Method of assembling a differential pressure monitoring device

Details Method of assembling a differential pressure monitoring device Method of assembling a differential pressure monitoring device

1994-03-18

1996-02-20

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

H01H 1100

Patent

active

054918847

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 P1 in the hybrid air bag gas filler tank falls below a predetermined operable reference pressure P 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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