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US 12,224,145 B2Granted
Protection device
AssigneeLittelfuse Japan G.K.
InventorsToshikazu Yamaoka, Hajime Takahashi, Katsuaki Suzuki
Life of this patent
Estimating the term…
Abstract
A protection device includes a movable arm, a fixed terminal, and a bimetallic member, and a casing that accommodates them, the bimetallic member is located either above or below the movable arm, one end of the bimetallic member applies force to one end of the movable arm, thereby holding one end of the movable arm and the fixed terminal in contact.
Claims13
A protection device comprising:
- a fixed terminal;
- a movable arm comprising a movable arm end;
- a bimetallic member located either above or below the movable arm, the bimetallic member comprising a bimetallic member end;
- and
- a casing to accommodate the fixed terminal, the movable arm, and the bimetallic member;
- wherein the bimetallic member end applies a force to the movable arm end, thereby holding the movable arm end in contact with the fixed terminal;
- the bimetallic member further comprising a weakened portion adapted to cause the bimetallic member to fail in an open state after a predetermined number of state changes, whereby the bimetallic member can no longer hold the movable arm end in contact with the fixed terminal.
4 more elements
Dependencies are inferred from the claim text.