Material or article handling – Load support has linear vertical movement and additional... – Additional movement is rotational
Patent
1984-11-21
1987-05-12
Werner, Frank E.
Material or article handling
Load support has linear vertical movement and additional...
Additional movement is rotational
414642, 4146843, 414783, 414609, 414631, 414719, 414673, 212166, 254 3R, 254 93R, B66F 504
Patent
active
046645861
ABSTRACT:
A handling system supports a closure member, e.g. a manway cover or tensioner ring, for maintaining it in position when opening or closing operations are performed thereon and for moving it conveniently into or out of engagement with a mating member without damage to supporting studs. Gimbaling means include first and second attachable connections each vertically supported to a pneumatic cylinder assembly whose internal pressure is set to generate an upward force equal to the weight supported. An operator may provide a force to overcome damping forces at each support point to move the closure member in all degrees of freedom, and the member appears essentially weightless to the operator. The vertically movable connections are supported for translational movement on a cart which is also movable. Reliable movement of a closure member with respect to a pressure vessel is provided without the need for alignment or calibration of a path defined by the closure member support means.
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J. H. Bickford, "The Initial Preload--What Happens to It?", in Mechanical Engineering--Oct. 1983.
Cogan Robert P.
EG&G Sealol Inc.
Werner Frank E.
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