Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1996-08-19
1998-06-23
Lisehora, James
Road structure, process, or apparatus
Pavement
Vault cover-closure
52 20, 137370, 137371, E02D 2914
Patent
active
057695652
ABSTRACT:
A protective cover for sewer clean-out lines for protection of the termination end of the sewer clean-out line, but permitting access to the sewer clean-out line, the housing having a cast iron collar with removable cover made into an ABS plastic skirt by force fitting, the plastic skirt having a flared lower end to maintain the position of the housing with the upper surface and cover of the cast iron collar being flush with the level of the ground.
REFERENCES:
patent: 4350177 (1982-09-01), Firchau et al.
patent: 5063996 (1991-11-01), Kenner
patent: 5402848 (1995-04-01), Kelly
patent: 5525006 (1996-06-01), Kilman et al.
Martin Glenn
Martin, Jr. Thomas J.
C.P. Test Services-Valvco, Inc.
Frayne Clifford G.
Lisehora James
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