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1. (WO1998053151) MANHOLE COVER RETROFIT ASSEMBLY

Pub. No.:    WO/1998/053151    International Application No.:    PCT/US1998/008467
Publication Date: Fri Nov 27 00:59:59 CET 1998 International Filing Date: Tue Apr 28 01:59:59 CEST 1998
IPC: E02D 29/14
Applicants: TOTAL CONTAINMENT, INC.
Inventors: BRAUN, Randy
GILBERT, David
Title: MANHOLE COVER RETROFIT ASSEMBLY
Abstract:
The manhole insert ring (32) of the present invention for manholes is mounted upon the existing cast iron ring (12) so that the composite manhole cover (30) can be rested therein. The ring (32) is preferably a single unit having an inner ring portion with an upper and side surfaces to support the cover and an outer ring portion with a lower surface for supporting the ring upon the iron cast ring (12). The outer ring portion has a peripheral flange that extends several inches outwardly from the inner ring cover support portion. The inner ring portion has a side surface that extends down from the upper flange in which the cover will fit, and an upper surface that extends inwardly from the lower end of the annular side surface to support the cover.