A container has a rectangular base and side walls inwardly extending from the base to provide a truncated tetrahedron shape with an open top. Handles are on opposing side walls to enable the carrying of the container.

A flush valve system is disclosed which sequentially fills and drains the water of the flush tank so as to eliminate wasted water. The flush valve system has a secondary, weighted float and a primary float which controls the water inlet valve that, in turn, controls the entry of water into the flush tank. The secondary float operates to prevent the entry of water into the flush tank until the water in the flush tank is substantially drained, and prevents overlapping operations of filling and dra...

A device for spherical ship's tanks (1), especially for liquid natural gas, comprising discharge pipes and filling pipes (3, 4 respectively) which extend vertically and centrally in the tank (1). The upper part of the pipes (3, 4) is attached to the tank and they extend down to the bottom (11) of the tank (1), being suspended in the tank, and the bottom part being passed slidably into respective muffs (15), which are permanently connected to the tank bottom (1). Between the pipes (3, 4) there ex...

A reserve tank is built into the vehicle, and communicates with a filler pipe. A sleeve extends into the reserve tank, the upper end of which defines the reserve capacity, and the other end of which is connected with the inlet of the fuel tank. The contents of the reserve tank can be transferred readily into the fuel tank via a bypass with a valve. An expansion tank with a volume of at least 10% of the tank volume, is likewise connected with the fuel tank via a pipe. An air vent connection of th...

In order to make possible, with a valve having a sleeve (110) provided with a valve seat (112) and with a valve activating tube (118) which supports a spring-biased valve body (114) which can be tipped away from the valve seat (112), a high water flow rate even under low water pressure, it is proposed, instead of a support of the valve body (114) on the valve seat (112) during valve opening, which inhibits water flow and causes wear, as is the case with a valve which closes with water pressure, ...

Liquid is caused to circulate in a shallow tank which has an operational depth less than half the effective maximum distance across the tank. One wall 17 defines with another wall a corner 18 and a bubble curtain 19 is provided along the wall 17 adjacent the corner 18 which imparts to the liquid in the tank an upward vertical component of movement which is asymmetrical along the wall 17, causing greater vertical movement of liquid at said corner than at the other end of the wall. Liquid rising u...

A tank for containing fluids, comprising at least two connected concentric toroid cells sharing a common axis, is provided. Each of the toroid cells encloses a hollow interior for holding the fluids. One or more surfaces separate adjacent toroid cells. Each of the surfaces appear in any cross section taken through the common axis as two equal line segments being positioned symmetrically about the common axis.

An impeller having blade members of arched configuration secured at their ends to a central support member such as an impeller shaft. Each blade member is twisted lengthwise through approximately 90 degrees to cause the blade members to produce a conical discharge flow. The blade members may be of unitary construction. A modified impeller blade has individually blade members mounted to a tubular support member. The impeller blade may be used in a multiple manner on a single support member.

A containment vault for storage tanks formed of substantially duplicate modules arranged in sets of four to encircle a received tank and provide an inwardly directed octagonal support rib assembly. The modules are clamped together to define each set and the sets in turn longitudinally aligned and clamped to define the length of the vault. The opposed ends of the vault are enclosed by bulkheads secured by the module clamping system.

Filling units for supplying small tanks or the like with gasoline, kerosene, or other flowable materials which attach to an inlet to such a tank. When the filling unit is in a fill position, a displacer section occupies a substantial volume within the tank. It allows the person filling the tank to supply the liquid until the tank will accept no more and the liquid reaches a predetermined level in a funnel portion of the filler. Thereafter, manipulation of the displacer section vertically within ...