Winding – tensioning – or guiding – Reeling device – With spring motor
Reexamination Certificate
2008-03-11
2008-03-11
Cuomo, Peter M. (Department: 3654)
Winding, tensioning, or guiding
Reeling device
With spring motor
C242S375100, C242S384000
Reexamination Certificate
active
11175852
ABSTRACT:
A seat belt retractor has a winding shaft to wind a seat belt. A motive spring pretensions the winding shaft in the winding direction of the seat belt. An electric motor provides a torque that can be transmitted to the motive spring to change the spring force. A switch coupling transmits the torque of the electric motor drive to the winding shaft to retract the seat belt. To transmit the torque, a drive wheel, which is rotatably mounted on a shaft non-rotatably and coaxially connected to the winding shaft and which is non-rotatably connected to an outer spring end of the motive spring by a rigid rotational connection. A first active surface of the coupling is movably mounted against a restoring force to a component that is securely connected to the rigid rotational connection and rotatable around the shaft. A second active surface of the coupling is non-rotatably connected to the shaft.
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Cuomo Peter M.
Drayer Lonnie
Haugland Scott
Key Safety System, Inc.
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