Traversing hoists – Ship mounted or floating – Including counterweight or means to compensate for list,...
Reexamination Certificate
2007-01-30
2008-05-06
Brahan, Thomas J. (Department: 3654)
Traversing hoists
Ship mounted or floating
Including counterweight or means to compensate for list,...
C254S900000
Reexamination Certificate
active
07367464
ABSTRACT:
The inventive control system, as typically embodied, includes sensing mechanisms, a computational processing unit, and an algorithm for processing inputs and generating outputs to control a rotating pedestal crane equipped with a Rider Block Tagline System (RBTS). Typical inventive embodiments uniquely feature a processing algorithm that distributes various control modes that operate not only through the crane's hoisting, luffing, and slewing mechanisms but also through the crane's RBTS; the inventive algorithm thereby effectuates motion compensation and pendulation damping with respect to the crane. This algorithmic allocation of control represents a more efficient crane anti-pendulation methodology than conventional methodologies; in particular, the inventive methodology exerts significantly greater control of the payload while exacting significantly less burden upon the hoisting, luffing, and slewing mechanisms of the crane.
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Agostini Michael J.
Bird, III J. Dexter
Green Jeffrey P.
Leban Frank A.
Parker Gordon G.
Brahan Thomas J.
Kaiser Howard
The United States of America as represented by the Secretary of
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