Whiplash injuries prevention headrest apparatus and drowsy driving prevention alarm
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机译：防鞭打伤头枕装置和防止昏昏欲睡的驾驶警报
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摘要
A headrest apparatus for securing to a backrest of a seat such as a vehicle seat includes a headrest framework with generally parallel and spaced apart first and second side frames and a side frame connecting structure holding the side frames upright, and including a sheet assembly fitted to and suspended generally horizontally between and the first and second side frames above the seat backrest for supporting a user head.
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