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US 2014/0368309 A1Published application
Circuit protection device
AssigneeLittelfuse, Inc.
InventorsG. Todd Dietsch, Olga Spaldon-Stewart, Stephen J. Whitney
Life of this patent
Estimating the term…
Abstract
A circuit protection device, including a conductor connected to first and second terminals and a spring exerting force on the conductor to move the conductor away from the first and/or second terminals when an over-voltage or over-temperature condition occurs within a charging circuit. One or more heat generating resistive elements melts material associated with one or more connection points of the conductor thereby releasing the conductor such that the spring moves the conductor to create an open circuit.
Claims20
A circuit protection device comprising:
- a substrate;
- a conducting layer disposed on said substrate, said conducting layer having a first terminal and a second terminal;
- a conductor disposed on said substrate, said conductor electrically connecting said first terminal and said second terminal creating a closed circuit between said first terminal and said second terminal during a normal operating condition;
- a low melting material disposed between said conductor and said first terminal and between said conductor and said second terminal;
- a resistive element disposed on said substrate;
- and
- a spring disposed on said substrate, said spring biased to displace said conductor during an abnormal circuit condition when said resistive element heats said low melting material creating an open circuit between said first terminal and said second terminal.
4 more elements
A circuit protection device comprising:
- a substrate for disposing one or more components of the circuit protection device onto;
- a conducting layer for conducting electrical current disposed on said substrate, said conducting layer having a first terminal and a second terminal for electrically connecting said circuit protection device to a battery and a source of charging said battery;
- a conductor for electrically connecting said first terminal and said second terminal creating a closed circuit therebetween during a normal operating condition disposed on said substrate;
- a low melting material for retaining said conducting layer in place during said normal operating condition disposed between said conductor and said first terminal and between said conductor and said second terminal;
- a resistive element for heating said low melting material during an abnormal circuit condition;
- and
- a spring for displacing said conductor creating an open circuit between said first terminal and said second terminal during said abnormal circuit condition.
4 more elements
Dependencies are inferred from the claim text.