Supports – Brackets – Specially mounted or attached
Reexamination Certificate
2004-09-15
2008-09-30
Sterling, Amy J. (Department: 3632)
Supports
Brackets
Specially mounted or attached
C404S026000
Reexamination Certificate
active
07429022
ABSTRACT:
A manhole collar for mounting in a manhole is defined by a tube with rigid strips shaped to form lobes welded around the upper edge with a bottom edge of each lobe for engaging the ground or other surface around the manhole. A support sleeve is mounted on the tube in a recessed notch at an angular location thereon defining a cylindrical receptacle to hold a post standing up from the manhole for a davit or the like. The sleeve extends partly into the tube and partly outwardly and on the outside is supported by one of the lobes and on the inside by a planar chordal gusset plate. The sleeve includes a cylindrical bushing and a clamping pin for clamping the post in the sleeve engaging through a hole in the sleeve against an outer surface of the cylindrical bushing so that threaded adjustment of the pin causes an end of the pin to press against the cylindrical bushing and divert the bushing inwardly.
REFERENCES:
patent: 5211504 (1993-05-01), Trudel
patent: 5344253 (1994-09-01), Sacchetti
patent: 5564855 (1996-10-01), Anderson
patent: 5944442 (1999-08-01), Roush et al.
patent: 6344137 (2002-02-01), Chiang
patent: 6520713 (2003-02-01), Sondrup
patent: 6524026 (2003-02-01), Sondrup
patent: 6695526 (2004-02-01), Sondrup
patent: 6997639 (2006-02-01), Nadasde
Specifications for “UCL Safety Systems Manhole Collar”, UCL Safety Systems, 2 pages (Sep. 17, 1999).
Capital Safety Group Winnipeg Ltd.
IPLM Group, P.A.
Sterling Amy J.
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