Patent ID: 8287212
Filing Date: 2012-10-16
Classification: E02B

Abstract:
1. A cantilever system for a rig, comprising: a hull; a beam movably coupled to the hull, wherein a first end of the beam is extendable over an edge of the hull while a second end of the beam is positioned on the hull; an extension member coupled to the second end of the beam, wherein the extension member increases the longitudinal length of the beam; and a passive hold-down member that is spaced apart from a support member to increase a maximum load that the beam supports without reducing a maximum reach of the beam from the edge of the hull, wherein the hold-down member is configured to apply a reactive force to the extension member in a direction toward the hull when the first end of the beam is extended over the edge of the hull and a second hold-down member positioned between the support member and the hold-down member that is coupled to the extension member, wherein the second hold-down member is configured to apply a force to the beam in a direction toward the hull when the first end of the beam is extended over the edge of the hull, and wherein the second hold-down member is coupled to the second end of the beam adjacent to a connection between the extension member and the second end of the beam.