Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1996-03-29
1998-04-28
Graysay, Tamara L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
405199, E02B 1702
Patent
active
057436770
ABSTRACT:
A pile gripper which uniformly engages a plurality of gripper teeth against a pile during engagement and uniformly retracts those same gripper teeth during disengagement is described. In one embodiment, the pile gripper is comprised of a an elastomeric bag, a plurality of segments arranged circumferentially on the pile-side of the gripper's structure, and a plurality of segment retraction elements. Each segment has a plurality of teeth which are used to "grip" an anchor pile. Segment teeth direction may alternate from segment to segment or segment group to segment group. Each segment group comprises a plurality of N segments, and each segment in a segment group is operatively coupled via grouping bars to the other segments in the segment group. The combination of uniform segment teeth movement during both engagement and disengagement provides significantly more load bearing capability for a specified gripper assembly length or, alternatively, a significantly shorter gripper assembly for a specified load bearing capability than prior art grippers.
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"Pile Gripper" brochure No. OSI 650, Oil States Industries, Arlington, Texas, 1994.
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Eldridge William J.
Phillips Darron J.
Spalding Larry V.
Graysay Tamara L.
Lagman Frederick L.
Oil States Industries Inc.
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