Abstract: A method of ballasting a cover of a sludge digester that is comprised of a storage tank and the cover. The method includes placing a ballast into the storage tank in a first predetermined position, placing the cover onto the storage tank, lowering a lifting member of a lifting device through an access port in the cover and into the storage tank, securing the lifting member to the ballast, using the lifting device to lift the lifting member and the ballast until the ballast is in a second predetermined position that is substantially above the first predetermined position, engaging a support bracket attached to the cover with a support member; and securing the ballast to the cover with the support member while the ballast is in a third predetermined position that is substantially below the second predetermined position.

Abstract: A liquid tank such as a liquid fuel tank, as well as a method of operating such a tank and a structure for implementation in such a tank, are disclosed. In at least one embodiment, the liquid tank is a liquid fuel tank that includes a housing have an inner chamber capable of containing liquid fuel as well as an air space above an upper surface of the liquid fuel, and a floating member included within the inner chamber, where the floating member is configured to float proximate the upper surface of the liquid fuel when the liquid fuel is present within the inner chamber. The floating member includes at least one tapered surface, and the floating member covers a majority of the upper surface of the liquid fuel, whereby the liquid fuel evaporates to a lesser degree than would occur if the floating member was absent.

Abstract: The present invention is a push and twist locking child-resistant cap and container. It includes a squeeze tube container having a neck and a dispensing orifice at an outer end of the neck, and the neck has one of a locking track and a locking lug. There is also a cap having at least three components and being assembled to move together as a single unit. This cap includes an outer shell having a sidewall and a top, the outer shell being adapted to receive and contain an inner top and an inner collar member; an inner top inserted into the outer shell, and; an inner collar member fixedly inserted into the outer shell below the inner top and having the other of the locking track and said locking lug.

Abstract: 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 product level in the tank to be measured and sampled from inside of the guide pole by removing the float during these operations.

Abstract: A reusable beverage container for hot or cold beverages is for use in vehicle beverage holders with receptacles sized for twelve ounce beverage cans. The container has a first lower portion of a diameter approximating or less than the diameters of standard twelve ounce beverage cans. A second upper portion is provided with a diameter larger than lower portion providing additional beverage capacity. A flange is formed between the upper and lower portions. One or more ribs substantially encircle the second upper portion. A handle is positioned sufficiently high on the upper portion so as not to interfere with the insertion of the lower base portion into the vehicle beverage holder.

Abstract: 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 product level in the tank to be measured and sampled from inside of the guide pole by removing the float during these operations.

Abstract: A water seal device for closing a tank containing a corrosive product, such as acid, closed by a cover having a side lip which is able to engage, on closing, in a U-shaped channel provided along the upper edge of the side wall. The channel is made up of monolithic shaped elements, each made from a natural rock of eruptive origin of the lava type, and arranged in sequence on the upper edge of the side wall. The invention applies particularly to installations for chemically pickling sheet metal.

Abstract: An apparatus is also described for reducing pollutant emissions into the surrounding air from storage of liquid materials in a tank having a cover which is movable in the vertical direction in the tank and moves along with the fill level of the liquid material being stored, wherewith an edge gap is present between the outer perimeter of the cover and the inner wall of the tank, which edge gap is filled with a sealing liquid which has a lower density than the liquid material being stored, and has a vapor pressure which is low in comparison to that of the liquid material being stored.

Abstract: A gas-holding sludge digester is disclosed having a sideskirt which telescopes in a liquid chamber which is separate from a main digester tank and wherein the ballast is structured to increase gas pressure of the gas contained within the cover as the sideskirt telescopes upward.

Abstract: A sludge digester having a main tank in conjunction with a gas-holding cover is disclosed. The cover includes a roof and a depending sideskirt which telescopes in relationship to the main tank. Positioned at the bottom edge of the sideskirt are a multitude of ballast members. A chamber, adapted to contain a quantity of liquid, is associated with the main tank. The sideskirt and the ballast members are submerged within the liquid contained within the chamber to form a gas tight seal of the cover with the main tank. The chamber also includes a system for maintaining a predetermined liquid level in the chamber dependent on the position of the ballast members in the chamber.

Abstract: The apparatus of the invention is applicable to gasholders and comprises a mercury seal, e.g. for a gas holder, which seal provides fluid-tight sealing in an annular space formed between a cylinder and a piston. The mercury is deposited in a reservoir which is inside the piston but which communicates with the annular space outside the piston. In the reservoir, the mercury is subjected to the inside pressure P of the cylinder, and it moves up inside the annular space when the difference between the inside and outside pressure P and Po increases, thereby forming an adaptive fluid seal.

Abstract: A sludge digester gas-holder is disclosed having a gas-holding cover with ballast members submergible in a liquid medium contained within a chamber circumscribing the upper portion of the tank wall and separate from the main tank cavity.

Abstract: Disclosed herein is a gas turbine system which is supplied with a low-pressure industrial by-product gas as a fuel and equipped coaxially with a gas compressor for compressing the fuel gas, the system providing a bypass pipeline for returning the gas in a high-pressure gas piping on the discharge side of the fuel gas compressor into a low-pressure gas piping on the inlet side of the compressor through a pressure reducing valve and a cooler, and an emergency gas pressure stabilizer having high responsive characteristics, the stabilizer being provided in the bypass pipeline on the outlet side of the cooler, whereby the high-pressure fuel gas on the discharge side of the fuel gas compressor can be returned safely into a low-pressure industrial by-product gas pipeline.

Abstract: 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 the square ring of the floating member and the peripheral edge of which is tightly connected with the same. The covering can float on the water and shield the water from scorching sunshine, killing frost, strong wind and acid rain. It is adaptable, therefore, to be used in nursery pool to protect the crops raised therein from damage by extraordinary weather.

Abstract: A method and apparatus for recovering viscous fluid such as asphalt, which utilizes an elongated insulated buoyant housing with an elongated heating element disposed therein. The heating element extends through the elongated housing and out at an open end thereof to heat the viscous fluid. A pump located at a second end of the elongated housing is utilized to draw the heated viscous fluid through the housing. The insulated nature of the housing concentrates the output of the heating element into the fluid within the housing and prevents heat loss.

Abstract: Heavy hydrocarbon oil having a pour point higher at least than the environmental temperature is loaded into a storage vessel in a state heated up to a temperature above its pour point and is cooled down to a temperature below the pour point to be stored in a solidified form in the vessel. In unloading the heavy hydrocarbon oil stored in the solidified form in the vessel, the upper portion of the oil in the vessel is heated up to a temperature above its pour point, and the successively fluidized oil portions are pumped out of the vessel.

Abstract: A liquefied gas storage tank having insulated vertical walls and an insulated top, said tank being located in and surrounded by a body of water with the exterior water level below the top of the tank walls, the tank interior space containing a layer of water in communication with the body of water so that water can be supplied to and be removed from the tank, an insulating layer floating on the water layer in the tank, and a liquefied gas floating on the insulating layer.The insulating layer can include a float which extends over the water layer except for a rim space between the periphery of the float and the tank walls, and an insulating liquid in the rim space which has a specific gravity less than water and higher than the liquefied gas, and with the insulating liquid being essentially immiscible with water and remaining liquid at the liquefied gas storage temperature.

Abstract: The present invention relates to a cabinet having two or more drawers, more specifically for safe-keeping of records such as papers, documents, file cards or the like, comprising at least one vertical, pivotally mounted locking bar of substantially uniform cross section and having two projecting portions, said locking bar being adapted to cooperate with parts of or on the drawers so that after pulling out one drawer it will lock and prevent the other drawer or drawers from being pulled out. The locking device of such a cabinet eliminates the risk of the cabinet turning over as a result of two or more heavily loaded drawers being pulled out simultaneously.

Abstract: An apparatus for separating solids from liquids by sedimentation includes a covered tank in which a sediment-engaging raking structure is journaled for rotation about a central support pier. The raking structure is driven by a unit which travels about the periphery of the tank outside the enclosure. A gas-tight seal is effected between the tank, the cover and the drive unit by the combination of an annular liquid-holding launder which is fixedly supported to surround the interior of the tank, a rigid U-shaped member which connects the drive unit to the raking structure with its lower portion submerged in the liquid held in the launder, and a continuous baffle-like wall extending from the tank cover downwardly into the space bounded by the submerged portion of the U-shaped member.