ESSENCE METHOD REFINE CO., LTD. Patent applications |
Patent application number | Title | Published |
20110318137 | DRILLING FASTENER - A drilling fastener utilizes at least two sides jointed to form a shank. A corner point is formed between any two sides for outwardly extending a rib therefrom. The rib includes a cutting section extended outwardly from the corner point about an arc contour, and a arc section whose two sides respectively connect to the cutting section and the side. A cutting tip is formed at a convergence of the cutting section and the arc section and located at which the largest outer diameter of the shank is defined. An accommodating room is defined between each arc section and the side. Thereby, the auxiliary cutting provided by the cutting tip allows the debris to be swiftly extruded via the accommodating room, thence preferably decreasing the driving torque and preventing the workpiece from being damaged. The fixing efficiency after screwing is further promoted. | 12-29-2011 |
20110293387 | SCREW WITH DOUBLE NOTCHES - A screw with double notches includes a head portion, a shank portion extended outward from the head portion, a threaded section spirally surrounded on the shank portion. Wherein, a raw section on the shank portion is provided with a cambered surface formed integral with the shank portion in cross-section, and a notched section relative to the raw section has two cutting notches separately depressed into the shank portion and disposed near an end of the shank portion, thereby forming a protrudent part between the two cutting notches. By means of the cooperation of the cutting notches and the raw section, the cutting capability and the removal of debris are increased so that a fastened object is prevented from split. Thereby, the drilling speed is promoted, and the effort to rotate the screw is lessened. While the supporting strength of the screw is improved, the screw does not break easily while screwing. | 12-01-2011 |
20110229286 | VERSATILE FASTENER - The present invention pertains to a versatile fastener essentially comprising at least two flat areas formed on a cutting part, and an accommodating area disposed between any two of the flat areas. Wherein, at least two cutting faces are convergent to form the accommodating area, a first and a second cutting edges are respectively formed at a connection between each cutting face and flat area. In operation, the flat areas facilitate the first and the second cutting edges to promote a stable balance with the object, thereby allowing the debris to be swiftly guided out of the accommodating areas. Consequently, it is difficult to crack the object while imparting forces thereon so as to lower the screwing resistance and the fastening torque as well as preferably increase the combining efficiency. | 09-22-2011 |
20090028665 | HIGH SCREWING SCREW - The present invention pertains to a screw notably comprising a shank with a plurality of flat surfaces; wherein, a lip is defined by the junction of any of two adjacent flat surfaces, and a rib located between two threads is protruded from the lip. While in operation, by means of the configuration of the ribs, the screw facilitates to increase the cutting capability for achieving a higher screwing speed and preserve a good resistance of extraction. | 01-29-2009 |