Differential pressure monitoring device

Details Differential pressure monitoring device Differential pressure monitoring device

1993-01-19

1994-03-22

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

7386147, 200 6158R, 280736, H01H 3534

Patent

active

052966593

ABSTRACT:
A novel hybrid air bag inflator system includes a differential pressure monitoring switch which comprises a sealed module containing a gas under a threshold pressure mounted in a gas bag filler tank. The capsule comprises a movable diaphragm connected to a fixed top plate and the diaphragm is supported on a shaped mandrel mounted on a switch body. The switch body and the mandrel are provided with a central aperture through which moves a movable piston and the movable piston forms a support for switch contacts which are normally open until the pressure in the hybrid air bag gas filler tank falls below a predetermined operable reference pressure at which time the switch contacts reach a closed position indicative of a failed or inoperative hybrid system.

REFERENCES:
patent: 3815935 (1974-06-01), Jones
patent: 3832507 (1974-08-01), Marquardt et al.
patent: 4049935 (1977-09-01), Gruber
patent: 5071160 (1991-12-01), White et al.
patent: 5226667 (1993-07-01), Coultas

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