| 摘要 |
The invention relates to a lifting cushion ( 20 ) that is wedge-shaped and is formed by a top part ( 1 ) and a bottom part ( 2 ) with connecting walls ( 3 - 33 ), and which is arranged to be tillable with fluid, e.g., air, gas or liquid. The top part ( 1 ) and the bottom part ( 2 ) are joined to a common unit ( 21 ) in the forward edge ( 4 ) of the cushion, and said forward edge ( 4 ) is extended in relation to the front wall ( 3 ) of the lifting cushion and forms thereby a thin fore extended part ( 21 ) in front of said front wall ( 3 ) and that is active during the insertion but passive during operation. Said fore part ( 21 ) of the wedge-shaped lifting cushion is arranged in such a way that when the lifting cushion ( 20 ) is filled with fluid, the fore extended top part ( 1 ) and the bottom part ( 2 ) are expanded without preventing the fore wall ( 3 ) of the lifting cushion from smoothing out and forming the fore part of the lifting cushion in a filled state.
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