Abstract:
An apparatus for preventing vacuum compression of a scroll compressor comprising: a suction tube and a discharge tube each combined to one side of a closed container filled with oil to an adequate height; a fixing scroll having a wrap and a coolant inlet and an outlet; a high and low pressure separating plate installed at the upper side of the fixing scroll, dividing the inside of the closed container into a high pressure chamber and a low pressure chamber, the high and low pressure separating plate having a gas discharge hole at its central portion; an orbiting scroll having a plurality of compressive chambers for compressing a sucked coolant by being rotably engaged with the wrap of the fixing scroll at the lower side of the fixing scroll, and having a wrap for rendering each compressive chamber to have different pressure to be successively moved as being turned; and a high vacuum preventing unit installed at the inner side of the body of the fixing scroll.
Abstract:
The present invention relates to a coloring resin composition exhibiting pleochroism comprising 100 parts by weight of a transparent thermoplastic resin (A); 0.01 to 0.03 parts by weight of a dye for coloring a resin (B) which is one selected from the group consisting of an azo-based dye (b1), an anthraquinone-based dye (b2), and a methine dye (b3); and 0.1 to 0.3 parts by weight of a functional black dye (C) obtained by mixing an anthraquinone-based dye (c1) and a perinone-based dye (c2). A resin molded article manufactured by the coloring resin composition exhibiting pleochroism of the present invention is characterized by exhibiting different colors of light according to thicknesses although the resin molded article is irradiated with light sources in a single wavelength.
Abstract:
The present disclosure is directed to a dual technology relief tap, and more specifically, to a relief tap where a segment on the threaded portion has a first type of relief and the remainder of the threads have a second type of relief or a concentric thread to limit tilt and loosening and ultimately to prevent overfeed or underfeed. In some embodiments, a neutral, negative, positive, convex, or other type of relief is applied generally to most of the threaded portion with or without concentric threads, and a second type of relief of any type, such as a neutral, a negative, a positive, a convex, or other relief, is applied to some selected threads. In another embodiment, the second type of relief is applied to the first threads after the chamfer or are spaced regularly over the threaded surface.
Abstract:
Provided are a cyber shopping mall management apparatus, and a system and method for managing a cyber shopping mall using the apparatus that can reduce a return rate of a purchased wear item. The cyber shopping mall management method includes adjusting a size of an image of a wear item to be purchased to fit a size of an image of an object to wear the wear item, synthesizing the adjusted wear item image onto the object image, and transmitting the synthesized image to a buyer. Thus, the cyber shopping mall management system and method enable a buyer to indirectly examine whether a wear item to be purchased can fit an object through an image of the object wearing the desired wear item, thus reducing a return rate of purchased wear items.
Abstract:
The present invention relates to a coloring resin composition exhibiting pleochroism comprising 100 parts by weight of a transparent thermoplastic resin (A); 0.01 to 0.03 parts by weight of a dye for coloring a resin (B) which is one selected from the group consisting of an azo-based dye (b1), an anthraquinone-based dye (b2), and a methine dye (b3); and 0.1 to 0.3 parts by weight of a functional black dye (C) obtained by mixing an anthraquinone-based dye (c1) and a perinone-based dye (c2). A resin molded article manufactured by the coloring resin composition exhibiting pleochroism of the present invention is characterized by exhibiting different colors of light according to thicknesses although the resin molded article is irradiated with light sources in a single wavelength.
Abstract:
A spherical cutting tool such as a ball end mill, a tapered ball end mill and the like is disclosed, in which cutting edges are formed on a spherical surface. The tangential lines of the respective points of the cutting edges on a spherical surface are made to have a constant (helix) angle relative to the axis of the tool. A tooth can be formed with an eccentric relief, and the tooth reinforced with a smaller relief angle and a wider land width. Therefore, the tool can be operated at a higher feed rate, thereby making it possible to improve the machining efficiency.