe bending process. The two ends of every spring element have two lapping portions with a hole both or respectively with a hole and a snap mouth or with a snap mouth both for receiving two pins therein. The spring elements are strung with pins to form a spiral spring typed flexible mould. Thereby, a straight pipe to be bent can be placed for being processed by a three-dimensional pipe bending process with a pipe bending machine. The spring elements can scatter the stress in bending. Thus can increase the bending strength of the pipe under bending moment. The bending process and detachment of the mould are simple and can improve the technique of processing in making artistic pipes.