Cover apparatus for an access pipe opening

Details Cover apparatus for an access pipe opening Cover apparatus for an access pipe opening

2005-05-03

2005-05-03

Will, Thomas B. (Department: 3671)

Road structure, process, or apparatus

Pavement

Vault cover-closure

C052S019000, C052S020000

Reexamination Certificate

active

06887012

ABSTRACT:
Cover apparatus for temporarily covering access openings for water, drain, manhole and overflow pipes when the access openings are exposed, such as during construction, to prevent dirt, dust or unauthorized access to the access openings includes a top portion which extends outwardly beyond the access opening, an outer depending side wall which fits within the access opening, an outwardly flared lower side wall which extends below the outer depending side wall, a central cylindrical wall depending from the top portion in spaced relation from the depending side wall, and a plurality of ribs extending between the central wall and the depending side wall. A pump is secured within the central ring, and an expandable bladder in fluid communication with the pump is positioned on the depending side wall, between the top portion and the outwardly flared side wall. When inflated, the expandable bladder seals the cover apparatus to the access opening. In place of an expandible bladder, an elastomeric seal element is used, for small diameter access openings.

REFERENCES:
patent: 4523407 (1985-06-01), Miller
patent: 5046886 (1991-09-01), Muir et al.
patent: 5240346 (1993-08-01), Yin
patent: 5275501 (1994-01-01), Amorese et al.
patent: 5366317 (1994-11-01), Solimar
patent: 6007270 (1999-12-01), Bowman

Affiliated with

Also associated with

Rating

Cover apparatus for an access pipe opening does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cover apparatus for an access pipe opening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cover apparatus for an access pipe opening will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3421988