Manhole cover

Details Manhole cover Manhole cover

2005-05-17

2005-05-17

Will, Thomas B. (Department: 3671)

Road structure, process, or apparatus

Pavement

Vault cover-closure

C052S019000

Reexamination Certificate

active

06893186

ABSTRACT:
A temporary manhole cover for protecting workers purging a sewer line from splattering waste includes a substantially circular cover member having an outer rim bordering a central indented portion. The indented portion is transparent allowing the worker to observe the manhole interior if necessary. The cover member includes an elongated opening radially extending from the center of the indented portion to the outer edge of the rim. Disposed within the opening are a plurality of horizontal contiguous bristles. A water hose may be inserted into a manhole when the cover is properly installed by inserting the hose through the opening. The bristles retain the hose in a select position while retaining sewage within the manhole.

REFERENCES:
patent: 4492095 (1985-01-01), Brister
patent: 4551577 (1985-11-01), Byrne
patent: 5052851 (1991-10-01), Frishauf
patent: 5176389 (1993-01-01), Noone et al.
patent: 5507600 (1996-04-01), Takahashi
patent: 5842811 (1998-12-01), Johnson
patent: 6018914 (2000-02-01), Kamiyama et al.
patent: 20040016755 (2004-01-01), Gilbert et al.

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