EP0045891A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
High powered over-voltage protection
Assignee: Chomerics Inc
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Filing: 1981-07-27
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Granted: —
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Expires: 2001-07-27
Abstract
Abstract The overload protection material of this invention comprises a plastic preferably an elastomer, e.g. silicone rubber, homogeneously and highly loaded with silicon carbide particles (powder) and a lesser amount of a Group IV B element-carbide particles (powder). The material is preferably form stable and is placed (across) a semiconductor junction or between electrodes of a device to be protected so that when high voltage surges appear across the junction or device to be protected the material breaks down (conducts) before the junction or device is destroyed. The material is bidirectionally conductive in its voltage threshold characteristic and repeatedly recovers unlike a fuse so that it provides continuous high voltage over-voltage (e.g. surge) protection.
Inventors
- 👤 Paul Joseph Malinaric
- 👤 Vincent Squitieri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 13:11
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/118; H01C7/12; H01C7/13
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
33 words
As an article of manufacture, a threshold voltage conduction material comprising a dielectric plastic binder having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B element-carbide.
Claim 2
Dependent Claim
33 words
As an article of manufacture, a threshold voltage conduction material comprising a dielectric plastic binder having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B element-carbide.
Claim 3
Dependent Claim
13 words
The material of claim 1 in which the element-carbide is particulate titanium carbide.
Claim 4
Dependent Claim
13 words
The material of claim 1 in which the element-carbide is particulate zirconium carbide.
Claim 5
Dependent Claim
15 words
The material of claim 1, 2 or 3 in which the binder is an elastomer.
Claim 6
Dependent Claim
41 words
The material of claim 1,2 or 3 in which the silicon carbide is about 20 to 35 volume percent of and the Group IV B element-carbide is about 5 to 20 volume percent of the total volume of binder and particulate.
Claim 7
Dependent Claim
18 words
The material of any one of claims 1,2, 3 or 5 in which the binder is an elastomer.
Claim 8
Dependent Claim
12 words
The material of claim 6 in which the binder is silicone plastic.
Claim 9
Dependent Claim
22 words
The material of any one of claims 1 to 7 in which the threshold conduction is between about 1000 to 25 volts.
Claim 10
Dependent Claim
41 words
An assembly containing a semiconductor junction and a threshold conducting material coupled in parallel with said junction, said material being form stable and having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B clement-carbide.
Claim 11
Dependent Claim
41 words
An assembly containing a semiconductor junction and a threshold conducting material coupled in parallel with said junction, said material being form stable and having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B clement-carbide.
Claim 12
Dependent Claim
25 words
The assembly of claim 9 in which the volume amount of silicon carbide and Group IV B element- carbide is as claimed in claim 5.
Claim 13
Dependent Claim
14 words
The assembly of claim 9 or 10 in which the binder is an elastomer.
Claim 14
Dependent Claim
55 words
The assembly according to claim 9,10 or 11 in which the assembly comprises an outer metal casing in which the junction is positioned, an electrode coupled to one side of the junction and the casing coupled to the other side of the junction, the material positioned in electrical contact with said casing and said electrode.
Claim 15
Dependent Claim
44 words
The assembly of claim 12 in which said material is in the form of a washer the portion thereof defining the outsize diameter of the washer in contact with the casing and the portion thereof defining the inner diameter in contact with the electrode.
Claim 16
Dependent Claim
24 words
An assembly comprising at least two electrodes or circuit lines having electrically coupled between them the threshold voltage conduction material of claim.1,2,3,4,5,6, or 7.
Claim 17
Dependent Claim
16 words
The assembly of claim 14 in which the circuit lines are on a dielectric circuit board.
References Cited (Backward Citations)
No citation records indexed.
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