| 摘要 |
The Bed Leveler/Adjuster, when mounted into the sleeping cavity of a tractor truck, is a lightweight, economical, compact in height bed frame assembly that will either level the head and foot ends of the sleeping mattress when needed, or allow three seperate vertically adjustable sections of the sleeping mattress to be operated by the user to recline in a combination of ways. The Bed Leveler/Adjuster is operated by the use of a control unit that is powered by regulated air pressure supplied by the tractor truck.
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