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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8177090 | Storage tank with floating roof emergency draining system and spherical rotor fume sealing valve A combination liquid petroleum storage tank and emergency drainage system for draining rain water accumulated on the floating roof of the storage tank, including a drain duct having an inlet adapted to receive rain water accumulated on the roof and extending downwar... | 05/15/2012 |
| 7963412 | Drainage apparatus for a sump of a floating roof tank An drainage apparatus for use with the sump of a floating roof tank has a first pipe pivotally connected at one end to an outlet of the sump, a second pipe pivotally connected at one end to an opposite end the first pipe and extending downwardly therefrom, and an ou... | 06/21/2011 |
| 7721903 | Overflow drainage system for floating roof storage tank A drain cover assembly for sealing a drain pipe that extends vertically from the top surface of the deck of a floating roof on a liquid storage tank includes a circular cover and at least two buoyant members, or pontoons, secured to the underside of the cover for im... | 05/25/2010 |
| 7374059 | Covering systems and venting methods A covering system that includes a first membrane, a first flotation member coupled to the first membrane. The first flotation member includes a first float and a first float compartment membrane, and the first float compartment membrane is coupled to the first membr... | 05/20/2008 |
| 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a finite distance above the tank bottom, wherein, after the roof becomes stationery, liquid is continued to be withdrawn from inside the tank while vapor is removed from wi...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 |
| 7065804 | Pool cover drain system The present invention generally relates to an assembly and related methods for draining water from atop a pool cover. The invention may be said to include a pool cover that has an aperture defined therein and a drain assembly attached to the pool cover and associate... | 06/27/2006 |
| 7048849 | First flush rainwater diverter and collection system A first flush rainwater diverter and collection system for use with rainwater storage tanks primarily in domestic situations. The system comprises primary (13) and secondary (14) storage chambers, a T-piece (10) for connection in a rainwater flo... | 05/23/2006 |
| 6978493 | Pool cover drain A pool cover drain substantially completely drains collected rainwater without use of pumps or electrical hookups. The pool cover drain is non-centrally located in a pool cover. It is attached to a flexible hose that directs the water to a swimming pool sidewall dra... | 12/27/2005 |
| 6957932 | Benthic screen for controlling aquatic plant growth A benthic screen for controlling aquatic plant growth comprising a sheet of flexible material, a plurality of spaced-apart, elongated retaining members that are transversely positioned across the width of the sheet and attachment means for securing each retaining me... | 10/25/2005 |
| 6634825 | Apparatus for joining cylindrical sections An apparatus for joining cylindrical sections, including a semi-cylindrical profile section or member adapted to be coupled to a cylindrical section on an outer circumferential portion of the profile section or member and including an outer circumferentia... | 10/21/2003 |
| 6497533 | Drainage system with membrane cover and method for covering wastewater reservoir A membrane cover is mounted at the surface of a wastewater reservoir. The membrane cover has a flexible buoyant impermeable membrane affixed to the perimeter walls of the reservoir and loosely laid over the wastewater level inside the reservoir. An array ... | 12/24/2002 |
| 6357964 | Drainage system with membrane cover and method for covering wastewater reservoir A membrane cover is mounted at the surface of a wastewater reservoir. The membrane cover has a flexible buoyant impermeable membrane affixed to the perimeter walls of the reservoir and loosely laid over the wastewater level inside the reservoir. An array ... | 03/19/2002 |
| 6234723 | Conveying capsule for a pneumatic tube conveyor system A conveying capsule for a pneumatic tube conveyor system is formed with a capsule body the open end face of which is closed with a lid. The lid is hinged on the capsule body about a transverse pin, and it has a lid closure on the side of its peripheral wa... | 05/22/2001 |
| 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 |
| 5758792 | Floating roof A deck drain for draining liquids from a floating roof of a liquid product storage tank includes a hollow drain tube extending downwardly from the deck of the floating roof at an upper open end thereof and a check valve assembly coupled to the upper open ... | 06/02/1998 |
| 5509562 | Floating roof A floating roof for use in a storage tank for oil or other liquid petrochemical products has a frame comprised of girders having grooved slots in top and opposite side surfaces thereof along substantially the entire lengths of the girders. The slots are c... | 04/23/1996 |
| 5381917 | Plastic safety cap The invention discloses a cap with a safety opening which comprises an inner element (10) with a thread suited to be screwed on the neck of a bottle (40), presenting on its outer cylindrical surface cogs (13) matching the corresponding cogs (31) which are... | 01/17/1995 |
| 5265651 | Foam reduction of vapor emissions from storage tanks Floating roof storage tanks are modified to include a foam surge tank, a low-pressure blower and a foam generator for generating vapor-suppressing foam during withdrawal of liquid from the storage tank and after the floating roof reaches its lowest elevat... | 11/30/1993 |
| 5108016 | Fuel container system A container system for holding and dispensing an oil-gasoline mixture uses a transparent container bearing indicia showing the quantity of liquid in the container, and an oil-measuring cup mounted to the fill cap so as to extend into the container when th... | 04/28/1992 |
| 5074427 | Apparatus for covering a basin for liquids An apparatus for covering a basin for liquids, for instance basins used for purification of waste water. The apparatus according to the invention comprises a covering element, with a regular circumferential shape, so that they can be located adjacent, whi... | 12/24/1991 |
| 4851275 | Covering used to protect water conditions of nursery pool from damage by acid rain and extraordinary temperatures This invention discloses a covering comprising a floating member shaped as a square loop, one pair of opposite portions of which are inflatable members, and a water-proof sheet having a nipple downwardly formed thereon, which is loosely stretched inside t... | 07/25/1989 |
| 4809734 | Condensate-collecting ceiling for elevated water tower facility A condensate-collecting ceiling for water tower facilities and the like is made up of a plurality of supporting members such as rods, tubes, pipes or the like which extend from a central locus or axis such as a tension ring or riser pipe to a periphal wal... | 03/07/1989 |
| 4790446 | Floating roof drain system A drain system for the floating roof of an oil tank or similar tank couples a drain sump at the underside of a central portion of the floating roof to the outside of the tank wall at a lower portion thereof via a flexible arrangement of rigid pipe lengths... | 12/13/1988 |
| 4723682 | Floating roof tanks for liquids, in particular to storage tanks used in the nuclear power industry The invention relates to floating roof tanks for liquids, of the type comprising a cylindrical wall (2), a floating roof (3), and a flexible membrane (4) connecting the periphery of the floating roof to the wall. In accordance with the invention, the tank... | 02/09/1988 |
| 4710292 | Digester tank with foam control cover The invention relates to apparatus for carrying out mixed liquid, gas and solid phase reactions and is intended for use in sewage digestion tanks where the removal of sludge and foam from the tanks is required. A reactor vessel is provided which includes ... | 12/01/1987 |
| 4705185 | Floating roof tanks for liquid, in particular to storage tanks used in the nuclear power industry The invention relates to floating roof tanks for liquids, of the type comprising a cylindrical wall (2), a floating roof (3), and a flexible membrane (4) connecting the periphery of the floating roof to the wall. In accordance with the invention, means ar... | 11/10/1987 |
| 4651887 | Spill catch pan Disclosed is a spill pan which is ideally suited for installation between the rails of a rail siding used for loading and unloading liquid chemicals and solvents. The spill catch pan is designed to catch any inadvertent liquids which are discharged during... | 03/24/1987 |
| 4603790 | Tensioned reservoir cover, rainwater run-off enhancement system A rainwater run-off enhancement system for flexible reservoir covers which have substantial portions which are horizontal and in two way tension forming large flat areas. Elongated weights are placed on the flat areas forming depressions which collect and... | 08/05/1986 |
| 4596266 | Safety valve and system for hydrocarbon storage tanks A safety valve and system is disclosed for hydrocarbon storage tanks having a floating roof construction and provision for drainage of water from the floating roof. The floating roof is constructed to collect water on top and discharge the same through a ... | 06/24/1986 |
| 4512883 | Skimmer for floating roof tanks The invention provides for a skimmer (10) interconnected to the floating roof (30) of a floating roof tank (300) wherein a mixture of at least two immiscible liquids, including a lowest specific gravity liquid (50) and at least one higher specific gravity... | 04/23/1985 |
| 4503988 | Gas collecting tensioned reservoir cover A flexible cover for placement upon the fluid surface of an open reservoir. A plurality of elongated weights form elongated sumps in the cover for the collection of surface water. All horizontal portions of the cover and the sump walls are in biaxial tens... | 03/12/1985 |
| 4476992 | Reservoir cover with tensioned plates A flexible cover for an open reservoir covering the entire reservoir characterized by tensioned plates formed over substantially the entire surface area, a central sump and interconnecting pre-programmed positioned sumps. Lines of segmented weights are po... | 10/16/1984 |
| 4456143 | Tamper resistant fitment for a container This invention provides a tamper-resistant fitment to convert a container which has a conventional cap or lid into a container which is tamper-resistant. The fitment has an outer rim member adapted to seat on the top edge of the container, an inner member... | 06/26/1984 |
| 4450855 | Removable condensate collector for elevated water storage facilities An improved removable condensate collector for elevated water storage facilities includes a membrane attached to the walls of such elevated water storage facility and positioned to prevent condensate from falling onto structures located at or near the bot... | 05/29/1984 |
| 4446983 | Reservoir cover having a defined peripheral sump A flexible impermeable cover for a reservoir which completely covers the fluid in the reservoir and facilitates the removal of surface rainwater to a defined peripheral sump immediately adjacent and completely surrounding a central floating cover portion.... | 05/08/1984 |
| 4438863 | Gas venting floating cover A gas venting floating cover for a liquid container, the cover including a continuous sheet of flexible material adapted to lie upon the liquid in the container in coextensive relationship therewith for attachment to the container sides in fluid tight rel... | 03/27/1984 |
| 4431536 | Skimmer for floating roof storage tanks The invention provides for a hydrocarbon skimmer (10) interconnected to the floating roof (30) of a floating roof storage tank (300) wherein a liquid mixture of sour water (40) and hydrocarbons (50) are stored. The hydrocarbon skimmer (10) of the present ... | 02/14/1984 |
| 4421136 | Flexible tubular conduit for transferring fluids particularly at high temperature and/or pressure and piping comprising such a conduit A drain pipe arrangement for draining water from a floating roof of a storage reservoir includes a flexible drain pipe connected to the roof, and a flexible heating element within the drain pipe. The flexible heating element takes the form of two rigid me... | 12/20/1983 |
| 4313457 | Removable condensate collector for elevated water storage facilities A removable condensate collector for elevated water storage facilities includes a membrane attached to the walls of such elevated water storage facility and positioned to prevent condensate from falling onto structures located at or near the bottom of the... | 02/02/1982 |
| 4248357 | Floating roof drain A drain for gravity removal of water from the deck of a floating roof in a tank. The drain comprises a flexible coiled hose having a lower outlet end in communication with a conduit inlet in a lower portion of the tank, and an upper inlet end in communica... | 02/03/1981 |
