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Class Information
Number: 405/12
Name: Hydraulic and earth engineering > Means to expose a normally wetted surface,e.g., cofferdam, etc. > Contoured to wetted surface, e.g., side hung ship caisson
Description: Method or apparatus wherein the enclosure means is provided with a specially configured face which coacts with an object having a complementary profile to effect a fluid tight seal therebetween.

Patents under this class:

Patent Number Title Of Patent Date Issued
6840189 Method and apparatus for enabling work to be carried out on a submerged portion of a vessel Jan. 11, 2005
6417476 Apparatus and methods for submerged processing of a grooved work surface using a movable gate Jul. 9, 2002
5823708 Device which provides an underwater dry workshop environment for ship propeller inspection and repair Oct. 20, 1998
5292206 Device for sealing a caisson in a watertight way Mar. 8, 1994
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
4696597 Equipment for carrying out work, under dry conditions, on an underwater structure Sep. 29, 1987
4658749 Autonomous station for cleaning the hulls of pleasure craft Apr. 21, 1987
4626128 Underwater gas pocket work unit and removal of dangerous fumes and gases therefrom Dec. 2, 1986
4615641 Barge repair device Oct. 7, 1986
4292914 Method and apparatus for facilitating underwater work on ship hulls and like objects Oct. 6, 1981
4175510 Cofferdam Nov. 27, 1979

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