Extinguishing medium for quenching electric arcs scope
First Claim
1. A method of quenching electrical arcs in an electrical apparatus comprising fuse elements by applying to said fine element an electric arc extinguishing medium in pasty to solid form, consisting of a silicone polymer or a mixture of silicone polymers and at least one mineral filler, wherein(i) said silicone polymer or the mixture of the silicone polymers optionally is a curable polysiloxane or a curable polysiloxane mixture, and (ii) at least one of said at least one mineral filler has an average grain size in the range of from 500 nm to 500 μ
- m and is selected from the group consisting of natural purified sands;
silicon oxide;
aluminum oxide;
titanium oxide;
silicates;
mineral carbonates;
geopolymers;
glasses, mica, ceramic particles;
boric acid, metal hydroxides;
mineral substances that contain water of hydration;
MgCO3;
Mg(OH)2; and
MgO.
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Accused Products
Abstract
Extinguishing medium in pasty to solid form for quenching electric arcs, consisting of a silicone polymer or a mixture of such silicone polymers, with the silicone polymer or the mixture of silicone polymers containing a mineral compound or a mixture of such compounds in powder form as a filler; use of the extinguishing medium to quench electric arcs in overcurrent-protection elements, in electronics and microelectronics; in high-voltage engineering; or in repeating fuses, and electrical devices, machines and systems which contain an extinguishing medium according to the invention.
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Citations
24 Claims
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1. A method of quenching electrical arcs in an electrical apparatus comprising fuse elements by applying to said fine element an electric arc extinguishing medium in pasty to solid form, consisting of a silicone polymer or a mixture of silicone polymers and at least one mineral filler, wherein
(i) said silicone polymer or the mixture of the silicone polymers optionally is a curable polysiloxane or a curable polysiloxane mixture, and (ii) at least one of said at least one mineral filler has an average grain size in the range of from 500 nm to 500 μ - m and is selected from the group consisting of natural purified sands;
silicon oxide;
aluminum oxide;
titanium oxide;
silicates;
mineral carbonates;
geopolymers;
glasses, mica, ceramic particles;
boric acid, metal hydroxides;
mineral substances that contain water of hydration;
MgCO3;
Mg(OH)2; and
MgO. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- m and is selected from the group consisting of natural purified sands;
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22. An electrical apparatus comprising;
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at least one fuse element; and
an electric arc extinguishing medium applied to the at least one fuse element;
wherein the electric arc extinguishing medium is in pasty to solid form and consists of a silicone polymer or a mixture of silicone polymers and at least one mineral filler, (i) said silicone polymer or the mixture of the silicone polymers optionally is a curable polysiloxane or a curable polysiloxane mixture, and (ii) at least one of said at least one mineral filler has an average grain size in the range of from 500 nm to 500 μ
m and is selected from the group consisting of natural purified sands;
silicon oxide;
aluminum oxide;
titanium oxide;
silicates;
mineral carbonates;
geopolymers;
glasses, mica, ceramic particles;
boric acid, metal hydroxides;
mineral substances that contain water of hydration;
MgCO3;
Mg(OH)2; and
MgO.- View Dependent Claims (23, 24)
an overcurrent-protection element;
in a fuse;
in a household fusible cutout;
in a high-voltage/high-breaking-capacity fuse in a distribution network;
in a substrate fuse;
in electronics;
in microelectronics;
in high-voltage engineering; and
in a repeating fuse, preferably in one or more PTC elements.
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Specification