Pressure actuated circuit breaker with frangible printed circuit

Details Pressure actuated circuit breaker with frangible printed circuit Pressure actuated circuit breaker with frangible printed circuit

1996-05-08

1998-06-30

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Frangible or destructible type

429178, H01H 8500, H01M 234, H02H 718

Patent

active

057737754

ABSTRACT:
A pressure actuated breaker for cutting-off current flow in and from a battery in response to a relatively low internal pressure rise within the battery. The pressure cut-off sensor includes a box having an opening and being formed of an insulating material, a bendable packing for covering the opening and which is deformed into the box by external pressure, an actuator having a higher elasticity than the packing and being pressed by the deformation of the packing, and a breakable element supported in the box, the breakable member including a substrate and a conductive path formed on the substrate. When pressure within the battery exceeds a predetermined amount, the packing is pressed inward into the box, thereby pressing the actuator against the breakable member such that the substrate is cracked, thereby breaking the conductive path.

REFERENCES:
patent: 3072500 (1963-01-01), Berlinghof
patent: 3745276 (1973-07-01), McPherson
patent: 3748413 (1973-07-01), Sawyer
patent: 3822369 (1974-07-01), Kunczynski
patent: 3859482 (1975-01-01), Matsui et al.
patent: 4178855 (1979-12-01), McVay et al.
patent: 5418082 (1995-05-01), Taki et al.
patent: 5585207 (1996-12-01), Wakabe et al.

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