| 摘要 |
A removable cover for covering an access opening in a structure includes a plate member having two opposite side edges and front and rear sides. An elongate clamping member has two opposite end sections each forming an elongate clamping element and each extending towards a respective one of the side edges from a central region of the plate member. The clamping member is formed from a flexible material and is attached at a central portion thereof to the rear side of the plate. The two opposite end sections are substantially rigid while a central section has at least one flexible transverse portion. A separate spring device is mounted on the clamping member and has two elongate spring arms projecting outwardly in order to engage and bias the clamping elements towards engagement with the rear side of the plate member. |
