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Class Information
Number: 220/227
Name: Receptacles > Closures > Floating closure > With vent means
Description: Device wherein the closure means is provided with an opening for the escape of gas from the receptacle which it closes.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7374059 |
Covering systems and venting methods |
May. 20, 2008 |
| 7073530 |
Storage tank de-inventorying |
Jul. 11, 2006 |
| 6929142 |
Removable hatch cover for an internal floating roof manway |
Aug. 16, 2005 |
| 6465245 |
Processor device with fume extraction |
Oct. 15, 2002 |
| 6273287 |
Vacuum-relief valve for the floating roofs of tanks for storing liquids |
Aug. 14, 2001 |
| 5938062 |
Food dispensing package |
Aug. 17, 1999 |
| 5576937 |
Connector including a connector body, an annular air-tight material and a closure plate to seal an IC |
Nov. 19, 1996 |
| 5509562 |
Floating roof |
Apr. 23, 1996 |
| 5499735 |
Closure assembly for vacuum sealed containers |
Mar. 19, 1996 |
| 5339981 |
Paint can sealer |
Aug. 23, 1994 |
| 5213230 |
Paint can sealer |
May. 25, 1993 |
| 5212090 |
Cover structure for a fermentation container |
May. 18, 1993 |
| 5147418 |
Volatile liquid storage system |
Sep. 15, 1992 |
| 5005724 |
Floating cover for the interior of a storage tank |
Apr. 9, 1991 |
| 4907719 |
Container for collecting, preserving, and serving hot beverages |
Mar. 13, 1990 |
| 4732290 |
Load isolating gas well |
Mar. 22, 1988 |
| 4723682 |
Floating roof tanks for liquids, in particular to storage tanks used in the nuclear power industry |
Feb. 9, 1988 |
| 4723674 |
Leveled food preserver storage device container with floating lid |
Feb. 9, 1988 |
| 4710292 |
Digester tank with foam control cover |
Dec. 1, 1987 |
| 4705185 |
Floating roof tanks for liquid, in particular to storage tanks used in the nuclear power industry |
Nov. 10, 1987 |
| 4648968 |
Floating cover tank with guides for vertical displacement of the cover |
Mar. 10, 1987 |
| 4468975 |
Gauge well float for floating roof storage tanks |
Sep. 4, 1984 |
| 4457446 |
Vapor closure for flexures in floating |
Jul. 3, 1984 |
| 4438863 |
Gas venting floating cover |
Mar. 27, 1984 |
| 4413747 |
Floating lid for a liquid storage tank |
Nov. 8, 1983 |
| 4391705 |
Ballasting digestor covers |
Jul. 5, 1983 |
| 4378437 |
Digester apparatus |
Mar. 29, 1983 |
| 4199074 |
Enclosed seal for open top volatile liquid storage tanks |
Apr. 22, 1980 |
| 4189058 |
Floating thermally insulating tank covers |
Feb. 19, 1980 |
| 4067476 |
Automatic sealing device for containers of volatile or perishable liquids |
Jan. 10, 1978 |
| 3980199 |
Gas venting for floating cover |
Sep. 14, 1976 |
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