EP 0084510 B1 19850529 - CIRCULAR MANHOLE FRAME WITH HINGED HALF-COVERS
Title (en)
CIRCULAR MANHOLE FRAME WITH HINGED HALF-COVERS
Publication
Application
Priority
FR 8200769 A 19820114
Abstract (en)
[origin: US4508469A] A manhole structure comprising a circular frame formed with a pair of diametrically opposite inwardly and upwardly open recesses traversed by respective pivot pins and a further pair of diametrically opposite brackets having inwardly and upwardly open recesses. A pair of semicircular cover heads, each has three radially projecting lugs including a pivot lug engaging a respective one of the pins and a pair of support lugs at opposite ends of the rectilinear edge of the cover half. The pivot lug has a pocket receiving the pin and communicating with a narrow slot whereby the pivot lug is inserted over the pin, the pocket being shaped so that when the cover is swung open, it can be braced between the pin and an edge of the recess. All of the recesses have wedge-forming inclined flanks which engage inclined flanks of the cover halves to support the latter in their closed positions.
IPC 1-7
IPC 8 full level
E02D 29/14 (2006.01); E02D 29/12 (2006.01)
CPC (source: EP US)
E02D 29/14 (2013.01 - EP US); E02D 29/1463 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI NL SE
DOCDB simple family (publication)
EP 0084510 A1 19830727; EP 0084510 B1 19850529; AT E13568 T1 19850615; CA 1218552 A 19870303; DE 3360209 D1 19850704; FR 2519665 A1 19830718; FR 2519665 B1 19840824; US 4508469 A 19850402
DOCDB simple family (application)
EP 83420005 A 19830112; AT 83420005 T 19830112; CA 419476 A 19830114; DE 3360209 T 19830112; FR 8200769 A 19820114; US 45714783 A 19830111