David T Seaman

US Patent:

6564740, May 20, 2003

Filed:

Sep 6, 2000

Appl. No.:

09/656436

Inventors:

Miles A. Hobdy - Houston TX
Stephen P. Lindblade - Waller TX
David M. Seaman - Hockley TX
Michael G. Shuhatovich - Houston TX

Assignee:

FMC Technologies, Inc. - Chicago IL

International Classification:

B63B 2100

US Classification:

11423012, 114293

Abstract:

A single hoisting mechanism is positioned on a turret of either an external or an internal turret mooring system for a FSO or FPSO vessel and is releasably securable to each of a plurality of anchor leg chains. The mechanism is mounted for angular rotation about the center-line of the turret in order that the hoist can be angularly aligned and selectively engaged with each of the anchor leg chains or riser/umbilicals spaced around the turret.

US Patent:

20120297890, Nov 29, 2012

Filed:

May 23, 2011

Appl. No.:

13/113653

Inventors:

QUOC ANH DANG - Houston TX, US
DAVID SEAMAN - Waller TX, US

International Classification:

G01N 3/08

US Classification:

73828

Abstract:

An arrangement for measuring tension in mooring chains connected to a floating structure . The arrangement includes a chain stopper having a first portion and a second portion . The first portion has a first load bearing surface and the second portion has a second load bearing surface . The arrangement further includes at least one pin arranged and designed for measuring shear loads and laterally traversing the chain stopper between the first and second load bearing surfaces , whereby, upon application of a load to the chainstopper assembly , the at least one pin is positioned in the load path.

US Patent:

20190144077, May 16, 2019

Filed:

Nov 15, 2017

Appl. No.:

15/813981

Inventors:

- Houston TX, US
Miles A. Hobdy - Richmond TX, US
William L. Fontenot - Houston TX, US
David M. Seaman - Waller TX, US
Patrick R. Thornberry - Katy TX, US

International Classification:

B63B 21/50

Abstract:

In a three row, roller bearing assembly coupling a vessel to a turret, the bearing assembly having a support row assembly disposed between an inner ring connected to the turret and outer rings connected to the vessel, a method and arrangement for in situ remediation of a damaged support row assembly. Couplers are secured to existing inner ring stud bolts. A continuous bearing ring below the couplers is assembled and a support bearing arrangement is installed between the couplers and the bearing ring. Reaction plates are mounted to the vessel. Each reaction plate has a jack screw which is positioned directly below the bearing ring. The jack screws are turned to elevate the bearing ring and form a flat surface for support of the support bearing arrangement. The turret axial load is transferred from the damaged support row assembly to the support bearing arrangement.

US Patent:

20160160836, Jun 9, 2016

Filed:

Dec 9, 2015

Appl. No.:

14/963930

Inventors:

- Houston TX, US
Ding Yu - Houston TX, US
Takuju Nakamura - Tokyo, JP
Hao Yu - Katy TX, US
Seth Tharpe - Houston TX, US
David Seaman - Waller TX, US

Assignee:

SOFEC, Inc. - Houston TX

International Classification:

F03D 1/00
B63B 22/04
E02D 27/52
E02D 27/42
E02D 27/50
E02B 17/02
E02D 27/10

Abstract:

Disclosed embodiments relate to systems and methods for mating a wind turbine off-shore to a spar buoy without the use of a crane barge. The system may include a spar buoy, wherein the spar buoy is secured to a foundation, and a wind turbine to be installed on the spar buoy. The system may also include a first truss affixed to the top of the spar buoy and a second truss affixed to the bottom of the wind turbine. The first truss may comprise either stabbings or receptacles configured for mating to the second truss and the second truss may comprise either receptacles or stabbings configured for mating to the first truss.