According to particular embodiments, a repositionable protective housing or manway cover assembly comprises a protective housing or manway cover, a hinge bracket, and a and a manway shell or nozzle. The protective housing or manway cover is coupled to the hinge bracket and the hinge bracket is repositionably coupled (e.g., via bolts, spring pins, clamps, etc.) to the manway shell or nozzle.

A receptacle is provided for holding a quantity of solid material. The receptacle includes a container having an open end, and a gate operably connected to the container so as to be rotatable to a closed position structured to prevent solid material from exiting the container through the open end. The gate includes a locking arm mounted thereon. A latching mechanism is operably connected to the container and includes a latch rotatable to a latched orientation structured to contact the locking arm to prevent the gate from being rotated out of the closed position. The locking arm is structured to move rearwardly and upwardly during rotation of the gate out of the closed position. The latch is structured so that contact between the latch and the locking arm when the latch is in the latched orientation prevents rearward and upward movement of the locking arm.

A tank assembly for a helicopter is provided. The tank assembly comprises a retractable tank for storing liquid or other substances. The retractable tank comprises an upper frame structure. The tank assembly further comprises 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 comprising a fuselage, a main rotor transmission, and a tank assembly is also provided.

A system for opening a lid of a bin comprises a guide channel plate comprising an elongated member, a first guide channel comprising a first slot formed within and along the length of the guide channel plate, and a second guide channel comprising a second slot formed within and along the length of the guide channel plate and parallel to the first guide channel slot. A block plate fits within the first and second guide channels and is secured by a block plate clamp. The block plate connects to a linear actuator that is secured to a support member of the bin. A slide block fits compressively within the first and second guide channels thus securing a flexible link assembly and wherein the slide block connects to the linear actuator. A connector plate allows connecting and disconnecting of the linear actuator.

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 fluid storage container has a top wall structure and a bottom wall structure held in spaced relation by a side wall structure. An internal baffle assembly is disposed in the fluid storage volume between the side wall structure for reducing fluid sloshing. A fill port formed in the top wall structure has a fill flange for coupling with a source of the fluid. A vent port formed in the top wall structure has a pressure vacuum value. A drain port formed in the side wall structure in a lower region adjacent the gutter region has a drain valve assembly is coupled to the drain port. A frame assembly includes an upper rectangular frame member and a lower rectangular frame member arranged in spaced relation by a plurality of post; wherein the frame assembly surrounds and supports the fluid storage vessel.

Various embodiments provide a bulk material shipping container top wall assembly, and a bulk material shipping container including the top wall assembly, that provides various advantages over previously known commercially available bulk shipping material container top wall assemblies and bulk shipping material containers.

Various embodiments provide a bulk material shipping container top wall assembly, and a bulk material shipping container including the top wall assembly, that provides various advantages over previously known commercially available bulk shipping material container top wall assemblies and bulk shipping material containers.

A valve system for a container or vat, such as a food cooking vat. The valve system includes a valve body and stem having a valve head with a sealing member. The valve body has an outlet configured to be in fluid communication with the vat, and the sealing member is in fluid communication with the outlet and the chamber and is selectively operable between a discharge position, allowing the vat's contents to drain from the chamber, and a closed position, allowing the contents to remain in the chamber. The sealing member preferably is comprised of polymer and has an O-type sealing ring interposed between a first portion and a second portion, where the diameter of the second portion is smaller than the diameter of the first portion. Embodiments may also include a snap-fit connection of the sealing member to the valve head.

Systems and methods are provided for safely and efficiently transporting granular material. In one embodiment, a container for granular material is provided. The container can have a top plate and a bottom plate that are coupled to one another via one or more high-strength fabric sleeves. The bottom plate can include a discharge valve for discharging the granular material in the container. The container can also include a discharge bladder that, when inflated, biases granular material within the container toward the discharge valve. The container can also include at least one barrier positioned proximate the discharge valve such that the barrier prevents at least a portion of the discharge bladder from entering the discharge valve. The barrier can allow sand or other granular material to pass through the barrier and exit through the discharge valve.