Motor vehicles – With belt or harness for restraining occupant – and means... – System comprises ignition circuit or starter circuit or...
Patent
1984-10-29
1986-03-11
Bertsch, Richard A.
Motor vehicles
With belt or harness for restraining occupant, and means...
System comprises ignition circuit or starter circuit or...
24603, 280801, 180282, B60R 2100
Patent
active
045749116
ABSTRACT:
A seat belt buckle emergency release system is provided for installation in conjunction with a seat belt system in a motor vehicle so that, in the event of the motor vehicle sustaining an impact of sufficient magnitude as to warrant emergency release of the seat belt system, an electrically-operable actuator in a seat belt buckle of the seat belt system is actuated to release the seat belt system a short predetermined time interval after the vehicle has come to rest. The emergency release system includes two omni-directional sensors 108, 110, incorporated in an electronic timing and actuator operation circuit controlling the actuation of the electrically-operable actuator in the seat belt buckle. Sensor 108 is responsive only to a predetermined high acceleration indicative of vehicle impact, and sensor 110 is responsive to a predetermined acceleration substantially lower than said predetermined high acceleration and indicative of substantial vehicle movement. Actuation of sensor 108 causes an electronic timer 126 to operate a relay 176 to actuate the electrically-operable actuator in the seat belt buckle through lines 178, 180, a predetermined short time delay period after actuation of sensor 108 occurs. If sensor 110 becomes actuated during this short time delay period after actuation of sensor 108, electronic timer 126 is re-set so that the predetermined time period starts again. The circuit is so designed that actuation of sensor 110 at any time outside the predetermined short delay period after actuation of sensor 108 does not cause actuation of the emergency release system. A preferred embodiment of the invention includes a manually-operable switch 156, the operation of which will check that the emergency release system is operational. The emergency release system of the present invention is additional to the normal manual release system of the seat belt system, and does not interfere in any way with the operation of such a manual release system.
REFERENCES:
patent: 3311188 (1967-03-01), Gutshall
patent: 3905440 (1975-09-01), Okada et al.
patent: 4081052 (1978-03-01), Scharer
patent: 4345665 (1982-08-01), Fohl
patent: 4410061 (1983-10-01), Terabayashi
Bertsch Richard A.
General Motors Corporation
Leahy Charles E.
LandOfFree
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