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Class Information
Number: 220/89.3
Name: Receptacles > Container attachment or adjunct > Pressure relief means > Frangible pressure relief means > With cutting means
Description: Receptacle including an additional member having a knife edge or point intended to facilitate the bursting of the diaphragm.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7373944 |
Pyrotechnic relief valve |
May. 20, 2008 |
| 7308903 |
Pressure relief device |
Dec. 18, 2007 |
| 7095606 |
Electric switchgear with an enclosed design |
Aug. 22, 2006 |
| 7011104 |
Pressure relief device |
Mar. 14, 2006 |
| 6431383 |
Enhanced reverse buckling rupture disc |
Aug. 13, 2002 |
| 6367203 |
Rupture panel |
Apr. 9, 2002 |
| 6349737 |
Bursting disc assembly retaining ring with a clover leaf cutting pattern and projection |
Feb. 26, 2002 |
| 6220269 |
Bursting disc assembly retaining ring with a clover leaf cutting pattern and projection |
Apr. 24, 2001 |
| 6041506 |
Hole-forming device |
Mar. 28, 2000 |
| 5720380 |
Reverse buckling disk with incorporated knife |
Feb. 24, 1998 |
| 5284177 |
Non-reclosing pressure relief device for vacuum systems |
Feb. 8, 1994 |
| 5050630 |
Self-positioning rupture disk assembly |
Sep. 24, 1991 |
| 4989627 |
Thermal fuse valve |
Feb. 5, 1991 |
| 4697618 |
Container structure for dangerous material |
Oct. 6, 1987 |
| 4657157 |
Pressure relief method and rupture disk assembly |
Apr. 14, 1987 |
| 4580691 |
High flow pressure relief assembly |
Apr. 8, 1986 |
| 4557157 |
Vehicle steering differential |
Dec. 10, 1985 |
| 4463865 |
Knife blade apparatus for severing rupture disks |
Aug. 7, 1984 |
| 4394926 |
Reverse buckling rupture disk apparatus |
Jul. 26, 1983 |
| 4364487 |
Safety device against overpressures |
Dec. 21, 1982 |
| 4363418 |
Knife blade apparatus for severing rupture disks |
Dec. 14, 1982 |
| 4352437 |
Combined pressure relief and indicator mechanism |
Oct. 5, 1982 |
| 4301938 |
Safety pressure relief device |
Nov. 24, 1981 |
| 4278181 |
Safety pressure relief device |
Jul. 14, 1981 |
| 4236648 |
Safety pressure relief apparatus |
Dec. 2, 1980 |
| 4231484 |
Safety device for pressure vessels |
Nov. 4, 1980 |
| 4211334 |
Safety pressure relief apparatus |
Jul. 8, 1980 |
| 4158422 |
Safety pressure relief apparatus |
Jun. 19, 1979 |
| 4119236 |
Low pressure rupture device |
Oct. 10, 1978 |
| 4079854 |
Rupture disc pressure relief device |
Mar. 21, 1978 |
| 4046280 |
Direct mounting reverse buckling disc |
Sep. 6, 1977 |
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