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Class Information
Number: 277/934
Name: Seal for a joint or juncture > Seal swells when wet
Description: Sealing means including means to absorb liquid to increase the volume of the sealing means.

Patents under this class:

Patent Number Title Of Patent Date Issued
8336618 Method and apparatus for isolating tubing with a swellable seal Dec. 25, 2012
8123226 Seal assembly Feb. 28, 2012
8118092 Swelling delay cover for a packer Feb. 21, 2012
7866408 Well tool including swellable material and integrated fluid for initiating swelling Jan. 11, 2011
7841409 Sand control screen assembly and method for use of same Nov. 30, 2010
7686308 Fluid-activated shaft seal Mar. 30, 2010
7597152 Swelling layer inflatable Oct. 6, 2009
7578354 Device and method to seal boreholes Aug. 25, 2009
7527099 System for sealing a space in a wellbore May. 5, 2009
7441596 Swelling element packer and installation method Oct. 28, 2008
7228915 Device and method to seal boreholes Jun. 12, 2007
6910692 Composite elastomeric seal for sealing fluid lines Jun. 28, 2005
6612585 Elastomeric strand-shaped sealing profile Sep. 2, 2003
6224058 Static sealing arrangement May. 1, 2001
5992858 Device used in sealing tie reinforcement holes Nov. 30, 1999
5971441 Rust-resistant sleeve for use in a branch hole of a water pipeline Oct. 26, 1999
5390939 Joint sealing member Feb. 21, 1995
5290045 Seal for joint, and method of installing same seal Mar. 1, 1994
5193960 Washer with elastic water-swellable rubber Mar. 16, 1993
5172919 Appliance for preventing water from leaking through joint Dec. 22, 1992
5096206 Pipe joint sealer Mar. 17, 1992
5072952 Sealing element Dec. 17, 1991
5049237 Layered silicates and water-resistant articles made therefrom Sep. 17, 1991
4758003 Method and apparatus for changing physical and chemical properties of materials Jul. 19, 1988
4728111 Compressed asbestos sheet gasket which swells in presence of liquids Mar. 1, 1988
4708351 Sealed joint including water-absorptive, water-swelling coating at joint interface site for using leakage to repair leaks Nov. 24, 1987
4558875 Aqueously-swelling water stopper and a process for stopping water thereby Dec. 17, 1985
4449713 Aqueously-swelling water stopper and a process of stopping water thereby May. 22, 1984
4443019 Aqueously-swelling water stopper and a process of stopping water thereby Apr. 17, 1984
4403779 Seals for liquid-tight closure between rotary component and partition Sep. 13, 1983
4095803 Keyway oil seal assembly Jun. 20, 1978
4069019 Seal structure for tank lid of spray corrosion tester Jan. 17, 1978

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