35 results about "Sterling silver" patented technology

The present invention is related to a novel sterling silver compound for use in vermeil jewelry and other articles of manufacture. The compound includes an alloy composed of at least 92.5% by weight of silver, up to 7.5% by weight of gold, and the remainder in copper. The invention further relates to an article of jewelry including at least 92.5% by weight of silver, up to 7.5% by weight of gold, and the remainder in copper. The invention also relates to a method for making an article. The method includes providing a vessel and adding 3.75% by weight of gold, 94.0% by weight of silver, and 2.25% by weight of copper to the vessel. The method also includes melting the metals and mixing them until a homogenous mixture is formed. The method further includes pouring the homogenous mixture into a mold to form a semi-finished article and plating the semi-finished article with 18K rose gold.

An electro-surgical forceps has a pair of tines. At least one of the tines has an inner core of a metal such as stainless steel, nickel, titanium, aluminum, or alloys such as sterling silver, and an outer plating of copper or a copper alloy having a thermal conductivity and an electrical conductivity greater than the core material. The outer plating covers all or substantially all of the tine. The outer plating is suitably formed by an electroplating process.

Titanium sterling silver alloy compositions that exhibit enhanced tarnish resistance while maintaining an acceptable hardness. Applications and manufacturing methods thereof are disclosed.

Fire-scale resistant, work-hardenable-jewelry, silver-alloy compositions having desirable properties of reduced fire scale, reduced porosity, oxide formation and reduced grain size relative to traditional sterling silver alloys while providing improved work hardening performance. These compositions contain at least 86% by weight silver, 0-5-7.5% by weight copper, 0.07-6% by weight of a mixture of zinc an silicon with silicon being present in an amount from about 0.02 to about 2.0% by weight, and from about 0.01 to no more than 2.0% by weight germanium.

A silver-platinum alloy formulated to provide improved tarnish resistance and hardness as compared to sterling silver. The alloy can be incorporated in various jewelry, flatware, and like articles. The alloy generally includes silver and platinum, with silver being the predominant component. In certain applications, the alloy includes about 90-95.5% silver and about 0.5-6% platinum. A small amount of gallium can also be added to the composition to provide ease of manufacture of the alloy. The resulting alloy has the favorable properties afforded by sterling silver, but also has brighter surface finish, greater tarnish resistance and increased hardness as compared to traditional sterling silver.

The invention relates to a silver ornament alloy, particularly relates to the silver ornament alloy taking silver as a main component, and belongs to the technical field of non-ferrous metal. The silver ornament alloy taking silver as the main component is prepared by taking the following components by weight part: 93-95 parts of silver, 2-4 parts of copper, 1-3 parts of titanium and 1-3 parts of chromium, wherein the purities of all the components are 99.9%-99.99%. The silver ornament alloy is prepared according to the following steps of: weighting the raw materials by weight part of all components; placing the components into a vacuum furnace in turn; melting in a vacuum electric arc furnace with the vacuum degree at 0-5Pa and the temperature at 1860-1890 DEG C; keeping the temperature for 1 hour, and then uniformly stirring; pouring and placing into a mould; and cooling at a speed of 30-45 min. A detection result shows that the silver ornament alloy taking silver as the main component has the advantages that the silver ornament alloy is brighter (whiter) than the s925 international sterling silver, the silver ornament alloy is characterized by anti-oxidation and corrosion resistance and is harder, the hardness is 4.5-5.2, and the silver ornament alloy is more durable and attractive and has a better health-care function for the human body.

The invention discloses a dynamic heat flow sensor integrating thermoelectric potential effect, which comprises a T-shaped encapsulation outer shell, a nichrome heat transmission body, a corundum tube, an end-exposed single core nickel-silicon alloy wire, and a sterling silver plunger; a T-shaped tail heat sink body is connected on the T-shaped encapsulation outer shell; a containing through cavity is arranged in each of the T-shaped encapsulation outer shell and the T-shaped tail heat sink body; the nichrome heat transmission body is located in the containing through cavity; one end of the nichrome heat transmission body is connected with a phlogopite insulation sleeve; a containing through hole is arranged in the nichrome heat transmission body; the corundum tube is fixed in the containing through hole; the end-exposed single core nickel-silicon alloy wire is fixed in the corundum tube; the end face of the end-exposed single core nickel-silicon alloy wire is leveled with the front end face of the nichrome heat transmission body; and, the sterling silver plunger is located at the outlet position of the containing through hole and connected with the head of the end-exposed single core nickel-silicon alloy wire. The dynamic heat flow sensor integrating thermoelectric potential effect is simple in processing and assembling technology, low in production cost and easy in quality control, and is advantaged in improving the thermal response speed of the sensor and the test precision and prolonging the effective test time.

The invention discloses a high-damping Ag-Li-Sn silver-lithium alloy with electrical conductivity close to that of pure silver. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑3.4wt.%, Sn:2.6‑3.8wt.%, Be:0.2‑0.5wt.%, Hf:0.1‑0.3wt.%, Sr:0.5‑ 0.8wt.%, Ge: 0.2‑0.4wt.%, In: 0.1‑0.3wt.%, Ta: 0.1‑0.3wt.%, Gd: 0.2‑0.3wt.%, B: 0.2‑0.4wt.%, The balance is silver. Compared with traditional electrical contact silver alloys, the material has excellent mechanical properties, high electrical conductivity and excellent damping properties.

The present invention relates to silver solder or brazing alloys and to their use in making soldered joints in various grades of silver, particularly silversmithing grades. They alloys are of the Ag-Cu-Zn family containing at least 55 wt % Ag and from 0.5 to 3 wt % Ge. Additional alloys are silver solders or brazing alloys of the Ag-Cu-Zn family containing more than 70 wt % Ag and from 0.5 to 3 wt % Ge. They can exhibit an advantageous combination of colour, flowability and corrosion resistance. A method is also provided of making a joint in Sterling silver which includes using a silver solder or brazing alloy of the Ag-Cu-Zn family containing 10-30 wt % Cu, 8-15 wt % Zn, from 0.5-3 wt % Ge, optionally 0.05-0.4 wt % Si, optionally 1-3 wt % Sn, optionally 1 ppm-0.3 wt % B, the balance being 55-77 wt %, Ag, said solder being a colour match for said Sterling silver.

The Pocket Square Jeweled Cap And Base is an article of jewelry comprised substantially of a thin cap made of or plated with semi precious or precious metal, enamel, wood, crystal, sterling silver stained glass, gold, platinum, ebony, pearls or ceramic. Inside the metal cap is substantially a metal male protruding nub snap component. Affixed to the caps are substantially semi precious or precious stones, optional small time piece, enamel, wood, crystal, sterling silver, stained glass, gold, platinum, ebony or ceramic. Inserted into and snapped to the bottom opening of the decorated cap is a thin, brittle, flexible, elongated rectangular, pocketed or un pocketed triple stitched base component. Affixed to the upper base component is a male metal protruding nub snap which is then attached, snapped to the inside of the caps metal female snap receptacle creating a single ornament. The ornament is inserted into a coat outer breast pocket exposing one third to one fourth of the upper decorated metal cap above the top edge of the pocket.

The invention relates to a purple gold Jian ware with silver pekoe. Specifically, the invention provides a preparation process of a purple gold Jian ware with silver pekoe. The process comprises the following steps: glazing a green body, and roasting the glazed green body to obtain the purple gold, silver and millipekoe Jian ware. The glaze surface of the purple gold Jian ware with silver pekoe is densely covered with silver pekoe lines which are moist, dense, clear and uniform, are as beautiful as jade, present a strong layering sense and belong to top-level pekoe lines; beautiful and glittering purple gold stripes are arranged among the silver pekoe lines, and the purple gold stripes are spread like broken gold, rich in color and prominent in embossment sense; and the glaze surface is glittering, beautiful and unsophisticated in the sun, presents good texture and prominent three-dimensional sensation, and thus has graceful appearance and high artistic and collection value.