| 摘要 |
A flexible arm rest for an automobile window sill which is attached by magnets to the outside of the automobile, hangs over the sill, and is urged downward within the automobile by weights. The magnets exert a force on the arm rest which exceeds the force by the weights, with the consequence that raising the window causes the inside edge to move upward until the arm rest is captured between the window and the window jam, in which configuration the arm rest functions as a sunscreen or sunshade.
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