Land vehicles – Wheeled – Attachment
Reexamination Certificate
2006-04-10
2009-12-22
Ilan, Ruth (Department: 3616)
Land vehicles
Wheeled
Attachment
C280S808000, C297S468000
Reexamination Certificate
active
07635150
ABSTRACT:
The present invention provides an automotive pretensioner seatbelt system, which includes a seatbelt webbing, a slip ring, a buckle, a pretensioner and a retractor. One end of the webbing is fixed to the anchor site of the vehicle body, while the other end of the webbing goes through the slip ring and links to the retractor. The pretensioner includes a stroke enlargement mechanism and a power source. The stroke enlargement mechanism includes a fixed component and a movable component. The webbing is wound around the fixed component and the movable component. The stroke enlargement mechanism ensures that the length of webbing retracted by the pretensioner is greater than the displacement of the movable component. Compared to conventional seatbelt systems, this seatbelt system allows more webbing to be retracted in the same time duration; in other words, it takes less time to retract a webbing of the same length. In this way, pretension of the present invention can be realized more efficiently.
REFERENCES:
patent: 5295714 (1994-03-01), Foehl
patent: 5346152 (1994-09-01), Foehl
patent: 5704638 (1998-01-01), Lane, Jr.
patent: 6460935 (2002-10-01), Rees et al.
patent: 2494997 (1982-06-01), None
patent: 10-2003-0012256 (2003-02-01), None
Wang JT, and Zhou Q, A Seat Belt Buckle Pretensioner and Load-Limiter Combo Device, 18th International Technical Conference on the Enhanced Safety of Vehicles, Paper No. 144, Nagoya, Japan, May 19-22, 2003.
Liu Qi
Zhou Qing
Frisby Keith
Ilan Ruth
Michael & Best & Friedrich LLP
Tsinghua University
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