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Class Information
Number: 405/11
Name: Hydraulic and earth engineering > Means to expose a normally wetted surface,e.g., cofferdam, etc.
Description: Method or apparatus wherein means are provided to form a temporary removable enclosure about a portion of a submerged surface so that the water contained within the enclosure means can be evacuated to thereby expose the surface portion to the air.










Sub-classes under this class:

Class Number Class Name Patents
405/14 Connectable sections 15
405/12 Contoured to wetted surface, e.g., side hung ship caisson 12
405/13 Having transport, placement, or dislodgement means 9


Patents under this class:

Patent Number Title Of Patent Date Issued
8545129 Cofferdam modules Oct. 1, 2013
8235626 Adjustable system and method for carrying out work at an underwater structure Aug. 7, 2012
7421964 Floating structure in the shape of a concrete cofferdam and a method for moulding the concrete cofferdam Sep. 9, 2008
6652187 Portable cofferdam and method for stabilizing the structural integrity of box culvert bridges Nov. 25, 2003
5961250 Substance mixture for cofferdam material, cofferdam material, and the use and preparation thereof Oct. 5, 1999
5567076 Welding chamber Oct. 22, 1996
5382115 Apparatus intended to be buried in ground beneath water Jan. 17, 1995
4991996 Work enclosure for servicing marine structures Feb. 12, 1991
4872781 Open top floatable barge repair box with barge to box sealing system Oct. 10, 1989
4643617 Method of creating offshore seabed mound Feb. 17, 1987
4615641 Barge repair device Oct. 7, 1986
4522532 Bottom-seated portable cofferdam and method of use Jun. 11, 1985
4408405 Underwater excavator Oct. 11, 1983
4385582 Inflatable device to close a hull breach May. 31, 1983
4325656 Apparatus and method for forming off-shore ice island structure Apr. 20, 1982
4288176 Underwater air pocket work unit Sep. 8, 1981
RE29413 Method and apparatus for fabricating an off-shore structure Sep. 27, 1977











 
 
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