A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A ground surface access assembly cover defines an aperture 20 for a key. The cover includes a keyway enclosure 34 defining a pocket 36 located in use beneath and communicating with the aperture. The cover includes a pocket preserving device 38 located in the pocket. The device may comprise a surface which is movable between a position relatively close to the keyway aperture and a position relatively further away from the keyway aperture. In the relatively closed position, the device surface may restrict or substantially prevent the entry of unwanted material into the pocket, may abut the keyway aperture and may provide a seal between the aperture and the pocket. The surface may be moved from the closed to the further away position by the insertion of a part of a key through the keyway aperture into the pocket, the part of the key acting on the surface to move the surface during insertion. The cover may include a biasing means, which biases the surface to the closed position. The device may be formed of a resiliently deformable material, which comprises the biasing means.
A ground surface access assembly cover defines an aperture 20 for a key. The cover includes a keyway enclosure 34 defining a pocket 36 located in use beneath and communicating with the aperture. The cover includes a pocket preserving device 38 located in the pocket. The device may comprise a surface which is movable between a position relatively close to the keyway aperture and a position relatively further away from the keyway aperture. In the relatively closed position, the device surface may restrict or substantially prevent the entry of unwanted material into the pocket, may abut the keyway aperture and may provide a seal between the aperture and the pocket. The surface may be moved from the closed to the further away position by the insertion of a part of a key through the keyway aperture into the pocket, the part of the key acting on the surface to move the surface during insertion. The cover may include a biasing means, which biases the surface to the closed position. The device may be formed of a resiliently deformable material, which comprises the biasing means.
Ground surface access assembly covers
BARRY TURNER (author)
2021-10-13
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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