Manhole head assembly having a manhole top ring and method of us

Details Manhole head assembly having a manhole top ring and method of us Manhole head assembly having a manhole top ring and method of us

1992-10-30

1994-11-08

Rosenbaum, Mark

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 20, E02D 2914

Patent

active

053621751

ABSTRACT:
The invention relates to a manhole head assembly of the type having a substantially vertical axis and being intended to be mounted on a conventional manhole member made of non-elastic material. The invention also relates to a manhole ring having an omni-directional upper part and to a method of use of said manhole ring.

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Regard circulaire-Advertising brochure of the firm VIBRAPIPE (No Date Given).
An advertising brochure of Domal Rubber Manhole Transition Collars and Risers (No Date Given).
An advertising brochure of Mueller Canada Inc. (in the French language) (No Date Given).
An advertising brochure of Mueller Canada Inc. (No Date Given).
An advertising brochure of Fonderie Laperle Ltee. (in the French language) (No Date Given).
An advertising brochure of Fonderie Laperle Ltee. (No Date Given).

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