Patent US5500782A successfully refreshed from Google Patents.
US5500782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid surge protector
Assignee: Bourns Inc
•
Filing: 1993-10-29
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Granted: 1996-03-19
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Expires: 2013-10-29
Abstract
Abstract A protector arrangement is disclosed having first and second protector terminals, a gas discharge tube, and a metal oxide varistor. The gas discharge tube is connected to the first and second protector terminals. The metal oxide varistor is connected to the first and second protector terminals so that the metal oxide varistor acts as a backup to the gas discharge tube and so that the first and second protector terminals are automatically shorted in response to a thermal overload condition. The protector arrangement may be mounted in a weathertight housing.
Inventors
- 👤 Hans-Wolfgang Oertel
- 👤 David L. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:01
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/14
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
60 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition.
Claim 2
Dependent Claim
60 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition.
Claim 3
Dependent Claim
90 words
The protector arrangement of claim 1 wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube.
Claim 4
Dependent Claim
94 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the means comprises a spring contact which is electrically coupled to the second protector terminal and which is biased away from the first protector terminal until an occurrence of the thermal overload condition.
Claim 5
Dependent Claim
94 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the means comprises a spring contact which is electrically coupled to the second protector terminal and which is biased away from the first protector terminal until an occurrence of the thermal overload condition.
Claim 6
Dependent Claim
150 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically coupled to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal in such a way that the spring contact is released upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 7
Dependent Claim
150 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically coupled to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal in such a way that the spring contact is released upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 8
Dependent Claim
37 words
The protector arrangement of claim 4 wherein the first varistor terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by the thermal overload condition.
Claim 9
Dependent Claim
162 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal by the metal oxide varistor in such a way that the spring contact is released by the metal oxide varistor upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 10
Dependent Claim
162 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal by the metal oxide varistor in such a way that the spring contact is released by the metal oxide varistor upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 11
Dependent Claim
60 words
The protector arrangement of claim 6 wherein the first varistor terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by the thermal overload condition to release the metal oxide varistor to in turn release the spring contact in order to short the first and second protector terminals.
Claim 12
Dependent Claim
173 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube, wherein the means comprises a spring contact attached to the second protector terminal and biased away from the first protector terminal until an occurrence of the thermal overload condition.
Claim 13
Dependent Claim
173 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube, wherein the means comprises a spring contact attached to the second protector terminal and biased away from the first protector terminal until an occurrence of the thermal overload condition.
Claim 14
Dependent Claim
234 words
A protector arrangement comprising: first and second protector terminals;. a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically coupled to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal in such a way that the spring contact is released upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 15
Dependent Claim
234 words
A protector arrangement comprising: first and second protector terminals;. a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically coupled to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal in such a way that the spring contact is released upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 16
Dependent Claim
37 words
The protector arrangement of claim 9 wherein the first varistor terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by the thermal overload condition.
Claim 17
Dependent Claim
246 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal by the metal oxide varistor in such a way that the spring contact is released by the metal oxide varistor upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 18
Dependent Claim
246 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals such that the first and second protector terminals are automatically shorted in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein the metal oxide varistor has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein the metal oxide varistor has a response time which is shorter than the response time of the gas discharge tube, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal by the metal oxide varistor in such a way that the spring contact is released by the metal oxide varistor upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 19
Dependent Claim
60 words
The protector arrangement of claim 11 wherein the first varistor terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by the thermal overload condition to release the metal oxide varistor to in turn release the spring contact in order to short the first and second protector terminals.
Claim 20
Dependent Claim
99 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition.
Claim 21
Dependent Claim
99 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition.
Claim 22
Dependent Claim
131 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the means comprises a spring contact electrically attached to the third protector terminal and biased away from the first and second protector terminals until an occurrence of a thermal overload condition.
Claim 23
Dependent Claim
131 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the means comprises a spring contact electrically attached to the third protector terminal and biased away from the first and second protector terminals until an occurrence of a thermal overload condition.
Claim 24
Dependent Claim
238 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the first metal oxide varistor has first and second varistor terminals, wherein the second metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal, wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal, wherein the means comprises a spring contact electrically coupled to the third protector terminal, wherein the spring contact is electrically coupled to the second varistor terminals of the first and second metal oxide varistors, and wherein the spring contact is biased away from the first and second protector terminals in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the first, second, and third protector terminals.
Claim 25
Dependent Claim
238 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the first metal oxide varistor has first and second varistor terminals, wherein the second metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal, wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal, wherein the means comprises a spring contact electrically coupled to the third protector terminal, wherein the spring contact is electrically coupled to the second varistor terminals of the first and second metal oxide varistors, and wherein the spring contact is biased away from the first and second protector terminals in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the first, second, and third protector terminals.
Claim 26
Dependent Claim
81 words
The protector arrangement of claim 15 wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition, and wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition.
Claim 27
Dependent Claim
288 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the first metal oxide varistor has first and second varistor terminals, wherein the second metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal, wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal, wherein the means comprises a spring contact electrically coupled to the third protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminals of the first and second metal oxide varistors, wherein the spring contact is biased away from the first protector terminal by the first metal oxide varistor in such a way that the spring contact is released upon occurrence of a thermal overload condition to in order short the first and third protector terminals, and wherein the spring contact is biased away from the second protector terminal by the second metal oxide varistor in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the second and third protector terminals.
Claim 28
Dependent Claim
288 words
A protector arrangement comprising: first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the first metal oxide varistor has first and second varistor terminals, wherein the second metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal, wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal, wherein the means comprises a spring contact electrically coupled to the third protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminals of the first and second metal oxide varistors, wherein the spring contact is biased away from the first protector terminal by the first metal oxide varistor in such a way that the spring contact is released upon occurrence of a thermal overload condition to in order short the first and third protector terminals, and wherein the spring contact is biased away from the second protector terminal by the second metal oxide varistor in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the second and third protector terminals.
Claim 29
Dependent Claim
129 words
The protector arrangement of claim 17 wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition to release the first metal oxide varistor to in turn release the spring contact in order to short the first and third protector terminals, and wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition to release the second metal oxide varistor to in turn release the spring contact in order to short the second and third protector terminals.
Claim 30
Dependent Claim
193 words
A protector arrangement comprising:. first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein each of the first and second metal oxide vafistors has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein each of the first and second metal oxide varistors has a response time which is shorter than the response time of the gas discharge tube.
Claim 31
Dependent Claim
193 words
A protector arrangement comprising:. first, second, and third protector terminals; a gas discharge tube electrically coupled to the first, second, and third protector terminals; a first metal oxide varistor; a second metal oxide varistor; and, means for electrically coupling the first metal oxide varistor to the first and third protector terminals, for electrically coupling the second metal oxide varistor to the second and third protector terminals, for automatically shorting the first and third protector terminals in response to a thermal overload condition, and for automatically shorting the second and third protector terminals in response to a thermal overload condition, wherein the protector arrangement has a capacitance which is less than 30 pF, wherein the gas discharge tube has a breakdown voltage, wherein each of the first and second metal oxide vafistors has a clamping voltage above the breakdown voltage of the gas discharge tube, wherein the gas discharge tube has a response time on the order of about 7.5 microseconds at 100 volts per microsecond rise, and wherein each of the first and second metal oxide varistors has a response time which is shorter than the response time of the gas discharge tube.
Claim 32
Dependent Claim
38 words
The protector arrangement of claim 19 wherein the means comprises a spring contact electrically attached to the third protector terminal and biased away from the first and second protector terminals until an occurrence of a thermal overload condition.
Claim 33
Dependent Claim
145 words
The protector arrangement of claim 19 wherein the first metal oxide varistor has first and second varistor terminals, wherein the second metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal, wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal, wherein the means comprises a spring contact electrically coupled to the third protector terminal, wherein the spring contact is electrically coupled to the second varistor terminals of the first and second metal oxide varistors, and wherein the spring contact is biased away from the first and second protector terminals in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the first, second, and third protector terminals.
Claim 34
Dependent Claim
81 words
The protector arrangement of claim 21 wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition, and wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition.
Claim 35
Dependent Claim
195 words
The protector arrangement of claim 19 wherein the first metal oxide varistor has first and second varistor terminals, wherein the second metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal, wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal, wherein the means comprises a spring contact electrically coupled to the third protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminals of the first and second metal oxide varistors, wherein the spring contact is biased away from the first protector terminal by the first metal oxide varistor in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the first and third protector terminals, and wherein the spring contact is biased away from the second protector terminal by the second metal oxide varistor in such a way that the spring contact is released upon occurrence of a thermal overload condition in order to short the second and third protector terminals.
Claim 36
Dependent Claim
129 words
The protector arrangement of claim 23 wherein the first varistor terminal of the first metal oxide varistor is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition to release the first metal oxide varistor to in turn release the spring contact in order to short the first and third protector terminals, and wherein the first varistor terminal of the second metal oxide varistor is electrically coupled to the second protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition to release the second metal oxide varistor to in turn release the spring contact in order to short the second and third protector terminals.
Claim 37
Dependent Claim
134 words
A protector arrangement comprising: first and second protector terminals; a first protection element electrically coupled to the first and second protector terminals; a second protection element, wherein the first and second protection elements are different types of protection elements, wherein the second protection element has first and second element terminals, and wherein the first element terminal is electrically coupled to the first protector terminal; and, a spring contact electrically coupled to the second protector terminal and electrically and mechanically attached to the second element terminal, wherein the spring contact is biased away from the first protector terminal by the second protection element in such a way that the spring contact is released by the second protection element upon occurrence of a thermal overload condition in order to short the first and second protector terminals.
Claim 38
Dependent Claim
134 words
A protector arrangement comprising: first and second protector terminals; a first protection element electrically coupled to the first and second protector terminals; a second protection element, wherein the first and second protection elements are different types of protection elements, wherein the second protection element has first and second element terminals, and wherein the first element terminal is electrically coupled to the first protector terminal; and, a spring contact electrically coupled to the second protector terminal and electrically and mechanically attached to the second element terminal, wherein the spring contact is biased away from the first protector terminal by the second protection element in such a way that the spring contact is released by the second protection element upon occurrence of a thermal overload condition in order to short the first and second protector terminals.
Claim 39
Dependent Claim
60 words
The protector arrangement of claim 25 wherein the first element terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by a thermal overload condition to release the second protection element to in turn release the spring contact in order to short the first and second protector terminals.
Claim 40
Dependent Claim
16 words
The protector arrangement of claim 26 wherein the protector arrangement is mounted within a weathertight housing.
Claim 41
Dependent Claim
76 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals in parallel to the gas discharge tube such that the first and second protector terminals are automatically shorted in response to a vented condition of the gas discharge tube and a thermal overload condition.
Claim 42
Dependent Claim
76 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals in parallel to the gas discharge tube such that the first and second protector terminals are automatically shorted in response to a vented condition of the gas discharge tube and a thermal overload condition.
Claim 43
Dependent Claim
166 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals in parallel to the gas discharge tube such that the first and second protector terminals are automatically shorted in response to a vented condition of the gas discharge tube and a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically coupled to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal in such a way that the spring contact is released upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 44
Dependent Claim
166 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals in parallel to the gas discharge tube such that the first and second protector terminals are automatically shorted in response to a vented condition of the gas discharge tube and a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically coupled to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal in such a way that the spring contact is released upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 45
Dependent Claim
37 words
The protector arrangement of claim 29 wherein the first varistor terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by the thermal overload condition.
Claim 46
Dependent Claim
178 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals in parallel to the gas discharge tube such that the first and second protector terminals are automatically shorted in response to a vented condition of the gas discharge tube and a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal by the metal oxide varistor in such a way that the spring contact is released by the metal oxide varistor upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 47
Dependent Claim
178 words
A protector arrangement comprising: first and second protector terminals; a gas discharge tube electrically coupled to the first and second protector terminals; a metal oxide varistor; and, means for electrically coupling the metal oxide varistor to the first and second protector terminals in parallel to the gas discharge tube such that the first and second protector terminals are automatically shorted in response to a vented condition of the gas discharge tube and a thermal overload condition, wherein the metal oxide varistor has first and second varistor terminals, wherein the first varistor terminal is electrically coupled to the first protector terminal, wherein the means comprises a spring contact electrically coupled to the second protector terminal, wherein the spring contact is electrically and mechanically attached to the second varistor terminal, and wherein the spring contact is biased away from the first protector terminal by the metal oxide varistor in such a way that the spring contact is released by the metal oxide varistor upon occurrence of the thermal overload condition in order to short the first and second protector terminals.
Claim 48
Dependent Claim
60 words
The protector arrangement of claim 31 wherein the first varistor terminal is electrically coupled to the first protector terminal by a heat sensitive material which fuses in the presence of heat generated by the thermal overload condition to release the metal oxide varistor to in turn release the spring contact in order to short the first and second protector terminals.
References Cited (Backward Citations)
US3703665A
Cited
US3863111A
Cited
US4023071A
Cited
US4099217A
Cited
US4188561A
Cited
US4158869A
Cited
US4199736A
Cited
US4208694A
Cited
US4308566A
Cited
US4241374A
Cited
US4249224A
Cited
US4321649A
Cited
US4288833A
Cited
US4359764A
Cited
US4502087A
Cited
US4467390A
Cited
US4493003A
Cited
US4633359A
Cited
US4663692A
Cited
US4734823A
Cited
US4910632A
Cited
US4866562A
Cited
US4862311A
Cited
US5224012A
Cited
US5278720A
Cited
US5384679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-19 | 1999-09-18 | 2000-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-19 | 2003-09-18 | 2004-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-19 | 2007-09-18 | 2008-03-19 | $7700.00 | Window Closed / Lapsed |