A ground surface access assembly frame and method of installation or replacement

A ground surface access assembly frame and method of installation or replacement

A ground surface access assembly frame 10 has a key-engaging member 16 externally of the frame to allow engagement of a key by sideways- and then upwards- motion. The key-engaging member extends from a support flange 14. The key-engaging member may have a roof portion 20 raised from the frame, with...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Simon John Gibson, Simon John Turner, Samantha Sarah Elizabeth Evans, Liam Mark Ratcliffe, Barry Turner
Format: Patent
Sprache:eng
Schlagworte:
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Beschreibung
Zusammenfassung:A ground surface access assembly frame 10 has a key-engaging member 16 externally of the frame to allow engagement of a key by sideways- and then upwards- motion. The key-engaging member extends from a support flange 14. The key-engaging member may have a roof portion 20 raised from the frame, with a pair of recessed slots 18 to engage the key. The roof portion may have a generally "U-shaped" cutaway to allow sideways access of the shaft of a lifting key.