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| Number | Title | Issue Date |
| 7748555 | Spring-loaded secondary seal for floating-roof storage tank A low-profile secondary seal for floating-roof storage tanks has a tip seal that is mounted on a series of segmental adapter plates connected to the shoe plates. A fabric extends between the tip seal and the floating roof. A spring presses the tip seal against the t... | 07/06/2010 |
| 7367567 | Low leakage finger seal A seal for an exhaust duct includes a metal mesh member sandwiched between an outer plate and an inner plate. The seal includes a plurality of flexible members defined by a plurality of slots in both the inner and outer plates. The flexible members provide for expan... | 05/06/2008 |
| 7124906 | Apparatus and method for protecting floating roof tanks from the effects of lightning strikes An apparatus and method for protecting a floating roof tank from the effects of a lightning strike are disclosed. In one aspect, the apparatus comprises an electrically conductive bonding strap in electrical communication with an inner tank wall and the floating roo... | 10/24/2006 |
| 7073530 | Storage tank de-inventorying A method for emptying a liquid storage tank that has a floating roof which becomes stationery a finite distance above the tank bottom, wherein, after the roof becomes stationery, liquid is continued to be withdrawn from inside the tank while vapor is removed from wi... | 07/11/2006 |
| 7044322 | Spring-loaded secondary seal for floating-roof storage tank A low-profile secondary seal for floating-roof storage tanks has a tip seal that includes a series of segmental adapter plates connected to the shoe plates. A tip seal element is mounted on the adapter plates. A fabric extends between the tip seal and the floating r... | 05/16/2006 |
| 7043049 | Apparatus and method for monitoring streamed multimedia quality using digital watermark A method to monitor the quality of distributed multimedia content over a network is disclosed. A digital watermark is embedded into the multimedia content. Various monitoring clients are disbursed over the network. The monitoring clients receive the multimedia conte... | 05/09/2006 |
| 6922956 | Floating cover A floating cover or roof having a plurality of floating panels or panels is provided. The floating cover disposed in a storage tank includes a frame having a plurality of openings, the floating panels mounted into the respective openings, an inspection port formed o... | 08/02/2005 |
| 6910427 | Security device and method to prevent unauthorized discharge of contents from a tank Security devices are provided to prevent or block unauthorized access through portholes formed in a protective housing assembly when the protective housing assembly is in its first, closed position and to allow access through the portholes when the protective housin... | 06/28/2005 |
| 6354488 | Secondary seal for floating roof storage tank A low profile secondary seal has a tube positioned above a primary seal that utilizes a shoe plate. The tube is connected to the floating roof. A tip seal adjacent the shell of the tank is connected to the shoe plate by a spacer. In use, the tube bears on... | 03/12/2002 |
| 6247607 | Low profile secondary seal A low profile secondary seal for sealing the space between the inner wall of a tank and a roof floating on a liquid product within the tank is of relatively simple, lightweight construction and of low profile so as to maximize the possible height of the f... | 06/19/2001 |
| 6164479 | Internal floating roof tank and peripheral seal A floating roof storage tank which includes a peripheral sealing ring of shoes distributed around the periphery of an internal floating roof within a storage tank. Spring loaded or otherwise resilient members with essentially level horizontal travel (with... | 12/26/2000 |
| 5927534 | Seal for floating roof of storage tank A seal for sealing the space between the inner wall of a tank and a roof floating on a liquid product within the tank includes a plurality of partially overlapping barrier plates mounted along a rim of the floating roof so as to extend outwardly along a f... | 07/27/1999 |
| 5829621 | Guide pole fitting seal for floating roof storage tanks A guide pole fitting seal for use on floating roof tanks that incorporates a well gasket, pole sleeve, pole wiper, float and float wiper that may be used with guide poles to control emissions from the guide pole fitting. The guide pole seal may permit the... | 11/03/1998 |
| 5667091 | Mounting system for floating roof seals A sealing system for a cylindrical liquid floating roof storage tank includes a primary seal and a secondary seal mounted on a rim extending upwardly from a floating roof. The system for mounting the seals to the floating roof includes a bolt, a retainer ... | 09/16/1997 |
| 5576937 | Connector including a connector body, an annular air-tight material and a closure plate to seal an IC A connector for protecting an IC comprising a connector body, a closed plate, and an annular air-tight sealing material. An air-tight chamber is formed centrally of the annular air-tight sealing material by compressing the annular air-tight sealing materi... | 11/19/1996 |
| 5560509 | Guide pole fitting seal for floating roof storage tanks A guide pole fitting seal for use on floating roof tanks that incorporates a well gasket, pole sleeve, pole wiper, float and float wiper that may be used with guide poles to control emissions from the guide pole fitting. The guide pole seal may permit the... | 10/01/1996 |
| 5529200 | Floating roof metallic shoe seal spring hanger system The present invention relates to a ring seal for between a floating roof and a side wall in a liquid and vapor storage tank. The ring seal includes a number of overlapping shoe plates hung from the floating roof by pantagraph hanger assemblies. The pantag... | 06/25/1996 |
| 5515989 | Tank shoe spring and double seal The space saving double seal uses a lower shoe, an upper shoe and a pair of vapor barriers joining them to a conventional outer rim plate on a floating roof. The secondary vapor barrier extends from the outer rim plate to the top of the upper shoe. A pair... | 05/14/1996 |
| 5372270 | Shoe seal for floating roof A shoe seal for effecting a vapor barrier between a lightweight internal floating roof and a tank wall of a tank includes a plurality of shoe sections; a plurality of hanger brackets connected to perimeter sections of the lightweight internal floating roo... | 12/13/1994 |
| 5351848 | Peripheral seal device for floating tank cover A device for sealing the rim space between a floating cover, movably disposed within a storage tank, and the inner wall of the storage tank. The device includes a peripheral sealing ring formed of a plurality of overlapped shoe segments, each segment havi... | 10/04/1994 |
| 5284269 | Space saving double seal The space saving double seal uses a lower shoe, an upper shoe and a pair of vapor barriers joining them to a conventional outer rim plate on a floating roof. The secondary vapor barrier extends from the outer rim plate to the top of the upper shoe. A pair... | 02/08/1994 |
| 5230436 | Liquid storage tank with floating roof structure A tank for storing liquids, particularly of the vaporized type. A floating roof on the tank includes a peripheral seal which slideably engages the tank inner wall to maintain a degree of sealing as the roof adjusts in response to variations in the liquid ... | 07/27/1993 |
| 5137167 | Sealing means for floating tank roof and method of installation A closure (38) for an annular clearance (36) between a floating tank roof (20) and a generally cylindrical tank (10) including the method of installation is provided. The closure (38) includes a plurality of arcuate shoes (40) mounted about the inner circ... | 08/11/1992 |
| 5103992 | Shoe seal for floating roof of storage tank, and method of installing same A shoe seal for sealing the space between a floating roof and the inner wall of an oil storage tank includes a plurality of scissors hanger assemblies for movably mounting a shoe on the floating roof. Each scissors hanger assembly includes an elongated pl... | 04/14/1992 |
| 5078293 | Shoe seal for lightweight floating roof A shoe seal for sealing the space between a pontoon supported lightweight floating roof and the inner wall of an oil storage tank includes a plurality of hanger assemblies for movably mounting a shoe on the floating roof. The hanger assemblies are mounted... | 01/07/1992 |
| 5036995 | Peripheral seal for floating tank cover A rim space sealing device comprising a peripheral sealing ring of over-lapped shoe segments attached to a floating cover within a storage tank. Spring loaded hanger-pushers and horizontal springs keep the peripheral sealing ring of shoe segments pressed ... | 08/06/1991 |
| 4811859 | Seal for floating roof A sealing system for a liquid storage tank having a pontoon roof or cover floating on the liquid product contained within the storage tank. A stepped metallic shoe is constructed to maintain contact with the inner wall of the liquid storage tank which, in... | 03/14/1989 |
| 4648968 | Floating cover tank with guides for vertical displacement of the cover A collecting and treating tank which holds liquid and in which a vertically movable cover floats on the liquid or on a gas layer above the liquid, comprising a tank having a vertical cylindrical circular wall, a bottom at and joined to the wall, and a cir... | 03/10/1987 |
| 4615458 | Floating roof tank with rim space seal A vertical cylindrical liquid storage tank having a circular floating roof therein and a seal from the roof to the tank wall for preventing escape of vapor from stored liquid. The seal has metal flexible sections, which can be laterally bent, extending fr... | 10/07/1986 |
| 4540104 | Device for sealing the floating roof of an oil tank A floating roof-type oil-tank sealing device wherein an inclined connector extends between an upper portion of a seal shoe and the lower portion of outer rim of a floating pontoon, and in such a state that each end of the inclined connector is pivotally s... | 09/10/1985 |
| 4524878 | Assembly for sealing an annular gap between the wall of a large vessel and a floating cover A sealing assembly for a large tank having a generally vertical tank wall and a movable floating cover for sealing an annular gap therebetween to include an annular sealing element adapted to be pressed against the tank wall in sliding sealing engagement ... | 06/25/1985 |
| 4493430 | Floating roof seal using a coil spring A resilient seal located in and spanning the vapor space between a tank wall and a floating roof wall with the seal including a vapor resistant flexible strip of material having parallel longitudinal edges attached to the roof defining a horizontal pouch ... | 01/15/1985 |
| 4457446 | Vapor closure for flexures in floating In a liquid storage tank having a floating roof with a circular rim, a substantially ring-like vertical cylindrical shoe adapted to slide along the inside wall surface of the tank outwardly from the roof rim, a primary flexible seal extending from the roo... | 07/03/1984 |
| 4456144 | Tank having a floating roof and seal In an arrangment for removal of precipitation from the vertical inner wall 1 of a tank having a floating roof, a water stripping element 2 is provided which interrupts the water film 6, running down the inner wall, absorbs the water and removes it at a su... | 06/26/1984 |
| 4437577 | Double secondary seal for floating roof tanks A double secondary seal for a floating roof type of liquid storage tank is disclosed. The secondary seal includes generally a weather shield of edge overlapping steel panels which extends upwardly and outwardly from the peripheral edge of the floating roo... | 03/20/1984 |
| 4397399 | Seal for floating roofs of storage tanks A sealing assembly comprising a flexible shield having one end rigidly connected to an upper rim portion of a floating roof movably disposed within a storage tank and having the opposite end thereof extending upwardly and outwardly toward the inner periph... | 08/09/1983 |
| 4371090 | Secondary seal for floating roof storage tank A floating roof storage tank having an upstanding tank shell for containing liquid to be stored and having therein a floating roof floating on the surface of the stored liquid, a primary seal interconnecting the floating roof and the tank shell, and an an... | 02/01/1983 |
| 4353477 | Floating roof metallic shoe secondary seal In a liquid storage tank having a floating roof, a plurality of shoes adapted to slidably contact the inner side wall of the tank, and means supported by the roof for pressing the shoes against the inner side wall, and a fabric vapor barrier extending fro... | 10/12/1982 |
| 4353478 | Vapor seal for floating roof tank In a storage tank for liquids, such as petroleum liquids and the like of the type having a generally upstanding cylindrical tank wall and disposed within the wall a generally circular roof therefor adapted to float upon the contents of the tank in vertica... | 10/12/1982 |
| 4341323 | Seal for floating roof tanks An improved bracket assembly for a floating roof tank comprises a primary seal element and an auxiliary seal element placed above the primary seal element. A spring-tensioned rolling element, such as a wheel, is placed above the auxiliary sealing element ... | 07/27/1982 |
