Abstract: The present invention discloses a dual color molding apparatus for a measuring tape and its molding method, and a dual color plastic technology is used to replace the existing label and decoration such as a label on the measuring tape and provide a different design of words, numbers or logos on a concave and convex surface to facilitate users to identify the molding apparatus. The molding apparatus includes a male mold fixing base, a first male mold, a second male mold, a female mold fixing base, a first female mold, a second female mold, a central axle and a middle plate. The first female mold forms a first cavity with any one of the male molds, and the second female mold forms a second cavity with any one of the male molds, and a glue injection is performed in the first cavity and the second cavity by a first glue injection unit and a second glue injection unit respectively.

Abstract: A two-color ruler blade utilized in a tape rule, the ruler blade fabricated of thin sheet steel that is cross-sectionally concave and radiused having a first color layer applied to the upper edge surface and a second color layer applied to the bottom edge surface. Tape rule graduations and numeric symbols are printed on the first color layer already applied to the upper edge surface of the ruler blade. As such, the first color layer and second color layer are each of a different color, resulting in a two-color steel tape rule, ruler blade.

Abstract: An art design knife structure that includes a case, the case including a left case half and a right case half that are assembled together, a blade frame capable of sliding back and forth disposed within the interior section of the case, and a push button sleeved onto the upper edge at the tail end of the blade frame. The push button projects through a slot hole in the case and, furthermore, the push button consists of two perpendicularly and individually disposed L-shaped push blocks, while the push button is capable of rotating 90 degrees. As such, when cutting objects from the left or the right, the angle and orientation is selectable by an optimal push button direction, the structure of present invention thereby increasing art design knife utility and, furthermore, enhancing their industrial practical value.

Abstract: An art design knife that provides for enhanced manual gripping stability and safety comprised of a front cover, a rear cover, a hatch, a magazine feed spring, a blade transport component, and a blade magazine. In addition to blade replacement convenience, the blade magazine contains a quantity of spare blades to thereby increase art design knife utility and, furthermore, enhance the industrial practical value of art design knife structures.

Abstract: An art design knife that provides for enhanced manual gripping stability and safety comprised of a front cover, a rear cover, a hatch, a magazine feed spring, a blade transport component, and a blade magazine. In addition to blade replacement convenience, the blade magazine contains a quantity of spare blades to thereby increase art design knife utility and, furthermore, enhance the industrial practical value of art design knife structures.

Abstract: An improved tape rule blade that provides a cross-sectionally concavo-convex tape rule blade having a plurality of gradually varying sections of radii and angles of curvature to effectively increase the total extended length of the tape rule blade and thereby maximize single operator, fully drawn tape rule measurement span. As such, the tape rule blade structure of the present invention enhances tape rule utility and, furthermore, offers additional industrial practical value.

Abstract: A utility cutter includes right and left covers that are screwed together to receive a blade braking gear and a spare blade cartridge therein. The blade braking gear includes a blade holder for holding a blade thereto, and a slide button and a blade-replacing key movably connected to the blade holder. When the slide button is depressed and slid forward, the blade-replacing key and the blade holder are moved forward to extend the blade; when the slide button is depressed and slid backward, the blade is retracted into the covers; and when the blade-replacing key is depressed when the blade is extended, the blade could be removed from the cutter and replaced with a new one. The spare blade cartridge stores multiple spare blades therein. By pushing a front cover of the cartridge forward, a spare blade is pushed out of the cartridge for replacing an old blade.

Abstract: The invention relates to the improved structure for an ink cup, particularly such structure having upper and lower cover bodies, a thread winding wheel, a manual turning wheel and an inverted T-shaped pressing disk. The interior of the inverted T pressing disk encloses a compression spring and is set inside the manual turning wheel by means of a hollow circular rod. The manual turning wheel cooperates with a circular hole in the upper cover body, and is urged into contact with the upper cover body by the compression spring in the pressing disk. A spiral spring in the thread winding wheel automatically rewinds the thread except when the manual turning wheel is squeezed against the cover body to stop the thread winding wheel.