Supports – Suspended supports – Adjustable
Reexamination Certificate
2006-01-21
2010-06-08
Sterling, Amy J (Department: 3632)
Supports
Suspended supports
Adjustable
C414S589000, C414S684300, C212S166000, C212S179000, C220S327000, C248S317000
Reexamination Certificate
active
07731145
ABSTRACT:
A portable manway cover handling apparatus and method comprises a lightweight support unit having a mounting tab secured to a manway portal flange within portal flange bolt holes by stud bolts projecting from expandable mandrel sleeves. A structural support beam is cantilevered from the mounting tab for attachment of a force line pulling machine. A force line from the pulling machine is attached to the manway cover and all manway flange bolts removed except a single loose hinge bolt proximate of the flange bottom. The pulling machine is operated to control the rotation of the manway cover about the hinge bolt to a stable suspension position whereat the manway portal is open.
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patent: 2006/0219649 (2006-10-01), Wolfford, Sr.
Le Tan
Marcontell W. Allen
Sterling Amy J
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