Material or article handling – Vertically swinging load support – Door remover
Reexamination Certificate
1999-11-15
2011-10-25
Underwood, Donald (Department: 3652)
Material or article handling
Vertically swinging load support
Door remover
C212S166000, C254S13300A
Reexamination Certificate
active
08043041
ABSTRACT:
A manhole lifting apparatus comprising a base support assembly and a lifting mechanism. There is a beam structure which extends over the manhole, with a pivot support at one end of the beam structure, and a mobile support at the opposite end of the beam structure. The lifting mechanism is at the central part of the beam structure. The lifting mechanism lifts the manhole cover, and the support assembly is rotated about the pivot support to remove the manhole cover from the manhole.
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Davis Steven M.
Neeley Alvin L.
Hughes Robert B.
Hughes Law Firm PLLC
Underwood Donald
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