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Class Information
Number: 137/68.25
Name: Fluid handling > Destructible or deformable element controlled > Destructible element > Rupture disc > Direct pressure causes disc to burst > Dome shape
Description: Subject matter that is specifically designed to be hemispherical to enable the disc to more easily rupture as pressure builds.










Sub-classes under this class:

Class Number Class Name Patents
137/68.26 Reverse buckling 71


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8701625 Diesel engine, predetermined breaking component for diesel engine as well as method for avoiding damages to a diesel engine Apr. 22, 2014
8517041 Pressure relief device assemblies Aug. 27, 2013
7870865 Safety pressure relief device Jan. 18, 2011
7784482 Pressure relief device assemblies Aug. 31, 2010
7665486 Tear out test plug for plumbing installations Feb. 23, 2010
7308903 Pressure relief device Dec. 18, 2007
7226078 Inflator projectile Jun. 5, 2007
7204265 Bursting insert Apr. 17, 2007
7156257 Compressed gas cylinder Jan. 2, 2007
7140380 Cell safety valve and cell having same Nov. 28, 2006
7032925 Rupturable plate for inflator Apr. 25, 2006
7011104 Pressure relief device Mar. 14, 2006
7000630 Flame front diverter element Feb. 21, 2006
6959828 Non-fragmenting pressure relief apparatus Nov. 1, 2005
6792964 Pressure relief device assemblies Sep. 21, 2004
6672389 Bulged single-hinged scored rupture having a non-circular varying depth score line Jan. 6, 2004
6571816 Cell safety valve and method for manufacturing the same Jun. 3, 2003
6446653 Rupture disk assembly Sep. 10, 2002
6378544 Pressure relief device and method of using the same Apr. 30, 2002
6116260 Liquid material supplying apparatus and liquid material supplying method Sep. 12, 2000
6063198 High pressure release device for semiconductor fabricating equipment May. 16, 2000
6006938 Enhanced reverse buckling rupture disc Dec. 28, 1999
5615912 Inflator for air bag Apr. 1, 1997
5551470 Thermally responsive pressure relief apparatus Sep. 3, 1996
5435333 Thermally responsive pressure relief apparatus Jul. 25, 1995
5076312 Pressure relief device Dec. 31, 1991
5069291 Method and apparatus for suppressing explosions and fires and preventing reignition thereof Dec. 3, 1991
5050630 Self-positioning rupture disk assembly Sep. 24, 1991
5022424 Tension loaded composite rupture disk Jun. 11, 1991
4842004 Quick-release assembly for rupture disc insert type holder and the like Jun. 27, 1989
4830052 Diaphragm safety device with upstream active bursting knife May. 16, 1989
4809729 Pressure-relief device Mar. 7, 1989
4777974 Staged pressure relief assembly Oct. 18, 1988
4751938 Apparatus for supporting structure between bolted flanges Jun. 21, 1988
4750510 Temperature responsive pressure relief apparatus and method Jun. 14, 1988
4691729 Reverse-buckling rupture disk with replaceable disk and blade Sep. 8, 1987
4580589 Safety device with bursting knife and diaphragm for limiting the pressure of a fluid Apr. 8, 1986
4579001 Pressure relief valve with pressure indicating means Apr. 1, 1986
4562741 Pressure relief valve with pressure indicating means Jan. 7, 1986
4553559 Rupturable pressure relief assembly Nov. 19, 1985
4549565 Reclosing rupture disk assembly Oct. 29, 1985
4513874 Pressure relief device for internally pressurized fluid container Apr. 30, 1985
4505289 Rupture disc apparatus Mar. 19, 1985
4408194 Capacitive pressure relief rupture disc monitor Oct. 4, 1983
4404982 Rupturable pressure relief apparatus Sep. 20, 1983
4403626 Valve assembly Sep. 13, 1983
4345611 Safety valve means for battery Aug. 24, 1982
4316051 Partition insulator having a predetermined rupture behavior Feb. 16, 1982
4301938 Safety pressure relief device Nov. 24, 1981
4232698 Pressure relief valve with pressure indicating means Nov. 11, 1980

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