5194results about How to "Good workmanship" patented technology

The invention relates to an antenna structure to be installed inside small-sized radio apparatus. A conventional PIFA-type structure is extended such that on top of the ground plane (210) there will be instead of one at least two radiating planes (220, 230) on top of each other. There is between them dielectric material (240) to reduce the size of the lower radiator and to improve the band characteristics. Likewise, there is dielectric material (250) on top of the uppermost radiating plane so as to bring one resonance frequency of the antenna relatively close to another resonance frequency in order to widen the band. Advantageously the radiating planes are in galvanic contact (203) with each other. The invention accomplishes a greater increase in the antenna bandwidth as compared to that achieved by placing the only radiating plane at a distance from the ground plane equal to that of the upper radiating plane according to the invention.

The invention relates to a UV-light solidifying paint having decorative effect and preparation method thereof, in particular to a light solidifying paint containing mica coated with metallic oxides as a paint. The paint is composed of the followings in proportions: the content of low polymer is 30-70wt%; the content of reactive diluent is 25-65wt%; the content of light trigger is 0.5-10wt%; the content of pearlescent pigment is 3-30wt%; the content of accessory ingredient is 0.2-8wt%; the content of solvent is 0-50wt%. As added pearlescent pigment has strong metallic performance, the prepared light solidifying paint has the character of strong pearl effect and also has very good water resisting property, higher rigidity and abrasive resistance. The paint can be applied to decoration on the surfaces of motor vehicles, electric appliance, furniture, articles for daily use, toys, walls, leather products, etc.

A method of forming an array of floating gate memory cells, and an array formed thereby, wherein each memory cell includes an electrical conductive floating gate formed in a trench in a semiconductor substrate, and an electrical conductive control gate having a portion disposed over and insulated from the floating gate. An electrical conductive tunneling gate is disposed over and insulated from the control gate by an insulating layer to form a tri-layer structure permitting both electron and hole charges tunneling through at similar tunneling rate. Spaced apart source and drain regions are formed with the source region disposed adjacent to and insulated from a lower portion of the floating gate, and with the drain region disposed adjacent to and insulated from an upper portion of the floating gate with a channel region formed therebetween and along a sidewall of the trench.

The production process with reduced and fined type-D inclusion in high-carbon chromium bearing steel features the four-step metallurgical process including initial smelting of steel liquid in electric furnace, refining in bottom blowing Ar LF ladle furnace, deairing in VD vacuum furnace, and die casting or continuous casting. By means of the comprehensive deoxidation process including pre-deoxidation of aluminum deposition of the steel from electric furnace, deoxidation with Fe-Si powder diffusion slag in LF site and vacuum carbon deoxidation in VD site; and the new refining process including high alkalinity slag desulfurization in LF site, adoption of low alkalinity slag in the VD site and reducing free CaO inside slag, the present invention reaches the aims of reducing and fining type-D inclusion.

The invention belongs to a manufacturing technology of aluminum alloy and relates to a method for manufacturing a high-strength 7055 aluminum alloy forge piece formed by spraying. The method sequentially comprises the following steps: (a) melting components of 7055 alloy in an intermediate frequency furnace; (b) degassing, deslagging, refining and filtering an aluminum alloy fusant; (c) forming the filtered fusant by spraying to obtain a columnar aluminum alloy ingot blank; (e) carrying out hot extrusion on the aluminum alloy ingot blank formed by spraying; (f) constantly cutting the extrusion ingot as required and then carrying out free forging; (g) carrying out blocker-type forging and / or stamp forging on the blank after the free forging to obtain a stamp forging piece; and (h) carrying out T6 heat treatment on the stamp forging piece. A large-specification and high-property 7055 product can be obtained by using the method which is suitable for industrial production.

A multi-piece solid golf ball has a solid core obtained by molding and vulcanizing a rubber composition which includes (A) a base rubber containing a polybutadiene synthesized using a rare-earth catalyst, (B) an unsaturated carboxylic acid and / or a metal salt thereof, (C) an organic sulfur compound, (D) an inorganic filler and (E) an organic peroxide. The core is enclosed within a mantle of one or more layer which is made primarily of a thermoplastic resin and has a Durometer D hardness of 30 to 70. The mantle is enclosed within a cover which is made primarily of a thermoplastic polyurethane and which has a Durometer D hardness of 40 to 60 that is lower than the Durometer D hardness of the outermost layer of the mantle. This construction provides the golf ball with an outstanding rebound.

The present invention discloses a thermosetting resin composition comprising: a bifunctional or multifunctional epoxy resin, a styrene-maleic anhydride (SMA) copolymer with a styrene / maleic anhydride molar ratio of 5-12:1 as a curing agent, a BPA epoxy resin with a low or high bromine content or tetrabromobisphenol A as a flame retardant agent, an accelerator and a solvent. The cured resin composition of the invention has a very low dielectric property, improved thermal reliability and better toughness. A copper clad laminate made of the resin composition and a reinforced material such as glass fiber cloth has a very low dielectric constant and dissipation factor, high Td, better toughness and PCB manufacturability, and thus very suitable to be used as a copper clad laminate and a prepreg for manufacturing PCBs and also applied to the common use of epoxy resins, such as molding resins, and composite materials for construction, automobiles and aviation.

The invention discloses a negative electrode material for a quickly rechargeable graphite lithium-ion battery and a preparation method of the negative electrode material. The preparation method of the negative electrode material for the quickly rechargeable graphite lithium-ion battery comprises the following steps: (1) mixing a mixture containing a graphite precursor and bitumen and heating the mixture for kneading and crushing, wherein the mean grain size D50 of the graphite precursor ranges from 5 to 10 microns, and the mass ratio of the graphite precursor to the bitumen ranges from 50:50 to 90:10; (2) performing heat treatment at a temperature within the range of 300-700 DEG C under the protection of an inert gas; and (3) carrying out graphitizing. The mean grain size D50 of the negative electrode material prepared by use of the preparation method for the quickly rechargeable graphite lithium-ion battery is within the range of 5-15 microns and the specific surface area of the negative electrode material is below 2.0m2 / g; the first discharge capacity of a negative electrode, manufactured by use of the negative electrode material for the quickly rechargeable graphite lithium-ion battery, is more than 355mAh / g, and the initial charge-discharge efficiency of the battery is above 90%; if the battery is quickly charged (1.5C) for 45 minutes, the capacity of the battery can be above 80%; in short, the product is high in discharge capacity and charge / discharge efficiency, and good in rate capability. The invention also relates to a battery comprising the negative electrode material for the quickly rechargeable graphite lithium-ion battery.