Hydrated zinc borate, dimethyl silicone resin arc extinguishing material
First Claim
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1. AN ARC-EXTENGUISHING MATERIAL COMPRISNG A FILLER OF HYDRATED ZINC BORATE IN A DIMETHYL SILICONE RESIN, THE CARBON ATOMS IN SAID RESIN BEING NO GREATER THAN 15 PERCENT OF THE TOTAL NUMBER OF ATOMS IN SAID HYDRATED ZINC BORATE AND DIMETHYL SILICONE COMBINED.
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Abstract
Arc-extinguishing materials are selected in accordance with criteria such as first ionization potential of each of the constituents, carbon content, boiling, sublimation, or decomposition temperature, endothermic character of decomposition, electronegativity of decomposition products, rate of reformation, dimensional and chemical stability, ease of application, cost, toxicity, and coefficient of thermal conductivity.
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Citations
5 Claims
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1. AN ARC-EXTENGUISHING MATERIAL COMPRISNG A FILLER OF HYDRATED ZINC BORATE IN A DIMETHYL SILICONE RESIN, THE CARBON ATOMS IN SAID RESIN BEING NO GREATER THAN 15 PERCENT OF THE TOTAL NUMBER OF ATOMS IN SAID HYDRATED ZINC BORATE AND DIMETHYL SILICONE COMBINED.
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2. An arc-extinguishing material as claimed in claim 1 wherein the filler has the formula 2ZnO.3B2O3.3 1/2 H2O and the resin has a basic monomer represented by the structural formula
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3. An arc-extinguishing material as claimed in claim 1 wherein the filler comprises at least 40 percent by weight of the material.
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4. An arc-extinguishing material as claimed in claim 1 wherein the filler comprises at least 55 percent by weight of the material.
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5. An arc-extinguishing material as claimed in claim 1 wherein the filler comprises about 56 percent by weight of the material.
Specification
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Current AssigneeJoseph M. Khalid, Richard W. Niccolls
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Original AssigneeJoseph M. Khalid, Richard W. Niccolls
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InventorsKhalid, Joseph M., Niccolls, Richard W.
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Primary Examiner(s)Padgett, Benjamin R.
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Assistant Examiner(s)Lloyd, Josephine
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Application NumberUS05/364,597Time in Patent Office868 DaysField of Search423/279,280 106/292 260/37SB,46.5 252/63.5 200/144CUS Class Current524/405CPC Class CodesA62C 3/16 in electrical installations...H01H 33/76 wherein arc-extinguishing g...
