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US 4,599,597 AGranted
Circuit protection devices
AssigneeSociete d'Exploitation Soremec-Chess
InventorGuy Rotbart
Life of this patent
Estimating the term…
Abstract
A circuit protection device, particularly for printed circuit boards, comprises a slider (25) which is held in a first operating position by fusible wire (49) extending between two pegs (19,20). The slider is propelled by a spring (48), upon fusion of the fusible wire, into a second position in which it closes a signalling circuit by means of a conductive plate (33) which comes to rest against the pegs (21,22). Means (40,41; 46, 47) is provided to prevent rebound of the plate (33) from the pegs (21,22).
Claims11
A circuit protection device particularly for printed circuit boards, comprising:
- a base made of an insulating material;
- a first pair of pins projecting from one face of the base for connection to a circuit to be protected and projecting from the other face of the base to terminate in a first pair of pegs;
- an elongate fusible element connected between said first pair of pegs;
- a second pair of pins for connection to a circuit to be controlled and terminating in a second pair of pegs;
- a slider which is adapted to be retained adjacent the first pair of pegs by the fusible element;
- resilient means acting on the slider in the direction towards the second pair of pegs;
- guide means provided on the base for guiding the travel of the slider;
- a contact plate supported by the slider and engageable with the second pair of pegs after fusion of the fusible element;
- and
- co-operating means provided on the base and the slider for ensuring effective rebound--free contact between the contact plate and the second pair of pegs.
7 more elements
Dependencies are inferred from the claim text.