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Class Information
Number: 405/198
Name: Hydraulic and earth engineering > Marine structure or fabrication thereof > With work deck vertically adjustable relative to floor > Longitudinally extending projections or recesses
Description: Method or apparatus wherein a plurality of regularly spaced protuberances, indentations, or apertures are arranged along the length of a columnar member and means are provided to co-operate with said protuberances, indentations, or apertures to effect raising or lowering of the platform.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8517637 Structure for the transport, installation and dismantling of an oil rig deck and method for using one such structure Aug. 27, 2013
8459901 Jacking system Jun. 11, 2013
8454272 Jack-up platform Jun. 4, 2013
8425155 Jacking system for a leg of a jack-up platform Apr. 23, 2013
8292548 Method and apparatus for improving the lateral support provided by the legs of a jack-up drilling rig Oct. 23, 2012
8113742 Jack-up platform Feb. 14, 2012
8092120 Method for assembling a rack portion of a self-raising oil rig Jan. 10, 2012
7934887 Complementary locking system for locking legs to the deck of an offshore drilling platform and methods for installing one such locking system May. 3, 2011
7850398 Jackup oil rig and similar platforms Dec. 14, 2010
7815398 Methods of positioning an elevating support vessel Oct. 19, 2010
7726910 Interactive leg guide for offshore self-elevating unit Jun. 1, 2010
7594781 Lift boat leg Sep. 29, 2009
7406767 Method for making a section of a support strut member of an offshore oil-drilling rig Aug. 5, 2008
7399142 Interactive leg guide for offshore self-elevating unit Jul. 15, 2008
7258510 Systems and methods useful in stabilizing platforms and vessels having platforms and legs Aug. 21, 2007
7186061 Self-regulating jacking system Mar. 6, 2007
7163355 Mobile wind-driven electric generating systems and methods Jan. 16, 2007
7147403 Self-elevating offshore structure Dec. 12, 2006
7011471 Jacking method and apparatus Mar. 14, 2006
6981822 Jack-up apparatus for marine-based platforms Jan. 3, 2006
6869252 Taut mooring system for jack-up type mobile offshore platforms Mar. 22, 2005
6705802 Temporary support for offshore drilling platform Mar. 16, 2004
6652194 Jack-up mobile offshore drilling units (MODUs) and jacking method and apparatus Nov. 25, 2003
6231269 Apparatus for releasing a rack chock of a jack-up rig May. 15, 2001
6076996 Offshore jackup hull-to-legs load transfer device and elevating and leg guide arrangement Jun. 20, 2000
6030149 Self positioning fixation system and method of using the same Feb. 29, 2000
5975806 Elevating unit for use with jack-up rig Nov. 2, 1999
5975805 Oil drilling rig system Nov. 2, 1999
5954453 Method of assembling sections of support legs of an oil platform Sep. 21, 1999
5921714 Device for releasing a screw jack mechanism Jul. 13, 1999
5915882 Jack-up platform locking apparatus and method Jun. 29, 1999
5906457 Offshore jackup elevating and leg guide arrangement and hull-to-legs load transfer device May. 25, 1999
5833396 Jack-up offshore drilling or production oil platform Nov. 10, 1998
5797703 Elevating unit for use with jack-up rig Aug. 25, 1998
5622452 Jack-up rig with improved rack chock assembly Apr. 22, 1997
5611645 Offshore jack-up rig locking system Mar. 18, 1997
5607259 Process for assembling long sections of booms of support legs of an oil platform Mar. 4, 1997
5580189 Jack-up rig crane Dec. 3, 1996
5486069 Offshore jack-up rig locking system Jan. 23, 1996
5248003 Apparatus and method for supporting the free end of a cantilever beam of a cantilevered jack-up rig Sep. 28, 1993
5224798 Overloading device for a jack-up oil platform and platform including the device Jul. 6, 1993
5188484 Jack-up type offshore oil and gas production platform and method Feb. 23, 1993
5139366 Offshore jackup rig locking apparatus and method Aug. 18, 1992
5102264 Device for the integrated suspension and manipulation of the legs of a jack-up platform Apr. 7, 1992
5092712 Inclined leg jack-up platform with flexible leg guides Mar. 3, 1992
4902169 Jack-up type platform including adjustable stop assembly Feb. 20, 1990
4880336 Suspension device for the support legs of a jack-up oil platform Nov. 14, 1989
4813814 Leg-holding device for offshore platform Mar. 21, 1989
4744698 Method and apparatus for installing marine silos May. 17, 1988
4740108 Method and apparatus for selecting and maintaining the level of a pier deck Apr. 26, 1988

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