A lid for a tank which is stably supported at various angles when open includes a tank or box, the lid, and at least one supporting component. The interior of the box contains components which are immersed in coolant for example, the lid allowing access thereto. The lid is rotatably connected to the box and covers or exposes the interior. The one or more supporting components are connected to the lid and the box. The lengths of the supporting components which stably support the lid at certain angles can be changed, which makes it convenient and risk-free for an operator to access the interior under the open lid. An immersion cooling system is also disclosed.

A bulk material transport system includes one or more bulk material transport bins, weighing platforms, and vehicles arranged in various combinations as bulk material transporters, assemblies, and units. The system is useful for coupling with a bulk material container, forming a reduced pressure region at an inlet of the transport bin, and dispensing bulk material into the transport bin through the reduced pressure region.

A hopper has a gate pivotable to open and close the lower opening of a hopper body, wherein opposing side parts more spaced apart than a width of the body are extending from the gate, and the opposing side parts of the gate are externally fitted pivotably to fulcrum shafts protruding from outer side surfaces of the hopper body. The hopper further includes regulating members interposed between the outer side surfaces of the body and the opposing side parts of the gate. The regulating members are configured to regulate movements of the gate in pivotal directions thereof and are detachably engaged with the fulcrum shafts circumferentially around the fulcrum shafts.

A tank assembly for a helicopter is provided. The tank assembly includes a retractable tank for storing liquid or other substances. The retractable tank includes an upper frame structure. The tank assembly further includes an attachment mechanism attached to the upper frame structure and configured to engage a main rotor transmission of the helicopter to suspend therefrom. A helicopter including a fuselage, a main rotor transmission, and a tank assembly is also provided.

A bearing assembly for a door linkage. The bearing assembly is placed about a shaft which runs through a central opening in an arm, and the arm rotates about the shaft. The bearing assembly comprises a central composition bushing, a boss which is rotationally locked with the arm, and a plate. The central opening is large enough such that all the elements of the bearing assembly can be removed without disassembling the arm. The plate retains the elements of the bearing assembly in place when the arm is in use. The plate may also provide torque transmission between the boss and the arm.

A relief valve has a closed position with a lid of the relief valve closing an opening of a storage tank and an open position with the lid pivoted away from the opening of the storage tank. A hand saver device for maintaining the relief valve in the open position includes a body comprising a U-shaped base plate having a central axis, a first end, a second end opposite the first end, a pair of lateral sides extending axially from the first end to the second end, and a recess extending axially from the first end. In addition, the hand saver device includes a pair of laterally spaced extension arms extending upwardly from the base plate. Each extension arm includes a throughbore extending laterally therethrough. Further, the hand saver device includes an elongate locking rod configured to be removably and slidably disposed in the throughbores of the extension arms.

A multifunctional storage counter includes a plurality of sides and a countertop positioned thereon to enclose a storage space on a floor upon which the storage counter rests, and where at least one of the plurality of sides is an openable side. The storage counter is configured to be moved along the floor to enclose a stationary item resting on the floor through the openable side and into the storage space.

A bearing assembly for a door linkage. The bearing assembly is placed about a shaft which runs through a central opening in an arm, and the arm rotates about the shaft. The bearing assembly comprises a central composition bushing, a boss which is rotationally locked with the arm, and a plate. The central opening is large enough such that all the elements of the bearing assembly can be removed without disassembling the arm. The plate retains the elements of the bearing assembly in place when the arm is in use. The plate may also provide torque transmission between the boss and the arm.

A liquid tank configured to receive and store liquids, namely waste cooking oil. A tank configured to receive and store used cooking oil which preferably greatly enhances the ease and reduces the work required to dispose of undesired liquid. A tank configured to receive and store used cooking oil which may be entirely manually powered, manually powered and free of all motors and electrical components, may be operated by a powered device, may include a motor, or may be operated manually with a powered assist.

An automated top door system is provided for selectively closing and opening a cargo container for top loading of cargo. The top door system includes: a door panel, a rotary actuator driven by a motor, and a coupling means connecting the door panel and the rotary actuator. The door panel is a self-supporting structural lightweight door panel, and the coupling means, which is a separate part or is part of said door panel, is configured to provide rotational movement of the door panel around a rotational axis of the rotary actuator, in response to the rotary movement provided by the rotary actuator, when in use. A top-loadable cargo container includes an automated top door system; and uses of the automated top door system in transport vehicles.