Belt retractor for vehicle safety belt systems
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United States of America Patent
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-
Jan 5, 1993
Grant Date -
N/A
app pub date -
Feb 14, 1991
filing date -
Feb 16, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When required a quasi-static blocking function is achieved in a fundamentally conventional belt retractor with vehicle-sensitive and/or webbing-sensitive blocking mechanism comprising a control disc (16) which is provided at its outer periphery with a control toothing (18) and by the movement of which relatively to the belt spool (12) the blocking mechanism is activatable. For this purpose a feeler (26) is held in spring-resilient engagement with the outer periphery of the belt coil. An actuating arm (34) of a control pawl (24) pivotally mounted on the housing (10) cooperates with control faces of said feeler (26). The control pawl (24) is movable between a first stable position in which it engages with its pawl tip (30) into the control toothing (18) and a second stable position in which it is moved out of the region of the control toothing. With its control faces the feeler (26) following the outer diameter of the webbing coil (B) moves the control pawl (24) into its first stable position when the outer diameter of the webbing coil has reached a predetermined minimum value and into its second stable position when said outer diameter has reached a predetermined intermediate value.
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