Abstract:
PROBLEM TO BE SOLVED: To provide a physical properties required for a high-temperature lamp operation and suitable for a tungsten-halogen lamp, and to increase a correlation color temperature(CCT) to 3,200 deg.C. SOLUTION: This glass for an envelope, a glass filter lens and a glass filter, for a tungsten-halogen lamp substantially consists of 50-62% SiO2, 10-17% Al2O3, 0-6% B2O3, 3.6-10% CaO, 0-7.5%; MgO, 0.1-0.3% SrO, 2.4-18% BaO, 0-1% ZnO and 1-8% Nd2O3.
Abstract:
A battery assembly comprising a separator, spaced metal/metal oxide electrodes and a liquid electrolyte, the improvement comprising a rigid, porous, ceramic separator that is wettable by the liquid electrolyte, that has a porosity of 40-90 volume %, an average pore size in the range of 0.1-25 microns, a thickness of 1-12 mm, and a weight loss of not more than about 5% when exposed to H2SO4 having a specific gravity of 1.28 for 72 hours at 70.degree.C.
Abstract:
Glasses that can be chemically strengthened and are colored by transition metals. Most of the glasses are black, with some having high damage resistance and compressive surface layers having high compressive stress and depth of layer after ion exchange. These colored glasses do not require a post-forming heat treatment to produce color and are formable by fusions drawing, rolling, slot drawing, and float glass processes.
Abstract:
The present invention is directed at a family of glasses capable of absorbing UV radiation and filtering yellow light in the visible region of the spectrum, the family of glasses having a composition consisting essentially, in terms of weight percent on the oxide basis, of: 55-95.7% SiO2, 0-28% B2O3, 0.5-18% Al2O3, 0-4% SrO, 0-13% BaO, 0-13% CaO, 0-8% MgO, 0-7.5% Na2O, 0-9.5% K2O, 0-1.5% Li2O, 0-1.5% Sb2O3, 0.4-4.5% Nd2O3, and 0.1-1% CeO2. Glasses of the present invention are capable of employment as envelopes for tungsten-halogen lamps and other high temperature light sources, as well as sealed-beam incandescent headlights.
Abstract:
Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit beta-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-17 Al2O3; 5-13 Li3O; 0-4 ZnO; 0-8 MgO; 2-5 TiO2; 0-4 B2O3; 0-5 Na2O; 0-4 K2O; 0-2 ZrO2; 0-7 P2O5; 0-0.3 Fe2O3; 0-2 MnOx; and 0.05-0.2 SnO2. Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2 O + Na 2 O + K 2 O + MgO + ZnO _ ] [ Al 2 O 3 + B 2 O 3 ] between 0.7 to 1.5; b. a ratio: [ TiO 2 + SnO 2 _ ] [ SiO 2 + B 2 O 3 ] greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity >=about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance included of a* between -3 and +3, b* between -6 and +6, and L* between 88 and 97.
Abstract:
A glass for tungsten halogen lamp glass envelopes, glass filter lenses, and glass filters consisting essentially in terms of weight percent on the oxide basis, of 50-62% SiO 2 , 10-17% Al 2 O 3 , 0-6% B 2 O 3 , 3.6-10% CaO, 0-7.5% MgO, 0.1-0.3% SrO, 2.4-18% BaO, 0-1% ZnO, 1-8% Nd 2 O 3 . The glass exhibits the following physical properties: strain point between about 665°C to about 750°C, coefficient of thermal expansion to the set point of between about 49-59x10 -7 /°C, liquidus temperature below 1320°C, viscosity at liquidus temperature greater than 2,000 poises, and transmission at 585 nm of between 5-60 % for a 1.2 mm thickness. The lamp color temperature for a tungsten halogen lamp containing a glass envelope, a glass filter lens, or a glass filter prepared from the glass composition is increased from about 3 to 7% above a similar glass with no Nd 2 O 3 , and the total visible lumen loss is limited to less than about 10%.
Abstract:
A glass for tungsten halogen lamp glass envelopes, glass filter lenses, and glass filters consisting essentially in terms of weight percent on the oxide basis, of 50-62% SiO 2 , 10-17% Al 2 O 3 , 0-6% B 2 O 3 , 3.6-10% CaO, 0-7.5% MgO, 0.1-0.3% SrO, 2.4-18% BaO, 0-1% ZnO, 1-8% Nd 2 O 3 . The glass exhibits the following physical properties: strain point between about 665°C to about 750°C, coefficient of thermal expansion to the set point of between about 49-59x10 -7 /°C, liquidus temperature below 1320°C, viscosity at liquidus temperature greater than 2,000 poises, and transmission at 585 nm of between 5-60 % for a 1.2 mm thickness. The lamp color temperature for a tungsten halogen lamp containing a glass envelope, a glass filter lens, or a glass filter prepared from the glass composition is increased from about 3 to 7% above a similar glass with no Nd 2 O 3 , and the total visible lumen loss is limited to less than about 10%.
Abstract:
The present invention is directed at a family of glasses capable of absorbing UV radiation and filtering yellow light in the visible region of the spectrum, the family of glasses having a composition consisting essentially, in terms of weight percent on the oxide basis, of: 55-95.7% SiO2, 0-28% B2O3, 0.5-18% Al2O3, 0-4% SrO, 0-13% BaO, 0-13% CaO, 0-8% MgO, 0-7.5% Na2O, 0-9.5% K2O, 0-1.5% Li2O, 0-1.5% Sb2O3, 0.4-4.5% Nd2O3, and 0.1-1% CeO2. Glasses of the present invention are capable of employment as envelopes for tungsten-halogen lamps and other high temperature light sources, as well as sealed-beam incandescent headlights.
Abstract:
A battery construction and a method of producing the construction. The construction comprises a ceramic separator having a honeycomb structure in which cells run lengthwise of the honeycomb and are separated by porous walls, and internal positive and negative electrodes positioned in part at least within the honeycomb structure.
Abstract:
An elongated, rigid, porous, ceramic separator for a rechargeable battery assembly, the separator having a honeycomb structure in which open cells are separated from adjacent cells by thin, porous, ceramic walls, the open cells and separating walls running lengthwise of the honeycomb, the cell walls being porous and the open cells and wall pores being adapted to be filled with an electrolyte to permit ion flow between electrodes in a battery.