Automatic safety belt system, particularly for vehicular, especi

Details Automatic safety belt system, particularly for vehicular, especi Automatic safety belt system, particularly for vehicular, especi

1976-02-24

1977-01-11

Peters, Joseph F.

Motor vehicles

Bodies

242107, 2421074R, 280744, B60R 2100

Patent

active

040022196

ABSTRACT:
To provide for essentially uniform tension of a safety belt extended by a user from a belt supply, a roll-up motor is mechanically, serially connected to a spring housing which includes a spiral spring, to which one end thereof is attached, the other end of the spring being attached to the shaft of the belt roll-up unit. A traveling nut is threaded on the shaft of the roll-up unit, axial movement of which is sensed by a three-position switch which controls the motor to pay out more, or take up some belt if the tension on the belt does not fall within the tension as set by the spring and controlling a center-OFF position of the three-position switch. Roll-up operation of the motor is started by a current pulse supplied from a latch switch incorporated in the engaging latch of the belt and abruptly changing state upon disengagement of the belt from the latch.

REFERENCES:
patent: 2905231 (1959-09-01), Olson
patent: 3771742 (1973-11-01), Okada
patent: 3880364 (1975-04-01), Andres
patent: 3912035 (1975-10-01), Ulert

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