Manhole cutting and removing device

Details Manhole cutting and removing device Manhole cutting and removing device

2007-09-13

2010-06-22

Addie, Raymond W (Department: 3671)

Road structure, process, or apparatus

Apparatus

With surface marking

C299S039100, C299S039300, C404S025000, C175S005000

Reexamination Certificate

active

07740415

ABSTRACT:
A device to secure, cut and sequentially remove a manhole from a street environment. The manhole removing device is supported and rotatably driven hydraulically by a mobile operation equipment. A circular disk assembly has adjustable pavement cutters adjustably positioned from there within inter-related manhole centering and a locking alignment and engagement plate assembly define a one-step cutting and removal of an existing manhole from the street for replacement.

REFERENCES:
patent: 4332299 (1982-06-01), Parks et al.
patent: 4924951 (1990-05-01), Paulson
patent: 4968101 (1990-11-01), Bossow
patent: 5470131 (1995-11-01), Nolan et al.
patent: 6536987 (2003-03-01), Chang
patent: 6709064 (2004-03-01), Nettck
patent: 6755481 (2004-06-01), Katsumoto

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